1
00:00:08,085 --> 00:00:10,287
Who enjoys being left
out of things? Not me.
2
00:00:10,287 --> 00:00:12,356
But the test subject
of our next myth
3
00:00:12,356 --> 00:00:14,057
happens to be a two-seater.
4
00:00:14,057 --> 00:00:15,326
So, we drew straws.
5
00:00:15,326 --> 00:00:18,061
And guess who gets to
scope out the next location?
6
00:00:18,061 --> 00:00:21,965
I'm gonna hit the road
and I'll catch y'all
on the flipside.
7
00:00:21,965 --> 00:00:22,933
Enjoy this one.
8
00:00:24,568 --> 00:00:25,769
This is like an artform.
9
00:00:28,071 --> 00:00:30,341
It's just like, making sure
the steel's lining up.
10
00:00:32,075 --> 00:00:34,611
Making sure
the form is perfect.
11
00:00:36,513 --> 00:00:38,549
Following the original top.
12
00:00:40,551 --> 00:00:42,919
It's more like sculpting
than it is fabricating.
13
00:00:47,524 --> 00:00:48,559
Oh, she's ready to drive.
14
00:00:48,559 --> 00:00:51,162
- We got a chop top.
- Yes we do, sir.
15
00:00:51,162 --> 00:00:53,264
Jim, look at how much
headspace we have in there.
16
00:00:57,033 --> 00:00:58,068
Meet the team.
17
00:00:59,703 --> 00:01:01,472
This might be the
miracle coolant
18
00:01:01,472 --> 00:01:03,240
that everybody's been
searching for.
19
00:01:03,240 --> 00:01:04,975
- Oh, no!
- Oh, jeez.
20
00:01:04,975 --> 00:01:06,843
With the
mechanical expertise...
21
00:01:06,843 --> 00:01:08,679
My main concern
is structural integrity.
22
00:01:08,679 --> 00:01:10,747
To test
all things automotive.
23
00:01:10,747 --> 00:01:12,683
- Oh!
- The engine died.
24
00:01:12,683 --> 00:01:14,185
The more air
we push through,
25
00:01:14,185 --> 00:01:15,452
the more fuel we siphon out.
26
00:01:15,452 --> 00:01:16,620
And boom!
27
00:01:17,521 --> 00:01:20,357
This is
Motor MythBusters.
28
00:01:20,357 --> 00:01:21,325
Hit it!
29
00:01:22,359 --> 00:01:23,427
Where science...
30
00:01:25,762 --> 00:01:27,198
...meets the streets.
31
00:01:43,714 --> 00:01:47,218
This car is insane!
Do you hear that engine?
32
00:01:49,520 --> 00:01:51,422
It just
wants to go fast.
33
00:01:53,724 --> 00:01:55,659
But it's not just
about the engine,
34
00:01:55,659 --> 00:01:59,630
it's also a lot to do
with the aerodynamics.
35
00:01:59,630 --> 00:02:02,132
Back in the old days,
the guys driving hot rods,
36
00:02:02,132 --> 00:02:04,868
they figured if they
chopped their cars
37
00:02:04,868 --> 00:02:06,036
and lowered the roof,
38
00:02:06,036 --> 00:02:08,472
that would give 'em
better aerodynamics.
39
00:02:08,472 --> 00:02:12,243
Therefore, allowing
their vehicles to go faster.
40
00:02:12,243 --> 00:02:14,245
Chopping the roof off
a stock vehicle
41
00:02:14,245 --> 00:02:18,148
is a topic often talked about
in hot rod forums.
42
00:02:18,148 --> 00:02:22,085
It's a technique
that was first pioneered
in the mid-1930s.
43
00:02:22,085 --> 00:02:24,421
Believe it or not,
from a standing start,
44
00:02:24,421 --> 00:02:28,259
some of these draggers
would beat a jet plane down
that quarter-mile stretch.
45
00:02:28,259 --> 00:02:30,126
But did lowering
a hot rod's roof
46
00:02:30,126 --> 00:02:31,528
really make it go faster?
47
00:02:33,464 --> 00:02:34,665
So that is the myth.
48
00:02:34,665 --> 00:02:36,633
If we chop our car,
49
00:02:36,633 --> 00:02:37,968
can we get more speed?
50
00:02:40,537 --> 00:02:42,839
In order to test this,
we need a vehicle.
51
00:02:44,174 --> 00:02:45,576
Oh!
52
00:02:45,576 --> 00:02:47,511
So, Tory,
I have the perfect vehicle.
53
00:02:47,511 --> 00:02:49,646
The most unaerodynamic
car we have.
54
00:02:49,646 --> 00:02:52,182
The worst vehicle we have
in the whole fleet
55
00:02:52,182 --> 00:02:54,285
-of vehicles on MythBusters?
56
00:02:54,285 --> 00:02:55,719
The Tradesman
is perfect.
57
00:02:56,953 --> 00:02:59,290
Brake pedal.
58
00:02:59,290 --> 00:03:01,658
This van was used
when we tested a movie scene
59
00:03:01,658 --> 00:03:03,093
about sabotaging brake lines.
60
00:03:04,060 --> 00:03:05,195
- Oh, that feels good.
- Yeah. All right.
61
00:03:05,195 --> 00:03:06,830
And returns beautifully.
62
00:03:06,830 --> 00:03:08,832
For that myth,
we moved the driver position
63
00:03:08,832 --> 00:03:11,201
and controls from the front
to the backseat.
64
00:03:12,102 --> 00:03:13,870
- Oh, my gosh!
65
00:03:16,773 --> 00:03:20,711
But this time
it's going to get an even more
radical makeover.
66
00:03:20,711 --> 00:03:22,313
All right.
So we're gonna chop this.
67
00:03:22,313 --> 00:03:24,881
- Yes. Well--
- But first, we need
to get some data.
68
00:03:24,881 --> 00:03:28,485
To see the top speed
of this big, crazy van.
69
00:03:29,320 --> 00:03:30,587
Yee-haw.
70
00:03:30,587 --> 00:03:32,188
All right.
Why don't we do
a control test?
71
00:03:32,188 --> 00:03:34,891
We'll get this to
the end of the runway,
I'll floor it.
72
00:03:34,891 --> 00:03:36,560
Oh! You're going
21 miles an hour.
Look at that.
73
00:03:36,560 --> 00:03:37,728
Oh, my gosh!
74
00:03:37,728 --> 00:03:40,196
So we're going to see
how fast we get up to
75
00:03:40,196 --> 00:03:41,765
in the quarter mile.
76
00:03:41,765 --> 00:03:45,802
Then we'll be able to
compare results before
and after we modify it.
77
00:03:47,604 --> 00:03:48,772
Are we sure
we're good?
78
00:03:48,772 --> 00:03:50,574
- Are there any more
airplanes coming?
- I don't,
79
00:03:50,574 --> 00:03:52,676
- I don't see anything.
- Are they not?
80
00:03:54,811 --> 00:03:57,213
Here we are
on an active airport
81
00:03:57,213 --> 00:04:01,151
and let's just say
that this runway
is quite active today.
82
00:04:02,152 --> 00:04:04,388
- This is exciting.
- You feel that adrenaline?
83
00:04:04,388 --> 00:04:05,722
- Oh, totally.
- Oh, yes.
84
00:04:05,722 --> 00:04:07,358
- Oh, it's there,
right?
- Yeah.
85
00:04:07,358 --> 00:04:09,360
And on the mark,
you go pedal to the metal.
86
00:04:09,360 --> 00:04:12,463
I'm gonna go
through the metal.
Pedal to the rust.
87
00:04:12,463 --> 00:04:15,699
- Might go through the floor.
88
00:04:15,699 --> 00:04:16,667
All right. Here we go.
89
00:04:16,667 --> 00:04:19,636
Three! Two! One! Go!
90
00:04:23,106 --> 00:04:25,241
- Twenty-seven, 30.
91
00:04:25,241 --> 00:04:27,878
- Look how long it's taking
to get up to speed.
- 40.
92
00:04:28,412 --> 00:04:29,245
Fifty.
93
00:04:31,415 --> 00:04:33,183
Fifty-nine. 60.
94
00:04:34,685 --> 00:04:37,421
Sixty-five. 67. 68.
95
00:04:39,623 --> 00:04:41,392
71 miles an hour.
96
00:04:41,392 --> 00:04:42,693
Whoo-hoo.
97
00:04:48,231 --> 00:04:50,133
The throttle's stuck. Bisi!
98
00:04:51,735 --> 00:04:52,636
Oh.
99
00:04:55,772 --> 00:04:57,941
- That was exciting.
- Throttle was stuck.
100
00:04:57,941 --> 00:05:01,111
- I kinda feel like a
near death experience.
- Oh, no! Stop!
101
00:05:02,646 --> 00:05:03,814
- Is your heart beating fast?
- No.
102
00:05:03,814 --> 00:05:05,416
- You're fine. You're fine.
- That was awesome.
103
00:05:05,416 --> 00:05:07,418
- It was cool.
- It was literally,
it literally was like,
104
00:05:07,418 --> 00:05:08,885
Oh, my God!
105
00:05:08,885 --> 00:05:11,522
When that throttle
stuck and the brakes
stopped working.
106
00:05:13,824 --> 00:05:16,026
It was like, "Oh, wow.
107
00:05:16,026 --> 00:05:18,161
The runway is almost finished.
108
00:05:18,161 --> 00:05:19,463
How are we gonna
stop this thing?"
109
00:05:19,463 --> 00:05:21,197
- Oh.
110
00:05:21,865 --> 00:05:23,534
Anyway, bottom line is,
111
00:05:23,534 --> 00:05:25,135
- we were hauling that--
- Yeah.
112
00:05:25,135 --> 00:05:26,537
- 71 miles an hour.
- Yes.
113
00:05:27,037 --> 00:05:28,304
Sixty-seven.
114
00:05:28,304 --> 00:05:29,239
Now with
two more runs...
115
00:05:29,906 --> 00:05:30,807
That's it.
116
00:05:31,207 --> 00:05:32,543
Whoo-hoo.
117
00:05:32,809 --> 00:05:34,144
Go.
118
00:05:34,144 --> 00:05:36,012
...we've got
all the data we need.
119
00:05:36,012 --> 00:05:37,614
Sixty-seven. 68.
120
00:05:37,614 --> 00:05:39,282
That's it. Quarter mile!
121
00:05:39,282 --> 00:05:41,452
All right.
122
00:05:41,452 --> 00:05:45,055
So, now that we know
our average top speed
of our unchopped van,
123
00:05:45,055 --> 00:05:48,825
before we actually chop it,
we should get more info
on its aerodynamics.
124
00:05:48,825 --> 00:05:52,062
Oh! I have the perfect
answer for that.
125
00:05:52,062 --> 00:05:54,197
- What?
- So in racing, I did a lot
of tuft testing.
126
00:05:54,197 --> 00:05:55,532
- Oh!
- I don't know if you know
what tufts are.
127
00:05:55,532 --> 00:05:58,535
- Tufts are when you put
little pieces of fabric...
- Yeah.
128
00:05:58,535 --> 00:06:00,070
- on the outside
of the vehicle.
- Yeah!
129
00:06:00,070 --> 00:06:02,873
I love using yarn,
especially one that contrasts
the body of the car.
130
00:06:02,873 --> 00:06:04,741
- Yeah.
- Color-wise,
that'll be perfect!
131
00:06:04,741 --> 00:06:07,143
And it's funny,
'cause it seems
a little archaic,
132
00:06:07,143 --> 00:06:10,280
but they still use it
in modern-day racing.
133
00:06:10,280 --> 00:06:12,549
Anyone who is serious
about aerodynamics,
134
00:06:12,549 --> 00:06:15,519
- still today respects
that particular procedure.
- I love it.
135
00:06:21,492 --> 00:06:24,495
Now we'll use
these pink tufts,
136
00:06:24,495 --> 00:06:28,131
as a weight, see what type of
turbulence we see on the van.
137
00:06:28,131 --> 00:06:30,501
I know it looks like we're
decorating a Christmas tree,
138
00:06:30,501 --> 00:06:34,571
but this is actually
very important
science business.
139
00:06:34,571 --> 00:06:37,340
Pink is good because
it really stands off
very nicely
140
00:06:37,340 --> 00:06:39,409
and as we film
it allows the opportunity
141
00:06:39,409 --> 00:06:41,111
to see how we can improve
142
00:06:41,111 --> 00:06:43,079
on the aerodynamics
of the van.
143
00:06:43,079 --> 00:06:44,981
I think
a huge problem
you're gonna see is just,
144
00:06:44,981 --> 00:06:48,418
- right now, this is just
such a big, flat surface.
- Yes.
145
00:06:48,418 --> 00:06:50,286
Up to the top, you know,
up to the windshield,
146
00:06:50,286 --> 00:06:52,956
you know, that means,
this a wall
pushing through wind.
147
00:06:52,956 --> 00:06:54,591
I think, we're gonna see
a lot of problems.
148
00:06:54,591 --> 00:06:57,694
What I'd be very curious
about as well is,
what happens in this region,
149
00:06:57,694 --> 00:06:59,362
- so if you put tufts here...
- Oh, yeah.
150
00:06:59,362 --> 00:07:01,331
- you see things
standing right up?
- 100%,
151
00:07:01,331 --> 00:07:03,399
- we definitely
do the roof as well.
- Yeah.
152
00:07:03,399 --> 00:07:06,837
And if we see
any movement that goes
upwards or downwards,
153
00:07:06,837 --> 00:07:10,541
we know we have turbulence
and we need to modify
the van accordingly.
154
00:07:17,213 --> 00:07:18,882
All right.
We're all tufted up.
155
00:07:18,882 --> 00:07:21,451
- Yeah.
- We're going to see how
aerodynamic this thing is.
156
00:07:21,451 --> 00:07:23,253
This van is looking
pretty tuffed.
157
00:07:25,121 --> 00:07:26,056
Here we go.
158
00:07:27,891 --> 00:07:30,126
Tracking with us
is a car with
a high speed camera.
159
00:07:30,126 --> 00:07:32,395
Filming at 5000 frames
per second.
160
00:07:33,630 --> 00:07:36,299
To get an adequate amount
of airflow over the van,
161
00:07:36,299 --> 00:07:40,070
we need to get it up
to around 25 miles an hour.
162
00:07:40,070 --> 00:07:42,739
- We're getting a lot
of turbulence on the top.
- Okay.
163
00:07:42,739 --> 00:07:44,608
- Tremendous amount
of turbulence.
- Yeah.
164
00:07:44,608 --> 00:07:47,143
As in the eddies
are forming
on the top there,
165
00:07:47,143 --> 00:07:49,079
the string will just
pull them right up.
166
00:07:49,079 --> 00:07:50,581
- Flipping around.
- Yeah.
167
00:07:50,581 --> 00:07:53,584
And then we've got a really
good wind flow just
on the windshield
168
00:07:53,584 --> 00:07:55,018
but I mean, that makes sense,
169
00:07:55,018 --> 00:07:56,987
- that's where most of the wind
is getting pushed.
- Of course.
170
00:07:56,987 --> 00:07:59,956
Everywhere around
the flat windshield,
171
00:07:59,956 --> 00:08:02,025
- we're getting
all kind of turbulence.
- Absolutely.
172
00:08:03,059 --> 00:08:04,294
It's going
to be interesting
173
00:08:04,294 --> 00:08:06,663
to see what the high-speed
camera is picking up.
174
00:08:07,831 --> 00:08:09,666
We're limited
to what we can see here.
175
00:08:09,666 --> 00:08:12,368
It's so critical for us to
take a look at the film...
176
00:08:12,368 --> 00:08:15,105
- Yeah.
- And see what our tufts
are doing around the vehicle.
177
00:08:19,710 --> 00:08:21,311
All right. Before we start,
178
00:08:21,311 --> 00:08:23,479
- we're gonna look at our
modern-day vehicles.
- All right.
179
00:08:23,479 --> 00:08:26,617
Just to see what
an aerodynamic car
should look like.
180
00:08:27,517 --> 00:08:29,620
What's interesting is,
as you see
181
00:08:29,620 --> 00:08:31,321
it's flat across all around.
182
00:08:31,321 --> 00:08:33,857
-We don't have any eddies
or vortices forming,
-Right.
183
00:08:33,857 --> 00:08:35,726
- which is pretty nice.
- And we're definitely seeing
184
00:08:35,726 --> 00:08:38,094
a little bit of turbulence
in the back here,
185
00:08:38,094 --> 00:08:40,196
- which you expect.
- To be expected.
186
00:08:40,196 --> 00:08:44,768
But, I mean, this is what
a aerodynamically-designed
vehicle would look like.
187
00:08:44,768 --> 00:08:48,204
This is good though.
Because now we're seeing
how the tufts should behave.
188
00:08:48,204 --> 00:08:49,773
Yes. We have a frame
of reference.
189
00:08:49,773 --> 00:08:51,875
- Yeah and then I can't wait
to see how our van looks like.
190
00:08:52,809 --> 00:08:55,345
- Okay.
- Okay, here's our van.
191
00:08:55,345 --> 00:08:57,881
And... Look at
the top of the roof,
there's nothing hugging.
192
00:08:57,881 --> 00:09:00,050
Things are actually...
The tufts
actually move upwards.
193
00:09:00,050 --> 00:09:02,786
Yeah.
They're just
flapping all over.
194
00:09:02,786 --> 00:09:05,288
- They're like...
- Yeah, they're partying...
195
00:09:05,288 --> 00:09:06,790
-And we weren't invited.
196
00:09:06,790 --> 00:09:09,492
It's almost like,
a flat wall.
197
00:09:11,061 --> 00:09:12,295
You know what this points to?
198
00:09:12,328 --> 00:09:15,531
Once we chop this roof,
we're gonna
gain significantly.
199
00:09:15,531 --> 00:09:16,833
Imagine getting
rid of all of this.
200
00:09:16,833 --> 00:09:18,702
- Yeah.
- The advantages
we could experience.
201
00:09:18,702 --> 00:09:22,505
-Yeah. 'Cause it will
just be a big wedge.
-Oh!
202
00:09:22,505 --> 00:09:27,310
You know what would be cool,
is if we could actually build
- a 3
- D model of the van.
203
00:09:27,310 --> 00:09:30,714
Then we could play with the
shape of it and see if we can
make it more aerodynamic.
204
00:09:30,714 --> 00:09:32,048
Wow. That's pretty
cost-effective
205
00:09:32,048 --> 00:09:33,283
and to do that properly,
206
00:09:33,283 --> 00:09:35,385
we need to digitally
scan the car.
207
00:09:35,385 --> 00:09:39,455
And then, in software,
model anything we desire.
208
00:09:39,455 --> 00:09:41,024
- Yeah.
- And test accordingly.
209
00:09:41,024 --> 00:09:42,558
- I like where that's going.
- Yup.
210
00:09:42,558 --> 00:09:45,696
I know the perfect person
to call for
this particular exercise.
211
00:09:45,696 --> 00:09:46,496
- Awesome.
- Yeah.
212
00:09:55,071 --> 00:09:59,075
In the olden days,
hot rodders had to physically
cut the roof of their cars,
213
00:09:59,075 --> 00:10:01,812
without even knowing
if the results
will be positive or not.
214
00:10:01,812 --> 00:10:06,382
Nowadays we have access
to modern technology,
we can digitize our vehicles,
215
00:10:06,382 --> 00:10:12,388
model them in CAD software,
3D print them
and do a small-scale test.
216
00:10:12,388 --> 00:10:14,858
Now, that's exactly what
we're gonna do with our van.
217
00:10:14,858 --> 00:10:17,861
To do that today, we have
Martin Horton,
from blupointscan
218
00:10:17,861 --> 00:10:20,931
and he's going to scan
the entire vehicle and allow
us to model properly.
219
00:10:22,065 --> 00:10:23,333
These are scanning targets.
220
00:10:23,333 --> 00:10:25,435
They're a five-millimeter
diameter target
221
00:10:25,435 --> 00:10:29,740
and the scanner picks up
the center of each one
of these targets
222
00:10:29,740 --> 00:10:32,042
and assigns an XYZ coordinate
to it.
223
00:10:32,042 --> 00:10:34,911
And from that, it develops
what that surface looks like.
224
00:10:34,911 --> 00:10:36,046
- Very nice.
- Yeah.
225
00:10:36,046 --> 00:10:38,849
- I'd love to see a test scan.
- Okay, let's try one.
226
00:10:38,849 --> 00:10:42,118
So, what we can do here
is set up the scanner
so that
227
00:10:42,118 --> 00:10:45,255
I have all of these targets
that are gonna be captured
228
00:10:45,255 --> 00:10:46,522
in the scan,
229
00:10:46,522 --> 00:10:48,859
and I'm gonna capture
a surface.
230
00:10:48,859 --> 00:10:52,362
- And there's my surface.
- Very nice.
231
00:10:52,362 --> 00:10:56,399
So, what would happen if I
put my head into the photo
when you take a scan?
232
00:10:56,399 --> 00:10:59,135
- Well, your head would get
captured in the scan.
- Oh, okay.
233
00:10:59,836 --> 00:11:01,304
- 'Kay?
- Okay.
234
00:11:04,240 --> 00:11:06,609
Hey, we got it! Check it out.
235
00:11:06,609 --> 00:11:09,512
Oh, my goodness,
that's crazy!
236
00:11:09,512 --> 00:11:11,181
It captured me properly.
237
00:11:11,181 --> 00:11:13,483
- Yeah. Yeah.
- Oh, my goodness,
with good detail too.
238
00:11:13,483 --> 00:11:14,818
- Oh, yeah!
- Oh, wow!
239
00:11:16,519 --> 00:11:18,789
How long will it take
to scan this entire vehicle?
240
00:11:18,789 --> 00:11:20,256
Probably about four hours.
241
00:11:21,357 --> 00:11:22,826
I'm gonna scan the side,
242
00:11:23,359 --> 00:11:24,260
the front,
243
00:11:25,095 --> 00:11:26,963
the roof and then the rear.
244
00:11:26,963 --> 00:11:28,999
-And stitch
all of these together.
-Wow.
245
00:11:31,501 --> 00:11:34,204
Well, Bisi, I have taken
the model of the van
that we scanned
246
00:11:34,204 --> 00:11:37,540
and so now we can modify
this van in any way we want
with the computer.
247
00:11:37,540 --> 00:11:38,574
That is really good.
248
00:11:38,574 --> 00:11:40,310
So, in this myth,
we want to see
249
00:11:40,310 --> 00:11:44,080
if chopping the roof would
help us get
any aerodynamic advantage.
250
00:11:44,080 --> 00:11:46,850
So, I'm thinking about, yes,
doing something standard
251
00:11:46,850 --> 00:11:47,951
and...
252
00:11:47,951 --> 00:11:50,186
old school, just to see,
and it may look pretty cool,
253
00:11:50,186 --> 00:11:54,090
we chop the front
and then have that section
taper upwards
254
00:11:54,090 --> 00:11:55,892
- towards the factory rear.
- Oh, okay.
255
00:11:55,892 --> 00:11:58,829
So, you're thinking of taking
a chunk out of the A pillar,
maybe a little bit of B pillar
256
00:11:58,829 --> 00:12:01,131
- and leaving the back
of the van the same?
- Yes, absolutely.
257
00:12:01,131 --> 00:12:02,632
So, let's see.
258
00:12:02,632 --> 00:12:05,501
How much roughly would you say
are we taking out of this,
on the real van?
259
00:12:05,501 --> 00:12:08,238
So, you know, I kind
of still want to be able
to see out the van.
260
00:12:08,238 --> 00:12:09,272
That's a good idea.
261
00:12:09,272 --> 00:12:10,841
So maybe,10 inches.
262
00:12:10,841 --> 00:12:14,510
10 inches or so?
Let's see, we have a bit
of a slant chop here.
263
00:12:14,510 --> 00:12:17,280
- Oh, that's perfect.
- Yeah, there we go.
264
00:12:17,280 --> 00:12:20,083
- So, that's from
the other side.
- Mm-hmm.
265
00:12:20,083 --> 00:12:22,652
We can look at it.
Perfect.
That's roughly 10 inches.
266
00:12:22,652 --> 00:12:26,289
Nice.
But I still want to explore
the traditional full chop.
267
00:12:26,289 --> 00:12:28,591
- Yeah--
- So, 10 inches all across.
268
00:12:28,591 --> 00:12:32,362
Yeah, same idea.
Taking roughly 10 inches
out of the front A pillar.
269
00:12:32,362 --> 00:12:34,865
But now we're extending that
all the way to the back.
270
00:12:34,865 --> 00:12:37,267
So we've got 10 inches,
10 inches and 10 inches here.
271
00:12:37,267 --> 00:12:39,102
- Beautiful.
- Is that about what
you were thinking?
272
00:12:39,102 --> 00:12:40,136
- That's perfect.
- Right on.
273
00:12:40,136 --> 00:12:43,874
- Looks pretty cool.
And strange.
- Yeah.
274
00:12:43,874 --> 00:12:47,643
Now that we have
our models iterations done,
- we're gonna 3
- D print them
275
00:12:47,643 --> 00:12:50,881
and compare them
against each other
in a small-scale test.
276
00:12:55,151 --> 00:12:59,555
All right, so now it's time
to pick what type of chop
we're gonna do on this van.
277
00:12:59,555 --> 00:13:02,893
- So, we have our 3
- D-printed
van models.
278
00:13:02,893 --> 00:13:06,262
We have the regular shape,
then we have our slanted shape
279
00:13:06,262 --> 00:13:08,965
and then we just have
the straight chop shape.
280
00:13:08,965 --> 00:13:10,934
We have created our own
little wind tunnel.
281
00:13:10,934 --> 00:13:12,969
We're gonna put each
of those shapes in
282
00:13:12,969 --> 00:13:17,073
so that way we can decide
which version is the most
aerodynamic.
283
00:13:18,241 --> 00:13:21,912
This is my smoke leak
detector.
284
00:13:21,912 --> 00:13:24,247
I use it for turbo charge
applications
285
00:13:24,247 --> 00:13:26,249
to see if the systems have
any leaks.
286
00:13:26,249 --> 00:13:28,718
Oh, I see some smoke
right here.
287
00:13:28,718 --> 00:13:30,753
So we need to fix that.
288
00:13:30,753 --> 00:13:34,490
But it's the perfect device
to create smoke for our
miniature wind tunnel.
289
00:13:35,091 --> 00:13:36,326
What is it?
290
00:13:36,326 --> 00:13:39,629
- It is vape juice.
- Is that really
vape juice?
291
00:13:39,629 --> 00:13:41,664
It is.
Without the nicotine.
292
00:13:41,664 --> 00:13:45,001
Don't stick you head
in the end of the box.
293
00:13:45,001 --> 00:13:46,469
Yeah, that looks great.
294
00:13:48,038 --> 00:13:49,940
Our home-made wind tunnel
is done.
295
00:13:49,940 --> 00:13:51,841
We have our plexiglass shape,
296
00:13:51,841 --> 00:13:55,145
we have our fans
that are blowing air
into the tunnel.
297
00:13:55,145 --> 00:13:57,013
Then it's going through
a bunch of straws.
298
00:13:57,013 --> 00:14:01,084
Now the straws are going
to keep that air moving
in one direction,
299
00:14:01,084 --> 00:14:03,653
which we need, so
we could see our line
of smoke.
300
00:14:03,653 --> 00:14:05,956
And then we have a fan
at the other end
of our chamber,
301
00:14:05,956 --> 00:14:07,991
that's actually pulling
the air out.
302
00:14:07,991 --> 00:14:10,560
So, that way we get a nice,
even flow of air
303
00:14:10,560 --> 00:14:13,496
so when we send our smoke
through the tunnel,
304
00:14:13,496 --> 00:14:17,200
we can see which van shape
is most aerodynamic.
305
00:14:17,200 --> 00:14:19,502
- This is our base model,
we're looking at...
- Yeah.
306
00:14:19,502 --> 00:14:23,573
In terms of the factory then
and how it looks
in its originality.
307
00:14:23,573 --> 00:14:28,011
And what we're gonna look for
is that flow around
the entire van,
308
00:14:28,011 --> 00:14:31,281
- better that we can see,
while sitting inside the van.
- Yeah.
309
00:14:31,281 --> 00:14:33,549
I feel like a mad scientist.
All right.
310
00:14:33,549 --> 00:14:35,851
- You ready?
- Yes, so here we go.
311
00:14:35,851 --> 00:14:38,989
- Okay. So, Tory, you see
that upward stream?
- Yeah.
312
00:14:38,989 --> 00:14:44,027
It hits around the wind shield
and it has a large disruption
just like we saw in the video.
313
00:14:44,027 --> 00:14:45,895
- Very similar.
- You know what else
is happening?
314
00:14:45,895 --> 00:14:48,231
Look back here,
at the back of the van.
315
00:14:48,231 --> 00:14:50,200
See, there's like a vortex
being created?
316
00:14:50,200 --> 00:14:52,135
Yes, we have a lot of eddies
forming back there.
317
00:14:52,135 --> 00:14:53,869
- That's not good.
- Which is to be expected.
318
00:14:53,869 --> 00:14:56,139
So, now, we are going to do
another test.
319
00:14:58,241 --> 00:15:02,512
So, this is the van now,
that has the flat top,
no rake whatsoever.
320
00:15:02,512 --> 00:15:04,814
- Standard chop.
- Here we go.
321
00:15:04,814 --> 00:15:08,451
Okay, Tory,
this is painfully obvious.
Look what's happening.
322
00:15:08,451 --> 00:15:11,621
- Look at that.
- That is beautiful!
That's exactly what we want.
323
00:15:11,621 --> 00:15:15,858
And we decreased
the wind drag at the back
of the van, tremendously.
324
00:15:15,858 --> 00:15:18,194
It's obvious,
this is a much more
aerodynamic design.
325
00:15:18,194 --> 00:15:19,229
Yeah.
326
00:15:19,229 --> 00:15:21,631
You see how that upper current
flows so nicely
327
00:15:21,631 --> 00:15:23,733
and doesn't have
that disruption
the initial one had?
328
00:15:23,733 --> 00:15:25,335
- Yeah.
- That's very promising.
329
00:15:25,335 --> 00:15:27,837
- And if you look at the smoke,
it's just rolling off...
- Absolutely.
330
00:15:27,837 --> 00:15:30,540
The back
of the vehicle,
where before,
331
00:15:30,540 --> 00:15:34,044
we saw a huge amount
of turbulence
right at the back of the van.
332
00:15:34,044 --> 00:15:36,079
So you're telling me,
those old hot rodders
were onto something?
333
00:15:36,079 --> 00:15:37,880
- I think so.
- Oh, my goodness.
334
00:15:37,880 --> 00:15:40,916
- Okay.
- All right, the last design
335
00:15:40,916 --> 00:15:43,519
we're gonna go for,
is the slanted roof.
336
00:15:43,519 --> 00:15:46,222
- I'm not too
excited about this one.
- No.
337
00:15:46,222 --> 00:15:47,590
Only because,
338
00:15:47,590 --> 00:15:50,760
I mean, just looking
at this shape, and how
air will go...
339
00:15:50,760 --> 00:15:52,762
- it's still gonna
hit the top of this, but...
- Yeah.
340
00:15:52,762 --> 00:15:55,098
Who knows,
maybe it'll help us.
341
00:15:55,098 --> 00:15:56,432
Okay.
342
00:15:56,432 --> 00:15:59,402
The rear
dimensions are the same
as the original van,
343
00:15:59,402 --> 00:16:02,072
but the front has
a much lower frontal area.
344
00:16:02,072 --> 00:16:04,307
So, I'm curious to how
this is gonna work out.
345
00:16:04,307 --> 00:16:05,175
And...
346
00:16:06,076 --> 00:16:07,410
So, we have a nice
347
00:16:07,410 --> 00:16:09,679
stream going all over the top,
onto the middle--
348
00:16:09,679 --> 00:16:11,814
- Yeah, there's a lot
of turbulence.
- We have turbulence
349
00:16:11,814 --> 00:16:14,084
- from the middle.
- I'm not really thrilled
about this
350
00:16:14,084 --> 00:16:15,918
design, even though
it looks cool,
351
00:16:15,918 --> 00:16:18,254
it doesn't seem
to be helping aerodynamics.
352
00:16:18,254 --> 00:16:19,155
It does not.
353
00:16:20,690 --> 00:16:24,160
Well, right now,
I'm favoring just
the straight chop.
354
00:16:24,160 --> 00:16:25,495
I'm right
there with you.
355
00:16:26,562 --> 00:16:29,199
So, the winning design
is the straight chop.
356
00:16:29,199 --> 00:16:31,867
Now, I was actually hoping
that this wedge chop
357
00:16:31,867 --> 00:16:33,869
would be the winner,
just because it looks cooler,
358
00:16:33,869 --> 00:16:37,273
but it turns out,
the old school,
just dropping the roof,
359
00:16:37,273 --> 00:16:40,710
is going to be
the most aerodynamic, so...
360
00:16:40,710 --> 00:16:42,112
now all we have to do...
361
00:16:42,112 --> 00:16:43,446
is do this,
362
00:16:43,446 --> 00:16:44,714
to our real van.
363
00:16:50,653 --> 00:16:53,123
You know, Tory,
I've never cut
a van up before.
364
00:16:53,123 --> 00:16:55,625
- You know what, I've sheered
the top off of a car.
- Oh.
365
00:16:55,625 --> 00:16:56,959
- On purpose?
- Yeah.
366
00:16:56,959 --> 00:17:00,130
- Driving underneath
a semi-trailer.
- Oh, my God.
367
00:17:00,130 --> 00:17:02,565
But, I've never
actually done
368
00:17:02,565 --> 00:17:05,301
a proper chopping
of a hot rod.
369
00:17:05,301 --> 00:17:08,571
- But I know how,
like I kinda know the basics.
- Okay.
370
00:17:08,571 --> 00:17:12,041
- All right.
- And so we wanna cut it down,
almost ten inches.
371
00:17:12,041 --> 00:17:14,444
- Okay.
- Sorry.
372
00:17:14,444 --> 00:17:18,581
- Seriously, I mean--
- So, basically,
we're gonna have...
373
00:17:18,581 --> 00:17:21,817
Like viewing of...
we'll have like a six-inch
374
00:17:21,817 --> 00:17:23,553
viewing windshield.
375
00:17:23,553 --> 00:17:25,888
- I think if, you know,
if we get real low...
376
00:17:25,888 --> 00:17:28,624
- I mean that's how
hot rods did it, right?
- Yeah.
377
00:17:28,624 --> 00:17:31,394
- That's a healthy chunk of...
- Yes, it is.
378
00:17:31,394 --> 00:17:32,528
...of cut there.
379
00:17:32,528 --> 00:17:35,165
- What if we
took out 16 inches?
- What?
380
00:17:35,165 --> 00:17:37,433
- If 10 inches is good,
16 inches--
- Oh, my...
381
00:17:37,433 --> 00:17:39,335
- 16 inches might be amazing.
- Tory!
382
00:17:39,335 --> 00:17:41,237
- Like, just think about it.
- Tory...
383
00:17:41,237 --> 00:17:43,273
- Just listen, hear me out,
hear me out.
- Okay.
384
00:17:43,273 --> 00:17:45,608
Okay, so, we have...
385
00:17:45,608 --> 00:17:48,678
- like 15 and a half inches,
so we could technically...
- Right.
386
00:17:48,678 --> 00:17:50,646
cut this to 12...
387
00:17:50,646 --> 00:17:53,015
- And you still have--
- And you have
three inches of windshield?
388
00:17:53,015 --> 00:17:55,485
- How big are your eyeballs?
You don't need to see--
389
00:17:55,485 --> 00:17:58,321
All we need to see,
is the road.
390
00:17:58,321 --> 00:18:01,324
Like, look, look,
all we need to do, is this.
391
00:18:01,324 --> 00:18:03,659
- Look at this.
- See, here's Tory again,
392
00:18:03,659 --> 00:18:06,229
- Look...
- going crazy.
He's always trying to find...
393
00:18:06,229 --> 00:18:09,064
take something extreme,
and even go...
394
00:18:09,064 --> 00:18:11,634
- Tory extreme with it.
It's, it's...
- Look at this.
395
00:18:12,368 --> 00:18:14,204
I have plenty of head room.
396
00:18:14,204 --> 00:18:16,038
Why does everything
have to be crazy with you?
397
00:18:16,038 --> 00:18:17,540
Why can't you just be...
398
00:18:17,540 --> 00:18:19,675
- normal? Oh, my God.
- If it's worth doing, it's
worth overdoing, right?
399
00:18:19,675 --> 00:18:22,011
- When we start winning races
with this van, you'll know.
- Then...
400
00:18:22,011 --> 00:18:24,747
"Now I understand
what you were talking about."
401
00:18:24,747 --> 00:18:26,616
Okay,
you know, that's...
402
00:18:26,616 --> 00:18:29,685
- That gives us 12 inches.
- It's still aggressive,
but that's not as bad.
403
00:18:29,685 --> 00:18:32,522
- Twelve I'm okay with...
that'll be pretty cool.
- I love it.
404
00:18:32,522 --> 00:18:34,957
- Okay. Cool.
- It would look so sick
when we're done.
405
00:18:34,957 --> 00:18:36,559
So, after a bit
of back and forth,
406
00:18:36,559 --> 00:18:39,895
Tory and I have decided
to chop 12 inches.
407
00:18:39,895 --> 00:18:42,465
Will this be enough
to improve its aerodynamics,
408
00:18:42,465 --> 00:18:45,701
and beat 71 miles an hour,
in a quarter mile?
409
00:18:45,701 --> 00:18:47,937
- I'm excited. My first chop.
- Me, too.
410
00:18:47,937 --> 00:18:49,872
- All right.
-But
before we get chopping,
411
00:18:49,872 --> 00:18:51,441
we've got to get weighing.
412
00:18:51,441 --> 00:18:53,876
'Cause once we chop
this vehicle,
413
00:18:53,876 --> 00:18:56,412
- our weight's gonna change,
quite a bit.
- Oh, totally.
414
00:18:56,412 --> 00:18:59,915
And I think
it's very important
that we keep our van
415
00:18:59,915 --> 00:19:04,254
- the same weight
as the control test.
- Good point.
416
00:19:04,254 --> 00:19:06,989
That way we keep it
just looking at...
417
00:19:06,989 --> 00:19:09,625
Is the aerodynamics
making this van go faster?
418
00:19:09,625 --> 00:19:12,795
- Ah... right there,
right there, right there.
- Okay.
419
00:19:12,795 --> 00:19:15,331
All right, how much does
the van weigh with us in it?
420
00:19:15,331 --> 00:19:18,000
4,198 pounds.
421
00:19:18,000 --> 00:19:19,569
So, we'll chop the top,
422
00:19:19,569 --> 00:19:22,004
make all the modifications,
and, when we're done,
423
00:19:22,004 --> 00:19:23,706
- with you and I,
in the car...
- Yeah.
424
00:19:23,706 --> 00:19:26,075
- We need to have
this as our control weight.
- Yup.
425
00:19:26,075 --> 00:19:28,344
All right, first thing
we need to do is,
we need to strip
426
00:19:28,344 --> 00:19:31,046
- the entire interior
of the van.
- Yes.
427
00:19:31,046 --> 00:19:34,049
'Cause if we're gonna
be cutting this, there's
gonna be sparks flying.
428
00:19:34,049 --> 00:19:37,119
- We don't wanna set the
interior of the van on fire.
- Yeah.
429
00:19:38,288 --> 00:19:40,155
Now that
we know our weight...
430
00:19:41,791 --> 00:19:44,494
We can take everything
out, and just put the weight
back in, as we need.
431
00:19:44,494 --> 00:19:45,728
Sounds good.
432
00:19:49,999 --> 00:19:51,734
So far, so good.
433
00:19:51,734 --> 00:19:55,771
So, right now, I notice
that the front windshield
is really dry-rotted.
434
00:19:55,771 --> 00:19:58,708
So, I'm gonna cut
this seal on the inside,
which is little more pliable,
435
00:19:58,708 --> 00:20:01,711
allowing me to release
the pressure around the
windshield, push it outwards,
436
00:20:01,711 --> 00:20:03,679
and hopefully
save the windshield.
437
00:20:03,679 --> 00:20:07,617
Because we're gonna
replace the glass with a
polycarbonate-style material,
438
00:20:07,617 --> 00:20:10,386
and I want to use
that windshield as a base,
439
00:20:10,386 --> 00:20:13,456
to form that polycarbonate,
so we can have a nice shape
440
00:20:13,456 --> 00:20:14,890
to the front of the van,
441
00:20:14,890 --> 00:20:17,427
Uh, Rose, we have
some questions for you.
442
00:20:17,427 --> 00:20:19,729
We're about
to start this chop,
443
00:20:19,729 --> 00:20:23,433
and neither of us
have ever done like
a professional chop.
444
00:20:23,433 --> 00:20:26,201
Yeah, the size
makes sense, but...
445
00:20:26,201 --> 00:20:27,970
to be able
to make this section,
446
00:20:27,970 --> 00:20:29,605
that's where
I'm a bit confused.
447
00:20:29,605 --> 00:20:33,943
Automobiles are a football
shape, so as you
lower the roof,
448
00:20:33,943 --> 00:20:35,144
it's a little too narrow.
449
00:20:35,144 --> 00:20:37,447
So, we've either
got to widen the top,
450
00:20:37,447 --> 00:20:39,549
or we've got to move
the pillars in.
451
00:20:39,549 --> 00:20:42,785
- The plan is, we wanna
take out 12 inches--
- Oh, that's good.
452
00:20:42,785 --> 00:20:44,954
Cause when you cut
these roofs, you should
cut them a lot.
453
00:20:44,954 --> 00:20:46,422
- Yeah, that. See?
- Oh!
454
00:20:46,422 --> 00:20:48,157
- She agrees with me.
- You're onto something.
455
00:20:50,960 --> 00:20:52,562
Thanks.
456
00:20:52,562 --> 00:20:55,331
What I'm doing
right now, is just putting
in some cross bracing,
457
00:20:55,331 --> 00:20:57,767
because once we cut
the top of this van off,
458
00:20:57,767 --> 00:20:59,835
those walls are gonna
wanna fluctuate,
459
00:20:59,835 --> 00:21:01,737
and we don't wanna
loose our shape, so...
460
00:21:01,737 --> 00:21:03,739
once we have
those welded in place,
461
00:21:03,739 --> 00:21:06,542
then we can start
cutting our support beams.
462
00:21:06,542 --> 00:21:08,511
If we don't cut
these structures out,
463
00:21:08,511 --> 00:21:11,246
it'll really pose
a problem for us,
to remove the top entirely.
464
00:21:12,181 --> 00:21:15,184
And then, we can
actually do the roof chop.
465
00:21:27,229 --> 00:21:29,399
My first door.
466
00:21:32,702 --> 00:21:34,904
- This is just
a straight edge.
- So you can use that to...
467
00:21:34,904 --> 00:21:38,007
- So, it'll be a nice
straight cut.
- Okay.
468
00:21:38,007 --> 00:21:40,843
I'm partial to vans
and I put tons of power
in them.
469
00:21:40,843 --> 00:21:43,413
I love building
1000 horsepower minivans
470
00:21:43,413 --> 00:21:45,114
but cutting
the roof off of one,
471
00:21:45,114 --> 00:21:47,182
I have never,
ever done that,
472
00:21:47,182 --> 00:21:48,884
even thought
I'd ever do it.
473
00:21:50,252 --> 00:21:53,456
So, we're making
some great progress
on the van chop.
474
00:21:53,456 --> 00:21:55,458
Once we have
the entire thing cut,
475
00:21:55,458 --> 00:21:57,793
we'll drop the roof,
and see how it looks.
476
00:21:59,094 --> 00:22:00,630
So, Rose is bringing
the forklift in,
477
00:22:00,630 --> 00:22:03,866
- because we're at a very
critical point right now,
- Coming in.
478
00:22:03,866 --> 00:22:06,669
where the roof
is actually going to
479
00:22:06,669 --> 00:22:08,471
be detached from the van.
480
00:22:08,471 --> 00:22:10,773
So, we don't want
that thing just to fall
on us,
481
00:22:10,773 --> 00:22:12,341
so we're gonna
put the forks in,
482
00:22:12,341 --> 00:22:14,477
cut the rest
of the door frames,
483
00:22:14,477 --> 00:22:16,846
and then, our front supports,
484
00:22:16,846 --> 00:22:18,313
once we're done with that.
485
00:22:18,313 --> 00:22:20,182
It's a good thing we got
the forklift in place.
486
00:22:21,484 --> 00:22:23,453
This is so
cool-looking.
487
00:22:24,987 --> 00:22:27,156
This is gonna be...
488
00:22:27,156 --> 00:22:29,058
- crazy, huh?
- ridiculous, I mean...
489
00:22:29,058 --> 00:22:30,926
it's gonna sit right
on the dashboard.
490
00:22:33,062 --> 00:22:34,196
That was a lot of rust.
491
00:22:35,230 --> 00:22:36,666
All right, you guys ready?
492
00:22:36,666 --> 00:22:38,868
And then we're gonna
start lowering that roof.
493
00:22:38,868 --> 00:22:40,536
Gonna get it
to the right height.
494
00:22:40,536 --> 00:22:42,137
Oh, my goodness!
495
00:22:42,137 --> 00:22:46,375
But we are
at the point where
this van is chopped.
496
00:22:52,247 --> 00:22:54,717
That looks, oh, my God,
that looks cool!
497
00:22:54,717 --> 00:22:56,752
- Like,
that's ridiculous.
498
00:22:56,752 --> 00:22:58,688
- Is that not hilarious?
- It is.
499
00:22:58,688 --> 00:23:01,557
- Tory, can you see me?
- Oh, I've got
plenty of room.
500
00:23:01,557 --> 00:23:03,593
We just got
to get rid of these visors.
501
00:23:05,728 --> 00:23:09,499
Well, we chopped
12 inches out, and now...
502
00:23:09,499 --> 00:23:12,301
you know, Bisi said
I was crazy. I'm starting
to feel like, maybe I am
503
00:23:12,301 --> 00:23:13,503
a little crazy, too.
504
00:23:13,503 --> 00:23:15,505
I only have, maybe about...
505
00:23:15,505 --> 00:23:18,508
4 inches of windscreen
506
00:23:18,508 --> 00:23:20,843
to see out of,
but, I don't know,
507
00:23:20,843 --> 00:23:22,678
this might actually work.
508
00:23:22,678 --> 00:23:24,580
- Wow.
509
00:23:24,580 --> 00:23:26,849
I don't think I have said
as many wows in my life,
as I have today.
510
00:23:26,849 --> 00:23:28,818
- Yeah, you've been saying wow.
- Wow, wow, wow!
511
00:23:28,818 --> 00:23:33,355
- Bisi, you've been wowed
by this whole thing.
- Yes, I have been.
512
00:23:33,355 --> 00:23:35,858
So, now that
we've cut out 12 inches
from our pillar,
513
00:23:35,858 --> 00:23:38,327
the pillars don't
match up any more.
514
00:23:38,327 --> 00:23:41,263
So, what we need to do,
is actually cut the roof,
515
00:23:41,263 --> 00:23:42,732
into couple
of sections...
516
00:23:45,768 --> 00:23:48,203
...bring them out,
so the pillars line up.
517
00:23:51,541 --> 00:23:53,042
Let's just make
it a convertible.
518
00:23:53,709 --> 00:23:55,444
Weld those...
519
00:23:55,444 --> 00:23:58,347
We gotta make sure
all of our angles
are lining up,
520
00:23:58,347 --> 00:24:00,883
so this thing goes back
together beautifully.
521
00:24:01,717 --> 00:24:03,252
- Look at that.
- So, imagine...
522
00:24:03,252 --> 00:24:05,788
- Imagine it's a nice,
summer day...
- Oh, yeah.
523
00:24:05,788 --> 00:24:08,390
- Can you just sit lower?
524
00:24:08,390 --> 00:24:10,926
- Oh, yeah.
- That's what I'm talking
about.
525
00:24:11,226 --> 00:24:12,762
Whoa!
526
00:24:12,762 --> 00:24:16,465
Then we have
to put pieces of steel
in between our gaps.
527
00:24:17,967 --> 00:24:22,371
These pieces
allow for adhesion
of the center section
528
00:24:22,371 --> 00:24:24,273
to the outer sections, and...
529
00:24:24,273 --> 00:24:27,643
I had the opportunity
to curve them using
a hammer and anvil,
530
00:24:27,643 --> 00:24:30,613
to allow for a nice curvature,
so it can follow
the same lines
531
00:24:30,613 --> 00:24:34,083
as the top of the van.
532
00:24:34,083 --> 00:24:37,386
Meanwhile,
Rose is using the planishing
hammer to shape
533
00:24:37,386 --> 00:24:41,957
the largest two pieces
that will fill in the bigger
sections of the roof.
534
00:24:41,957 --> 00:24:46,061
Yeah this gives it strength,
so, that's you know,
it's dent resistant.
535
00:24:46,061 --> 00:24:47,897
So, it has
dimensional stability.
536
00:24:47,897 --> 00:24:49,632
So, it gives it a little
bit more structure.
537
00:24:49,632 --> 00:24:50,900
- Yeah.
- Good.
538
00:24:53,969 --> 00:24:55,470
It's just
like an art form.
539
00:24:55,470 --> 00:24:58,841
It's just like, making sure
the steel's lining up,
540
00:24:58,841 --> 00:25:03,245
making sure the form,
the top of the van,
is perfect,
541
00:25:03,245 --> 00:25:05,447
following the original top.
542
00:25:07,049 --> 00:25:09,919
It's more like sculpting
than it is fabricating.
543
00:25:15,157 --> 00:25:16,358
Oh,
she's ready to drive.
544
00:25:16,358 --> 00:25:18,628
- We got a chop top!
- Yes, we do, sir.
545
00:25:19,695 --> 00:25:22,431
Dude, look at how
much head space
we have in there.
546
00:25:22,431 --> 00:25:24,867
That's plenty of room to see.
547
00:25:24,867 --> 00:25:27,870
Our steering
and pedals go back
to the original position,
548
00:25:27,870 --> 00:25:30,239
and the seats
are bolted to the floor.
549
00:25:31,807 --> 00:25:35,210
So, this is all
about aerodynamics
and it's not about weight.
550
00:25:35,210 --> 00:25:37,546
3,952.
551
00:25:37,546 --> 00:25:40,716
We need to make sure
it weighs the same as it did
552
00:25:40,716 --> 00:25:41,917
before we chopped it.
553
00:25:41,917 --> 00:25:43,285
All right,
what are we at, Bisi?
554
00:25:43,285 --> 00:25:46,321
We are 4,228.
555
00:25:47,757 --> 00:25:48,791
How about now?
556
00:25:48,791 --> 00:25:50,660
4,199.
557
00:25:50,660 --> 00:25:52,962
- I'll take it. 4199.
- Close enough.
558
00:25:52,962 --> 00:25:55,665
I christen her...
Ruster.
559
00:25:55,665 --> 00:25:57,366
Ah, I love it.
560
00:25:57,366 --> 00:25:59,534
- How's that?
- Perfect.
There you go.
561
00:26:03,673 --> 00:26:06,108
-Wow!
562
00:26:06,108 --> 00:26:09,979
-This thing
is so cool-looking.
-It's beautiful.
563
00:26:11,714 --> 00:26:16,018
I have built vans
in my time, but nothing
this exquisite.
564
00:26:16,018 --> 00:26:18,120
And, I thought when we said
we're gonna chop this van,
565
00:26:18,120 --> 00:26:19,288
it was gonna be as easy as
566
00:26:19,288 --> 00:26:21,290
- take out a section,
drop the roof...
- Oh, no.
567
00:26:21,290 --> 00:26:22,692
Weld it back,
and we're done.
568
00:26:22,692 --> 00:26:25,360
I had no idea
how much work this
was gonna take,
569
00:26:25,360 --> 00:26:27,296
but hopefully,
it's gonna pay off.
570
00:26:27,296 --> 00:26:29,064
Well, there's
only one way to find out.
571
00:26:29,064 --> 00:26:30,833
Take it to the tarmac,
and see what happens.
572
00:26:30,833 --> 00:26:33,135
I love it when
a van comes together.
573
00:26:33,135 --> 00:26:36,772
- I pity the fool
who doesn't like this van.
574
00:26:38,507 --> 00:26:40,575
Does size matter,
or not?
575
00:26:40,575 --> 00:26:42,011
They're about to find out.
576
00:26:42,011 --> 00:26:44,714
With the top of the van
now 12 inches lower,
577
00:26:44,714 --> 00:26:47,182
it's time to discover
whether chopping the roof off
578
00:26:47,182 --> 00:26:49,719
really does make
a vehicle go faster.
579
00:26:49,719 --> 00:26:52,021
But first they're gonna
re-do the tuft test,
580
00:26:52,021 --> 00:26:56,425
to compare the van's
pre and post chop
aerodynamics.
581
00:26:56,425 --> 00:26:59,729
- All right, Bisi,
the chop is done.
- Yes.
582
00:26:59,729 --> 00:27:02,597
- We have the tufts on it.
It's time to do a run...
- Absolutely.
583
00:27:02,597 --> 00:27:05,735
To see if our chop helped us,
or hurt us.
584
00:27:05,735 --> 00:27:08,237
Yes, we saw some good
results in a small-scale test.
585
00:27:08,237 --> 00:27:10,439
Now, we can
monitor what happens
586
00:27:10,439 --> 00:27:12,141
in real life!
587
00:27:12,141 --> 00:27:14,343
- All right,
you ready to do this?
- I'm ready, sir.
588
00:27:15,410 --> 00:27:17,446
- All right, here we go.
- All right.
589
00:27:19,581 --> 00:27:21,784
- Might help to put it in gear.
- That would help a little bit.
590
00:27:23,252 --> 00:27:25,554
Like before,
we're being tracked
by a high-speed camera.
591
00:27:26,355 --> 00:27:27,589
Oh, wow!
592
00:27:27,622 --> 00:27:30,492
Oh, look at that.
So, initially, with
the old body,
593
00:27:30,492 --> 00:27:32,762
- we saw a lot
of turbulence on top.
- Yeah.
594
00:27:32,762 --> 00:27:33,829
Everything's laying flat.
595
00:27:33,829 --> 00:27:35,530
- Remember we had
a lot of disturbance before?
- Yes!
596
00:27:35,530 --> 00:27:38,033
-All on the roof before
they were flapped around...
-It's just laying flat.
597
00:27:38,033 --> 00:27:39,334
And now
they're laying flat.
598
00:27:39,334 --> 00:27:41,670
Look at our windshield.
Beautiful.
599
00:27:41,670 --> 00:27:43,305
I mean,
that's hopeful for us.
600
00:27:43,305 --> 00:27:45,174
I think we're
in the right path, Tory.
601
00:27:47,209 --> 00:27:49,945
Let's see if this
changed the aerodynamics.
602
00:27:49,945 --> 00:27:51,546
Wow, Tory,
look at that.
603
00:27:51,546 --> 00:27:54,349
That shape
actually has made
a difference.
604
00:27:54,349 --> 00:27:56,318
Initially, when
the van was in factory form,
605
00:27:56,318 --> 00:27:59,521
we saw a significant
amount of turbulence,
on the roof of the van...
606
00:27:59,521 --> 00:28:02,024
-Yeah.
-telling us that
it didn't do very well
607
00:28:02,024 --> 00:28:04,226
-in allowing us to cut
through the wind easily.
-Yeah.
608
00:28:04,226 --> 00:28:06,461
- And now, all that--
- And now,
everything's just laying flat.
609
00:28:06,461 --> 00:28:08,097
- They're all laying flat.
- Oh, my goodness.
610
00:28:08,097 --> 00:28:11,466
It's like we've almost
created a wedge
to cut through the air.
611
00:28:11,466 --> 00:28:13,702
A beautiful,
aerodynamic wedge.
612
00:28:13,702 --> 00:28:17,306
I'm excited because,
this is now mimicking
the aerodynamic profile
613
00:28:17,306 --> 00:28:18,941
- of a modern car. -
Yeah.
614
00:28:18,941 --> 00:28:21,977
That means, what
we saw on the small scale,
translated very well,
615
00:28:21,977 --> 00:28:25,114
-to real life.
-Which also means,
that might translate
616
00:28:25,114 --> 00:28:27,917
- to us getting a faster speed.
- Can we do it?
617
00:28:27,917 --> 00:28:29,551
- Ready for the real test?
- I'm so ready.
618
00:28:31,921 --> 00:28:34,289
If we get
a faster speed,
619
00:28:34,289 --> 00:28:35,825
than 71 miles an hour,
620
00:28:36,625 --> 00:28:39,461
this is a completely
confirmed myth.
621
00:28:39,461 --> 00:28:40,495
I agree.
622
00:28:41,330 --> 00:28:43,432
Chop top, final test.
623
00:28:43,432 --> 00:28:44,733
Quarter mile.
624
00:28:44,733 --> 00:28:45,634
Three.
625
00:28:45,634 --> 00:28:46,668
Two.
626
00:28:46,668 --> 00:28:47,636
One.
627
00:28:47,636 --> 00:28:49,171
- Hit it.
628
00:28:53,308 --> 00:28:55,477
C'mon, baby!
629
00:28:55,477 --> 00:28:57,012
You can do it.
630
00:28:57,012 --> 00:28:58,180
49.
631
00:28:58,180 --> 00:28:59,181
50.
632
00:29:00,950 --> 00:29:02,384
- 60.
- C'mon!
633
00:29:04,253 --> 00:29:07,522
- Are we gonna do it?
634
00:29:07,522 --> 00:29:08,690
We're gonna do this!
635
00:29:08,690 --> 00:29:11,026
- That's good!
636
00:29:11,026 --> 00:29:12,761
- We did it!
- That's great!
637
00:29:12,761 --> 00:29:15,697
- We went
6 miles per hour faster.
- I will take it.
638
00:29:15,697 --> 00:29:18,533
- I will take it.
I will take that.
639
00:29:18,533 --> 00:29:20,202
And,
after two more runs...
640
00:29:20,202 --> 00:29:21,436
That's good!
641
00:29:22,938 --> 00:29:25,074
-It's crazy!
-Oh, my God!
642
00:29:25,074 --> 00:29:26,541
Three, two, one.
643
00:29:27,542 --> 00:29:28,911
...it's
a done deal.
644
00:29:28,911 --> 00:29:30,379
You can do it!
645
00:29:30,379 --> 00:29:32,681
Chopping,
and lowering this
van's roof...
646
00:29:32,681 --> 00:29:35,017
- Oh, my goodness!
- We confirmed it.
647
00:29:35,017 --> 00:29:37,352
...has
made it quicker.
648
00:29:37,352 --> 00:29:39,454
Those old timers knew
what they were talking about.
649
00:29:39,454 --> 00:29:42,591
- Chopping your car
will make you go faster!
- Absolutely!
650
00:29:42,591 --> 00:29:44,159
- That's great!
- It worked!
651
00:29:45,060 --> 00:29:46,628
- Wow!
652
00:29:46,628 --> 00:29:48,697
That was crazy!
653
00:29:48,697 --> 00:29:49,899
I can't believe it.
654
00:29:49,899 --> 00:29:51,566
Ruster did it.
655
00:29:51,566 --> 00:29:55,037
All we did is, we just
chopped it and brought
it down by 12 inches.
656
00:29:55,037 --> 00:29:57,272
And that gave us
a faster speed.
657
00:29:57,272 --> 00:29:59,374
You're absolutely correct.
The van weighs the same,
658
00:29:59,374 --> 00:30:02,144
same driver,
same low horsepower
power plant,
659
00:30:02,144 --> 00:30:04,813
six miles an hour
is a big deal.
660
00:30:04,813 --> 00:30:06,481
- I'll take that.
- Yes.
661
00:30:06,515 --> 00:30:10,119
And the thing is,
in a race, any little bit
of advantage you can take,
662
00:30:10,119 --> 00:30:11,120
- you'll take it.
- Right.
663
00:30:11,120 --> 00:30:13,088
- So, we had
to confirm this myth.
- Yes!
664
00:30:13,088 --> 00:30:15,257
Those old hot rodders,
they were onto something.
665
00:30:15,257 --> 00:30:16,658
- They knew
what they were doing.
- Awesome.
666
00:30:16,658 --> 00:30:18,827
- Good job.
- That was a lot of work.
667
00:30:18,827 --> 00:30:20,629
Let's go see
if we can find people
to drag.
668
00:30:20,629 --> 00:30:22,264
Oh, they won't know
what's coming.