1 2 3
papamilad
papamilad New Reader
12/18/19 11:08 a.m.

After running our turbo 5.3 E28 for two years without a single overly catastrophic failure, we've decided to not push our luck and give her an early retirement. Now outside of the budget, the car will get some decent injectors (read:not decapped) a good dyno tune, and some drag radials and hopefully not run a pathetically slow quarter mile.

In comes our latest lawn ornament. A 2001 Chevy S10 EXTREME edition, fully equipped with premium features such as most of the factory ground effect aero, a bitchin' cowl hood, a stuck tailgate (so it can't fly open during a pass!) and some Need for Speed spec flame gauge faces. All for the low-low price of $275!

 

 

 

papamilad
papamilad New Reader
12/18/19 11:18 a.m.

One of our goals for this car is to develop some legit aero components. To do so, we will develop a 3D CAD model so we can utilize some CFD  (computational fluid dynamics) methods to test out various designs and packages. Big thanks to the aero wizards at Nine Lives Racing and Morlind Engineering for sponsoring us with some solver time and helping out!

 

We're starting with a scan of the car which we can use to develop a parametric model for CFD.

 

 

 

 

Patrick
Patrick MegaDork
12/18/19 11:26 a.m.

Keep the random glitter paint

Robbie
Robbie GRM+ Memberand MegaDork
12/18/19 11:34 a.m.

Oh this will be berking awesome. 

If you need any tips on testing aero from the bed of a pickup truck, I know a guy.

GIRTHQUAKE
GIRTHQUAKE HalfDork
12/18/19 12:14 p.m.
Patrick said:

Keep the random glitter paint

Seconded. Looks 90s rad.

RacetruckRon
RacetruckRon GRM+ Memberand HalfDork
12/18/19 1:00 p.m.

I'm a sucker for go-fast minitrucks and 3d scanners. This is gonna be cool.

TVR Scott
TVR Scott GRM+ Memberand HalfDork
12/18/19 1:42 p.m.

What hardware and software are you using for the scanning? 

Mndsm
Mndsm MegaDork
12/18/19 1:47 p.m.
GIRTHQUAKE said:
Patrick said:

Keep the random glitter paint

Seconded. Looks 90s rad.

Motion carried. 

TheV8Kid
TheV8Kid Dork
12/19/19 7:03 a.m.

Looks like a good start. Remember, I expect 10s in the quarter mile this year. Lol

SVreX
SVreX MegaDork
12/19/19 7:22 a.m.

Excellent!

classicJackets
classicJackets Dork
12/19/19 8:11 a.m.

Did you guys put that paint on?? It looks "clean" in the trailer pictures. 
Either way, love it. Do something inordinately stupid with it - the mini-truck crew on here calls for it.

 

 

mazdeuce - Seth
mazdeuce - Seth Mod Squad
12/19/19 8:31 a.m.

If you remove those gauge faces I'm writing you out of my will. 

MadScientistMatt
MadScientistMatt PowerDork
12/19/19 9:55 a.m.

Somehow I knew this would be an S10 Xtreme when I saw the thread title.

xflowgolf
xflowgolf SuperDork
12/19/19 10:33 a.m.

technology is rad.  that render is neato.  

Robbie
Robbie GRM+ Memberand MegaDork
12/19/19 10:56 a.m.
mazdeuce - Seth said:

If you remove those gauge faces I'm writing you out of my will. 

Damn. What a good idea!!! I'm totally adding "please take 35 lbs of random junk from my garage and send to Georgia Tech's wreck racing challenge team upon my death" to the bottom of my will.

RandolphCarter
RandolphCarter New Reader
12/19/19 8:01 p.m.
Robbie said:
I'm totally adding "please take 35 lbs of random junk from my garage and send to Georgia Tech's wreck racing challenge team upon my death" to the bottom of my will.

This discussion group, again gloriously encapsulated in one sentence.

papamilad
papamilad New Reader
1/2/20 2:14 p.m.

oh boy I am bad at replying to forums

 

so the 'glitter paint' is actually just spray on chalk that helps aid in the 3D scanning process (helps the software piece together the different images)

To scan, all you need is a decent camera with that has a reasonably realistic focal length (think 35mm prime lens or 55mm on a full frame DSLR) and a copy of a program called Agisoft Metashape. Then just take a bunch of pictures! The number of pictures you can take is limited heavily by available RAM. For example, this scan used around 700 images and was using around 100gb of RAM to process. Took a bit over a day with a 40 core machine. But, you can still get very good results with a home computer (~16gb RAM with around 200 images), you'll just have to be very sparing with the detail shots (IE: to capture the mirrors I probably took about 50 images alone).

 

Also Wreck Racing is more than happy to accept any unwanted go fast bits, whether you're dead or alive!

RacetruckRon
RacetruckRon GRM+ Memberand HalfDork
1/2/20 2:24 p.m.
papamilad said:

To scan, all you need is a decent camera with that has a reasonably realistic focal length (think 35mm prime lens or 55mm on a full frame DSLR) and a copy of a program called Agisoft Metashape. Then just take a bunch of pictures! The number of pictures you can take is limited heavily by available RAM. For example, this scan used around 700 images and was using around 100gb of RAM to process. Took a bit over a day with a 40 core machine. But, you can still get very good results with a home computer (~16gb RAM with around 200 images), you'll just have to be very sparing with the detail shots (IE: to capture the mirrors I probably took about 50 images alone).

Oooooh that's cool!  I have been curious about how well photogrammetry works.  How hard was it to scale the mesh properly and import it into Fusion360?  Software, a DSLR and some time is a lot cheaper than a $30k structured light scanner.

Brett_Murphy
Brett_Murphy GRM+ Memberand UltimaDork
1/2/20 2:45 p.m.

Flames on the instruments move you out of stock and put you into Mod, so might as well go nuts. 

slowbird
slowbird Dork
1/2/20 2:55 p.m.

In reply to papamilad :

I need to use this technology to 3D scan my personal vehicles so I can 3D print scale models of them. laugh

ultraclyde
ultraclyde GRM+ Memberand PowerDork
1/2/20 2:58 p.m.
papamilad said:

Took a bit over a day with a 40 core machine.

As a Tech grad, I love how casually you refer to a 40 core machine like we all have one set up in the back of the garage.

These trucks a such a great sleeper platform. 

papamilad
papamilad New Reader
1/2/20 2:58 p.m.

In reply to RacetruckRon :

Very easy. The software gives you an STL so you can just import it straight into fusion and then just position it and roughly center and pick some easily measurable dimension on the car that you can use to find a scaling factor and apply it in fusion

papamilad
papamilad New Reader
1/2/20 3:00 p.m.

In reply to ultraclyde :

Are you telling me, as a tech grad, you dont have an old 40 core rack you bought for dirt cheap off facebook in your garage? shameful

papamilad
papamilad New Reader
1/2/20 3:01 p.m.
slowbird said:

In reply to papamilad :

I need to use this technology to 3D scan my personal vehicles so I can 3D print scale models of them. laugh

Unfortunately you can't 3D print straight from the scan since it isnt 'water tight'. You need to spend a lot of time recreating the model with a parametric CAD program like fusion by hand using the scan sort of as a trace.

slowbird
slowbird Dork
1/2/20 4:50 p.m.

In reply to papamilad :

Aww fudge.

1 2 3
Our Preferred Partners
RJA8bVzfqPmNY9BPtuS597RHHKrWctnAA3UYaDY9UMuxbBtNZ1LyReakFYoFCdcl