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Pete Gossett
Pete Gossett MegaDork
2/8/18 6:08 a.m.

In reply to corsepervita :

Wow, awesome job! It still amazes me you can make stuff like this at home for a relatively low investment. Unfortunately, I would never ever have the patience to deal with that - let alone take the time to learn CAD. 

corsepervita
corsepervita HalfDork
2/8/18 12:04 p.m.
Pete Gossett said:

In reply to corsepervita :

Wow, awesome job! It still amazes me you can make stuff like this at home for a relatively low investment. Unfortunately, I would never ever have the patience to deal with that - let alone take the time to learn CAD. 

Currently I'm using google sketchup and rhino 3d.  I bought a license for Rhino years ago when I was in college (literally a decade ago).  The software still exports STL files (which are used in 3d printing), and so I can do the more fine and weird precise stuff in skectchup and move things over for the fine 3d perfection in rhino.  Toss it into cura, and boom, print.

 

Once it got mostly calibrated it was much easier.

RevRico
RevRico UltraDork
2/8/18 12:22 p.m.

What printer did you go with? You are using ABS or another higher heat filament for in the vehicle instead of PLA, right?

I don't think I've chimed in at all on this thread, just been watching from afar trying to wrap my head around things. Fantastic project for a great car, and seeing everything come together has been awesome. Bonus awesome by going straight to WSJ too. 

corsepervita
corsepervita HalfDork
2/8/18 12:59 p.m.
RevRico said:

What printer did you go with? You are using ABS or another higher heat filament for in the vehicle instead of PLA, right?

I don't think I've chimed in at all on this thread, just been watching from afar trying to wrap my head around things. Fantastic project for a great car, and seeing everything come together has been awesome. Bonus awesome by going straight to WSJ too. 

I am actually using PLA right now.  I'm using a maker select v2.  I'll snag pics when I get home.

corsepervita
corsepervita HalfDork
3/1/18 2:07 a.m.

So the velocity stacks from the original 42mm DCNF webers are a flow killer since they don't match.  Been working this week on making some that I can print out.  After that i'll print out some air boxes.

These are 40mm, with a 7 degree peak at the top, then used some bends and flares to make a nice round bit at the top and merged them.  Should be a nice improvement.

corsepervita
corsepervita HalfDork
4/22/18 2:11 a.m.

Well guys.  Life has been a bit... uhhhh, crazy.

I quit my job that was making me miserable.  Found a new job.  I've also been busy as hell working on velocity stacks.  Happy to say my first set has finally gone from 7 different revisions to what you see here.  They're on the lambo and happy as a clam.

I need some more mounting hardware that's prettier but this was just for testing.  Best part is they'll fit DCNF webers and DCNF style ITBs, so i'm stoked about that.

I got the lambo put back on for full time insurance so i can scoot it around and have fun.  I don't have a lot of time since the new job is nuts.  I've slept maybe a total of 12 hours this week, but it's the best thing I've ever done and I love it.  I'm finally sleeping this weekend so that's rad.  I need to flow test and re-sync my itbs now that these are on.  But the response seems much happier, and since there's no more lip there's no more flow killers!  They're perfectly matched to 40mm, printed at 100 microns.

Jerry From LA
Jerry From LA SuperDork
4/26/18 7:24 p.m.

I wonder if the ridge-iness impedes airflow or enhances it.

 

Recon1342
Recon1342 Reader
4/26/18 8:39 p.m.

In reply to Jerry From LA :

The rough texture should disturb the boundary layer air and help accelerate airflow more efficiently.

AngryCorvair
AngryCorvair MegaDork
4/27/18 9:58 a.m.

In reply to corsepervita :

i bet there's a market for those stacks.  can the printer run while you sleep?   because getting paid to sleep would be my dream job.

Jerry From LA
Jerry From LA SuperDork
4/27/18 1:10 p.m.
AngryCorvair said:

In reply to corsepervita :

i bet there's a market for those stacks.  can the printer run while you sleep?   because getting paid to sleep would be my dream job.

If you can print brake pads, then your dream is a reality.

corsepervita
corsepervita HalfDork
4/29/18 10:31 p.m.
AngryCorvair said:

In reply to corsepervita :

i bet there's a market for those stacks.  can the printer run while you sleep?   because getting paid to sleep would be my dream job.

mezzazine has already bought a set from me ;)  i can easily set it up and walk away and come back to parts.  The only part that sucks is that i print at 100 microns for good quality, so it takes forever.  I'm planning on buying another printer for larger parts here very soon, and will have them both running nonstop.

Jerry From LA said:
AngryCorvair said:

In reply to corsepervita :

i bet there's a market for those stacks.  can the printer run while you sleep?   because getting paid to sleep would be my dream job.

If you can print brake pads, then your dream is a reality.

I mean I could but I'd feel bad for the poor chap who was like, "It stopped great for about 2 stops and then it just smelled like burning plastic and all I smelled was hot plastic and metal" frown

corsepervita
corsepervita HalfDork
4/29/18 10:36 p.m.

Alright so ... my brain hurts but i've been working on a design for my air plenums and these are nowhere near finished but i've got a mini sketchup in rhino of what i want them to look like.  The complexity in rhino wasn't good enough or efficient enough so i'm now working on them in google sketchup.  My first prototypes will be multiple pieces because of the fact my printer can't print any one piece this big.  Once I get a bigger printer? No problem.

All i've really got is a set of digital calipers so it's a LOT of measuring.  I derived the dimensions by measuring the stock airboxes, the thickness of the aluminum, where the ITBs would sit.  Where they currently sit on the runners, subtracted that top to bottom vs the top of the airboxes and calculated my maximum height from there.  Then measured width of the airboxes where the actual linkage would NOT be on the stock airboxes (because that's a thing).  This is what I've got so far.

The next steps will be to extrude some small areas in there so I can put something to seal between them and design some stuff on the sides where I can put something to retain them.  I kinda like the oldschool clamp style stuff that Porsche used on their airboxes, but I've also though of going 911 style rubber straps from side to side since that's also pretty efficient.  I need to measure the straps on my 931 and hunt down some hardware.  I do NOT want to do screws because I want something that's super easy to just get into on a whim and access.

Once I've got them in halves with that down I can figure out how I want to do the air outlets, which i'm thinking of just extruding in a similar manner to the rhino sketchup I did.

Current mood music for sketchup

 

KaiserM715
KaiserM715 New Reader
5/25/18 1:55 p.m.
The0retical said:

In reply to corsepervita:

That would be hilarious actually. The best machining and casting techniques that Italy had to offer in the 80s gets worked over 30 years later by a group of people that that consider used craigslist appliance sheet metal to be the best source of NLA body panels.

Still getting caught up, but this quote is worth a revisit.  Indeed.

 

Awesome project and one of my favorites on GRM.

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