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have no clue on the down force numbers with the spoiler. The whole this is a WAG (wild a** guess). More monkey see monkey do than any real engineering.
Thank God for an honest answer! I kinda figured it was like that, but then ya never know when you'll come across some genius (or BS artist) that can 'splain it all. I had a 4" tall spoiler lip across the rear of my car's bodywork, but it was foam core like the body and the thickness didn't look right somehow. I'm probably going to go with (about) that same height when I do it in aluminum.
I build a flat floor on the main part of the chassis of the Slotus, and a big ol' Gonzo-sized diffuser out the back. Like you said, that upward angled chassis just seems to beg for a diffuser. I'll try to get a decent pic of it, but you can get an idea from this shot of James welding whilst folded up like a taco:
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It's probably not compliant with anybody's rules, I don't begin to know how well it will work, but it looks cool...
I did read up a bit on diffusers, and it seems the downforce generated is applied near the forward end of the diffuser. I started mine just under the nose of the diff. Everything else is flat.
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JD, father of
Quinn, Son of a...
Build LogQuinn the Slotus:Ford 302 Powered, Mallock-Inspired, Tube Frame, Hillclimb Special "Gonzo and friends: Last night must have been quite a night. Camelot moments, mechanical marvels, Rustoleum launches, flying squirrels, fru-fru tea cuppers, V8 envy, Ensure catch cans -- and it wasn't even a full moon." -- SeattleTom