Yeah, this will be my 3rd car! all scratch built!
I have about 20kg of ballast to play with, of which I want to put much into the nose. We've recently changed our control tire, with a wider front, thus I want to move some of the mechanical load forward.
Aerodynamically, I'd like to first ascertain if we are producing any DF, at this point I doubt it, perhaps the cars are slightly negative lift. Areas's I'd like to generate some DF, compared to the other cars, are with my sidepods and drooped nose. But at this point it's so so theoretical.
Some of the interesting things about Vee's are:
Rear: We use a zero roll setup at the back with one coil-over. reason for this is a very high RC at the back because of the mandatory swing axle VW type 1 gearbox. We use a very stiff rear spring with very little camber, as adding camber dramatically increases driveline drag. (The joints are not CV)
Front: Mandatory VW type 1 trailing arm suspension. RC consequently at ground level. I like a soft front end with enough preload so I can lift the inner wheel over curbs. I also run some anti-dive, with a 3rd spring at the longer tracks.
Motor: Stock 1400 watercooled golf motor, with a control cam, and 40mm twin sidedraughts. everyone has very similar power which makes for nice tight racing. Focus really is on chassis, suspension and driver.
Even with our fairly limited "technology", we match Formula Ford Zetec times, especially at tight twisty tracks.
If you can't fix it with a hammer, it's probably electrical