3 replies to this topic

[Andy69]

I'm about to break out the suspension modeling worksheet again. There is a thread here, partially done.  Going to finish that up but a summary of the results is that I ended up with more understeer than predicted, I suspect due to my spoiler.  So I'm going to address the aero question as well.

 

Looking for resources on balancing aero.  You can use a suspension calculator to get somewhere in the ballpark for suspension setup, but is there something similar for aero?  It would be nice to have somewhat of an idea of how big a splitter and spoiler can/should be and how to balance them with each other for the optimum effect.  I figure there will be some testing and tuning with regard to the suspension to get the optimal setup.

 

What has anyone here used as far as calculators and actual setup?

Edited by Andy69, 30 May 2024 - 09:29 AM.

[CSPCRX]

In too learn.  I have never run aero on mine.  Three others that I know, long time racers of 1st gens, one stock chassis and other two full tube.  They ran splitters.  They also ran on full sticks.  I could ask for a measurement.

[Andy69]

In too learn.  I have never run aero on mine.  Three others that I know, long time racers of 1st gens, one stock chassis and other two full tube.  They ran splitters.  They also ran on full sticks.  I could ask for a measurement.

 

There are class limits in SP - front aero is limited to between the front of the wheel opening and the front edge of the bumper and the outermost edge of the side bodywork, rear spoilers 9' tall and must not extend past the outermost edge of the bodywork.

 

Seems to me you would max out the front and adjust the rear to balance.

 

I've run a rear spoiler for years - ever since I tried a suction cup one a friend used.  I was coming around a sweeper noticeably faster than I previously had (spectators confirmed this) when the outside section came off.  The car immediately spun.  Spectators confirmed this and the photographer captured about 10-12 photos in sequence.

 

Might be the reason I've run 500-550# springs in the rear.  DGATW suspension calculator recommends 400#, but the car understeers badly.  Hoping maybe a frojnt splitter will balance that out.

Edited by Andy69, 03 June 2024 - 07:30 AM.

[CSPCRX]

Makes sense.  Also with Solo2 speeds are lower so you want as much surface area as you can for the air to act on.