Originally Posted by V-point

Ok, so here is the last asphalt setup I used, FWIW.

Bear in mind that I was running this as a VTA car. TC tires should grip better, but I would start close to this and go from there.

Do the APEX cars still come with two wings? Mine did, and the steeper angle wing made a huge difference when I first bashed with the car out of the box (before I turned it into a VTA).

If you don't have traction compound, then I agree with SteveM -- use Simple Green every run and keep those tires as clean as possible.

And no, that's not a typo below... I actually did have the fronts set for toe IN. Contrary to every other setup in the world. Prior to this setup I had them at 0°.

Parameter : Value
---------------------------------------------------------------------
Track: Asphalt with soda treatment

Front Wheels: 26mm HPI VTA 5-spoke black
Front Track Width: 1 blue spacer (1mm)
Front Tires : HPI 4793 (standard VTA)
Traction Compund (coverage): paragon ground effects (50%)
Front Shock Oil: 25
Front Shock Rebound: 0% (caps drilled)
Front Springs (lbs/inch): Silver (14.5)
Front Shock Tower position: innermost position
Front Shock A-arm position: outermost
Front Ride Height: 6.5
Front Droop Height (Front Droop): 10.0 (3.5)
Front Toe: 1° toe IN
Front Camber: -1.0° to -2.0° see note1
Front Camber Link Ball Studs - inner: tall, 1mm blue spacer
Front Camber Link Ball Studs - outer: tall, no spacer
Front Camber Link position - inner: innermost position
Front Camber Link position - outer: fixed, non-adjustable.
Front Caster: fixed, believed to be 6°
Front Differential Oil: 2000 cst

Rear Wheels: 31mm HPI VTA 5-spoke black
Rear Track Width: normal
Rear Tires: HPI 4797
Traction Compound (coverage): SXT3.0 (100%)
Rear Shock Oil: 30
Rear Shock Rebound: 25%
Rear Springs (lbs/inch): Green (12.0)
Rear Shock Tower position: innermost
Rear Shock A-arm position: outermost
Rear Ride Height: 6.0
Rear Droop Height (Rear Droop): 10.0 (4.0)
Rear Toe In: 1.5° to 2.0° depending on tire rotation
Rear Camber: -1.0°
Rear Camber Link Ball Studs - inner: short, no spacer
Rear Camber Link Ball Studs - outer: short, no spacer
Rear Camber Link position - inner: 2nd from outermost
Rear Camber Link position - outer: outer position

Spur/Pinion Pitch: 64
Spur Gear Teeth : 72
Pinion Gear Teeth: 50
Final Drive Ratio: 3.766
Rear Differential Oil: 1000 cst

note1: -1.0° for new tires, increasing to -2.0° as tires wear


Good luck.