I've been fiddling around with my SP12X lately. My local track is a pretty bumpy, yet high traction carpet track, so it's proven to be a little bit of a setup challenge. So far I've come up with this:

Front:

-.018 springs
- 5 deg reactive
- Caster... middle (shim on each side)
- 1.5 deg of camber
-I put a little bit of the blue Corally tube lube on the front kingpins to help dampen it a bit since it was all I had, I'd like to try something else though to compare.
Parma pro 38 Magenta front (Jaco double pink is good too) at 1.65 with about 1/4 sauce, sidewalls lightly glued
3.5mm ride height
Angled servo mount 8mm back with a Futaba s9650

Rear:

- HB Cyclone 12 shock with 30wt oil
- Olive spring (with 1.6mm T-bar) or Silver (with 2mm T-bar)
- 2 screws in T-bar... cut the T-bar spacer to 2 round spacers as opposed to one single bar spacer
- about 2.5mm of pod droop (take some Hudy droop blocks on the main chassis ands use the droop gauge to measure how far the rear pod drops at the very back.)
- 10K silicone fluid in the tubes
- Parma pro 38 Grey tires at 1.75, sidewalls lightly glued. (Jaco yellow is good too) full sauce
Track width (172mm.... I think thats ROAR max)

Body: Parma speed 8 HD LW

I'm still going back and forth between the 2.0mm T-bar and the 1.6. The 1.6 would be better if I could to do something to make it stiffer side to side... Front to back it's perfect. I tried a 2.0mm T-bar with the taper in the back shaven off, but it basically did the opposite that I wanted.

For a smoother track the 2.0mm T-bar would be awesome. So far I've only been running 2 screws in the T-bar, instead of the normal 3. It seems to help in the bumps a lot more. Also... .020's and 10 deg of reactive caster, (plus with the shims all back to give the maximum amount of caster) was really good too on a smoother track.

Korey