One way I have reduced spin outs is to adjust my ball differential
so that it is loose enough to allow the diff to slip just before my wheels spin. (and thus loose traction)
If you do this you will get a clutch like effect that will allow you to accelerate almost as fast as possible without the risk of a spin out.
In practice you will see that your car will ,on average, accelerate faster while spending less time recovering from spills.
The diff will also hold this precise setting surprisingly well.
Your diff is also smoother when less tight.

thanks I will haveto try it:D:D:D:D:D
How do you adjust THAT, in the first place ?!? There are NO variables on my stock Mini-Z.... Do I need a hop-up to adjust this ?!??
The key word is BALL DIFFERENTIAL ;) gota use that to replace the stock gear diff...
yes, ball differential... depending on how smooth or rough the surface is decides how loose or tight you want your differential... tire selection is helpful too... if theyre too soft on rough cement, you might end up rolling on sharp turns... or if theyre too hard on smooth surfaces... youll end up sliding...
ok, dumb new guy question, but how to you adjust the ball differential. The GPM one i put in shows you using a little allen wrench on the motor side, but I put the wrench in the little holes, and it does not feel like it's engaging anything. Am I wrong??