[Serum]

Hi Andrew;

Perhaps you can use the two speed on the track, on the normal road it's useless with the foam tires lacking of grip.

Your sizes might give you some troubles with the right lipo's in 6S;

A speedcontroller that is capable of doing 6S at this moment is the MGM

You could set with 4/5S though, since you don't need the 6S on a ~2.5 kg heavy vehicle