Originally posted by Project D
R is better in terms of speed?control? or???
The S is the basic version supplied with a .15 pull start motor for those new to IC racing.
The R is the race version with better parts all round but requires a motor and pipe.
The S can be fully upgraded in to the R, and can use almost all the R parts (the rest will fit once certain R parts are fitted).
If you are starting out from scratch, and money is tight, then the S could be the best route (* rout ?) to go.
*English / US difference again