I would go with the the xxx-cr, I have the gtb with 6.5 and 5.5 and soon 4.5. I like the 5.5 motor the best and i run lipos to. Open mod. The 6.5 is pretty good but does not have the motor in places that I like to have it. Would waste the money on B-4. You dont need a fan. Cut a little flap in the top right before the speedo and it will keep it cool. Motor choice going to depened on the track that your are running and the size of it.
|