Originally Posted by MantisWorx

Unfortunately odds are thats not going to happen and thats simply because it would only be your market that would use them, those pinions do not work well with the helical R+P. My suggestion would be to go the other way and install the Straight cut R+P and go with the 46/43 spur gears. What is the diameter of the foam tires, i can figure out the roll out or just use this formula: I have found that a second gear roll out around 1.51 is really good
http://www.scriptasylum.com/rc_speed/rollout_ratio.html

The old standard oneway bearing is not very good, the new kits come with an extra HD unit and i sell them as well. I went through the entire season last year with one bearing, I have found that kyosho ball dif grease works the best.