in engines with more rotors like the 4 rotor 787B, how much more likely is the e-shaft to warp at high rpms? do you think it would be worth it to put it in your car if you had one and race it or would you have to many problems with the eshaft?

 

The R26B uses four shaft bearings, which cut flex down a lot, and according to Jim Downing can spin to well over 12k RPM (intake restrictors aside). If you were to develop your own 4 rotor, it'd probably have three bearings, and would likely be subject to approximately the same flex-related limits as the 13B.

Brandon
BR7 Racing