I never understood why the Wankel never caught on for motorcycle use. On paper it's an ideal motorcycle engine, fast reving, high HP, lightweight, compact. Maybe the rotational torque couldn't be dealt with, I don't know but I think it would be worth a second attempt.
I'm pretty sure it didn't catch on for cars because it was difficult and expensive to rebuild, once it would wear out, it was a throwaway. I don't know how the newer Mazda rotaries are holding up
Last edited by ray h; 10-13-2012 at 08:18 PM.