Most of you are using a 90 cc radial. I've seen mention in the thread of some UMS radials also being used. Do any of those using the UMS radials have them flying?
If so, what are your opinions on them? As good as a Moki or Saito?
I'm currently building a Hanger 9 mustang but keeping an eye out for a 1/5th 190 to go with it and eyeing the UMS engines as possible power.