RE: YS .80ST Heli engine for pattern use??
Hi Flywilly and Monkeybone;
I'm the one with the Ys .80...
It worked so well that know I am using 2 Ys 91ST rigth now.
First one replacing the Ys 80 in my WB-60
Second in a Synergy 90 3D (Replacing a YS 110)!!!
And let me tell you where I live 8200 ft ASL nothing runs like them, smoooth and powwwerfullll!!! with the best thortle response you can imagine.