You got it... It's all good. This plane looks and goes great with just about any engine. I just like 4 strokes at the moment and it’s really user preference.I don’t think I’m putting extraordinary loads on the 115 with the 13x11 and fuel I’m running.However if I use the 13x11 with %10 nitro the engine would struggle and potentially overheat.It’s hard to explain, but I feel that with the %30 nitro, the Saito really likes the high nitro and runs better/cooler and has better throttle response/top end.I don’t run Cruelpower because I blew a cage and let the rear bearing loose on a Saito 100 in a revolver.Luckily the engine was under warrantee, but fuel is a different subject. Of course if you run your Saitos with a larger diameter prop and fly scale like with a Piper Cub or something, you’d most likely get better engine life.But where’s the fun in that?I’m waiting for a house payment to free up and back orders to be filled in order to try the new YS 115.I haven’t tried a YS yet, but everything I’ve experienced with my Saitos and have read about the YS leads me to think that the YS is a stronger engine line than the Saito.Strength-wise I say it’s YS, Saito then OS.Ease of use I say it’s OS, Saito then YS.Also my Saito engines love a Perry pump.By the time you add up the price of the pump and the engine, it’s running close to a YS. Hmmm.
“What a great hobby…”