RE: OS.15 CV-A or OS.25LA ???
Thanks for all recommendations.... maybe I’m going to keep the OS.15 in it and change nothing. This weekend, we have a Fun-Fly, this is why I want to change the engine, I want more speed... but I don't want to spend 3 or 4 hours to rebalance and fit everything together just for a little amelioration. The OS25LA cost nothing and I can have it now, other engine need to be ordering.
I will only change my 10% nitro fuel for 25% and retune the pipe. Maybe I will saw a difference. Yes, I no 10! [&:], but with 10% nitro I can fly full throttle for 4 minutes on 4oz tank, and 25% less than 2 minutes!
Next project:
Shrike 10 with a .25 in it, and try to make it light weight!
I’m starting to like these small and fast planes.