I don't know what I'll put in it yet? I've been flying a friends ucd with a new YS .91 The engine is a dissappointment to say the least. Won't stay running and very inconsistent. Back in my pattern days we ran the 1.20 till the cows came home and it was fine. This .91 thing is a bummer.
I am leaning towards a 2 stroke. When I first started flying profiles, I dialed them in with the Cline regulator and perry carbs and had a blast. Have one left now to stay nimble. Good therapy you know!
Initially I'm going to use what I have laying around in the shopto keep expenses to a minimum. I've seen a couple of inquiries about flying this plane with a .61 What are the finished weights and flying reports with that size engine? Take care_bob