Building a sig 1/4 scale cub and have an o.s. 91 4 stroke engine laying around and was wondering how good it would fly this cub, anybody flying this combo?

Yup, I got a Saito 91 in my Sig 1/4-scale Cub. No verticals with endless rolls, but more than enough power for flying a 14lb floater like the Cub. I do most of my flying at partial throttle, and only use full throttle for take-offs and loops.

dg.