Was wondering if someone could help me out.
Im looking at an O.S. FS-91 (I'm a fan of O.S. engines) for the powerplant. Ive been doing some research on this airplane and the plane is modelled around the Saito FA-82, so I believe. The O.S. is around 5oz heavier than the Saito. Is there any problems with the O.S. 91 in the airplane? I believe the mount has to be modified to fit the crankcase? Is there anything else i.e. mounts, weight etc? I dont want to have to add weight to get the CG right. And what is the performance of this engine in this airplane? mainly hovers and how it pulls out?
Or an equivilent O.S. ie FS-81a.
Any help with this setup and/or pics would be greatly appreciated.

I flew mine with an ASP 80 4 stroke, basically similar to the OS 91 in weight and size, but not the power. Eventhough it flew quite well, if I was to do it again I would go directly to the 91. I changed my engine mount for that so it was not a big deal. I now have a Saito 91 which I may get either the Showtime 50 again go get an X50 Funtana for it. Help this helps


Wilki