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Just bought a YS 53 FZ and a Saito 65 four stroke.
What are the performance characteristics? Best applications for each and fuel choice? I have a Fun Tiger Profile with a Saito 91 and to me it seems overpowered. Would either of these engines work well on this plane? I really like four strokes and would like to stick with them other than on my trainer which has an OS 46 fx. Also, can I use the same fuel in both the Saitos and the YS? Thanks for the replies. Bruce