ORIGINAL: riot3d
>> I looked at the engine mount and I will need to move the YS63 back because of the prop hub position. If you think it would be okay then I will go ahead with that.
I don't know what kind of an engine mount came with the plane. Therefore, I do not want to comment on that.
The engine mount is phenolic and is bolted down on the rails of the fuselage. I made a template based upon the location of the thrust washer and the cowling. It looks like I will have to move it back about 3/8" which may work out since the listed wt of the the OS 52 Surpass is 434g (15.31oz) and the wt of my YS 63S is 460g (16.1oz).