Avenger1
Which YS63 or 53?

I am leaning toward either of the YS's. Doubt there is much difference in their weights. Forgot to mention I have a Saito 56 as well. This may lightn the frame up more. Not sure which of them is the lightest.

I've ruled out the .91. I've got 3D planes for that. Not sure if the control surfaces are big enough for serious 3D anyway. I've ruled out the 2 strokes as well. Don't believe they'll give me the pow seek.

I've started to build it and must say of all the ARF I have seen, this one is really nice. Gotta do something with the engine mount. It is mounted for a 2 stroke in a 45 degree aspect. Looks like an inverted job for the 4 strokes. May be difficult to find the center of the firewall. Hopefully the screws on the mount are parralel.