I'm about to pull the trigger on the CMPro 91" J-3 Cub ARF.

I see posts where the recommended engines are over kill. I have a saito FA 91 on C&H SparK ignition that is putting out about 6% more power than stock glow ignition & I am looking for an IMAA legal high wing ARF to be powered by it.

I also have an FA 150 on spark that's putting out nearly what a 180 does on glow, but it would probably be overkill. It would still be a plan "B" if the 91 is inadequate.

W/the 91 would I be better off W/the Great Planes 1/5scale 81" J-3 Cub?

I would like to keep the engine (inverted) within the cowl if possible.


EDIT: I found that the 90" Great Planes J-3 Cub KIT is listed @ 9-12# max W/.70-.91 4-stoke recommended.

The more I investigate, the more it seems that CMPro is overpowering W/its recommended engines.