a scale cub is what many concider under-powered..and it really is.. the first full scale cubs had only 60hp and were later fitted with engines that went up to 150hp for bush flying!

if you want short take offs add a big motor!! (call it a semi-scale bush plane and put some large 4inch cub tires on it!!!)

a new .70 is more than plenty for the cub but think about this..


while over powered this is what i would do..

add a saito .82 and buy a set of the floats for your plane as well.. the .82 will have the needed muscle forfloat flying can spin a big prop for added thrust for really short tak-offs cost is not that much diffrent

the .82 is also a great motor for larger planes as-well-as small aerobatic planes

with the added power of the big motor flying thecub and its quirkiness is deminished to a point..

but remember to THROTTLE BACK. it will fly around all day at 1/4 stick or less(without floats)

here are a few pics.. my 1/3 scale balsa usa j-3 with a 3w 85b2 cs twin! (non-scale knife edge flight with floats is possible)lol and the 1947 full scale j-3 n63061 (short take off , one float out, glassy water on rotation! flown by me)