In general the plane will fly within the recommended engine range.

I however was allways taught that chosing an engine in the middle to upper end of the range was the way to go.

The smallest recommended engine would be powerfull enough to just get it airborne and putter around.



The LT-40 is a good trainer with a wing that generates a lot of lift, why don't you try it and see for yourself how you like the performance.

Some people think a .46Fx on an LT-40 is overkill others don't. It's really a matter of flying style and skill. Lots of pilots today rely on flying off the engine instead of the wing. nothing wrong with that but it does lead to the misconception that a good flying aircarft has to have a power to weight ratio of better the 1:1