RE: Do i use a 63 or a 110
I am no expert on 3D... but I know the YS 63 flies a 6 pound Pattern airplane with very good vertical. It is a perfect match.
But for 3D... The YS 63 would be good for a 4 1/2 to 5 1/2 pound 3D airplane.
And I would think a YS 110 would over power a 6 pound airplane.
I have always said to myself... why doesn't YS come out with an 80 size 4 stroke airplane engine?
(this would be a great for a 5 1/2 to 6 1/2 pound 3D airplane)