ORIGINAL: jpinegar
Hello,
I am considering putting a 90 size engine into a 40 size plane. I understand that I will have to counter balance the tail to ensure the weight and balance stays where it should but I am hoping for some advise. Has anyone done this before? Any thought and suggestions would greatly be appreciated. Thank you!!
I have a YS 1.10 in a generic .40 size trainer with two bays lopped off each wing. This aircraft was assembled to compete in our local trainer pylon race series. It's good for about 115 mph in level flight and hardly slows down when put into a vertical upline.
As well as moving everything (battery, receiver etc) as far aft as possible, I put the tank on the CoG. The CoG is a constant 10mm further forward than the recommended location.
It flies so sweetly at part throttle that I can still use it to train beginners with the buddy box.