RE: Do I need Twinsync
N2ryD,
I have a Futaba 10C radio and I mixed the throttles in the transmitter. Doing this the syncing of the engines was a piece of cake because you adjust each engine seperately. I broke both engines in on a test stand (OS25LA's) and then mounted them on the plane...a Hobbico Twinstar. Then you can adjust each engine until you get the same RPM +/-. It works great and you don't have to buy and install extra hardware. Mixing instructions for this are on Futaba's website under mixing for the 9C but it works for a variety of radios. It's fun to do!
Andy