Didn't know YS made a .46 2-stroke.


Buy the TT or get a Magnum. I have owned a TT Pro 46, an OS 46FX and a Magnum 46.

The Magnum was purchased recently for a pylon racer. It ran like a raped ape right outta the box. Ran 2 tanks through it at the field and flew the snot out of it. Tunes easy. Holds a needle setting--I don't have to fuss with it more than a click either way from day to day--depending on humidity and barometric pressure on that particular day. Same as any other good engine.

For my money, I'd get the Magnum again in a heartbeat. OS is overpriced. They run good, but they are overpriced when you can get the same performance from a different engine for 40% less cost. I haven't bought an OS in 5 or 6 yrs. Never will again.

TT is good too. They are ALL good engines. Run right outta the box.