ORIGINAL: radioflier
I've been flying an OS .46SF off and on now for about 10 years and am wondering how it compares to the newer 46's, such as the OS 46AX.
Just stick with the 46SF, it is a better engine than most of today's .46s. I have a .46 ax and it is also a real nice engine, but if I had a 46SF I would just stay with it. There is not that much difference.