ORIGINAL: rambler53
I haven't seen a Fox engine at the flying field in 15 years. I'm surprised they're still around. Wonder why they don't outsource? All my Super Tigre's I flew were Italian made by the way. Awesome engine. I wouldn't take a trash can full of Fox engines for one Super Tigre S 45 personally.
The S-45 is no longer made, but the GS-45 is. Good engine but Idoubt the China version is of the same quality. The Fox 46 is likely more powerfull, same power as their 50 but guessing it is more of a revver. I know RC Reports gave it rave reviews and said its power was up there with Rossi's and the ilk, especially when useing a tuned pipe. Their engines have been given a number of refienments in the last decade or so, the latest being a twin needle carb, of which the main needle has no detents. Instead it has a teflon bushing used to seal it and add friction, preventing the needle from backing out.
http://www.foxmanufacturing.com/imag...carburator.jpg