Dave,
I have talked to a guy w/ a 91FX w/ moosecan on his UCD. His flight performance was unbelievable. I think he said he is turning a 14x6 at almost 11,000. He said his pipe was around 7 1/2" centerline. And it looks like he is using a 6oz. moosecan w/ 1/4" Diameter stinger.

Also Dave, I am fixing to start building me a moosecan for my 40fp. I have read in other post that you love your 40fp w/ moosecan. Can you tell me what your pipe length and can size is. For my ST45 I have it at 4 3/4" and 6oz can. Since the 40FP is a smaller motor, I didn't know if I need to look for smaller can, or run a shorter pipe.

Thanks,