Timmer01,

I fully support your effort to mount a tuned pipe on your Fox 46BB. My next project up is a Lanier Shrike 40 and I have a Fox 46BB and a macs header and pipe to mount to it. I would be most curious to see the data around the tuned pipe. David Gierke, (spelling)review of this engine several years ago in a model mag said it was "timed" for a pipe. The Macs products website tells you how to tune a pipe. They also have some charts there that show you typical gain. A Fox 45 is listed as having a 14250 rpm with open face (no muffler) and 15,100 with pipe. The Fox 45 is known to be a mildly timed engine, the 46 is more aggressively timed and should respond better to a tuned pipe.

[link=http:///www.macspro.com/tuning.asp]macs tuning info[/link]

Charley,
what is the conception?

Scott
[link=http://www.fayettevillercclub.com]Fayetteville R/C Club[/link]