RE: noise
kevin
Thanks for the quick reply
If I was building this bird I Could have planed for snuflers as it was I had to do a lot of hack and wack to get what I have, and did not want to get in to the main fuse structure (see in cluded pic ) I cant go any bigger in Dia on the can, but could go wider by at least 1/2 each side. I do under stand about props and carb noise, I think if I can get rid of the sharp crackle from the exhaust tubes I can get buy. as I mentioned I have tried the silicon tubing and for what ever reason it works and I think it would work better if I could find some that wouls give me a tight fit in the tubes it did coast 50 RPM's and it only reduced the ID to !/2 also on the ground engine only varied about 5 deg's F using a hand held I/R unit with or with out plugs
The bird is a 1/3 Weeks Special so it has a wide front
Cheers Bob T and thanks for your comments