tuned pipes
Trying to get my first tuned pipe working. Does anyone know of a good website for tuned pipe issues?
I have a Mecoa .46 with a macs 1140 tuned pipe and 10 x 6 prop.. stock muffler gave me 12,900 rpm, tuned pipe gave me 14,200. Nice improvement but the plane still seems to flys at the same speed. I know someone is going to say how do you know. Well I expected a big change due to the increase is rpm but level flight seemed the same and it just didnt sound like it was on the pipe.
I have some issues with the needle valve adjustment that dosent seem right but since this is my first pipe and no one at the field has used one before, I am kinda the G-pig for this project.
Some info is, I am at 11.5 inches from the glow plug to the first widest point in the pipe. I have my fuel tank pressure nipple at the widest part of the pipe.
Macs website is useless for tips or help.
Any help is apreciated.
Larry