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Gentlemen:
After 160 hours, I am working on MORE POWER again. I took off
the home-made muffler, and had the local muffler shop make me a 2 into 1
straight pipe so I could get an idea what the back pressure was costing
me.
First off, it is so loud (just like others have reported) that I
could barely hear the radio over my ANR headset! I think an hour
at full throttle would make you crazy.
Static rpm increased only by about 50 rpm, but on the top end, it
made a large difference. My normal WOT true at 3000 msl is 180
mph. With the straight pipes, it was 206 mph! Look out
Tracy!
Muffler is back on, and the intake is the next project. Need
to make it more like the ones that work. (Tracy, Ed, etc.) I
keep hanging that turbo on there, but it needs about a 2 inch spacer
between the manifold and turbo to clear everything. I am not sure
I want 35 lbs hanging on the side either.
Bill Eslick
"Award Winning RV-6R"
Sun N Fun 2003
Bill, Have you tried 'straight through'
mufflers? I have two in series on my RV6A with ~32" before the
collector. Max airspeed on the ASI on a cool day at 2000' is
200mph. (7200 RPM) Max at 10,000' on the ASI 135mph.
Why don't you guys use knots? Its a lot
easier!
Ian Beadle RV6A. |