Mark wrote- >I've looked for the perfect mufflers for my Corvair engine for months >I thought I'd check out stock VW air-cooled Beetle tailpipes. >they will not be tested for performance until later on this summer
See, I told you this was a good idea ;o) We ran these on Paul Martin's KR2 during his taxi tests using simple hose clamps to hold them in place (1835 VW) and did some checking with a sound meter. They do attenuate the exhaust note somewhat, but it was already considerably less audible than the prop noise in all regimes involving engine speeds above about 1800 RPM. I can't see that they would do much to reduce performance, since they look like a straight window to the world as the exhaust sees it. Performance testing would be very interesting! And regarding posting to the list, I would ask users like Dan and others who don't seem to be getting through, to check everything carefully and make sure it's broke before we fix it. I hate moving and changing (when it comes to email lists). As an experiment, I'll post this email both by replying to the list (digest) and by posting directly to the list. If my post shows up twice... sorry! Oscar Zuniga San Antonio, TX mailto: [email protected] website at http://www.flysquirrel.net _________________________________________________________________ STOP MORE SPAM with the new MSN 8 and get 2 months FREE* http://join.msn.com/?page=features/junkmail
