This seems to have gone well off course!
Going back to Michael's original question, I have always thought of these as `Triumph mutes' from the 60's. I seem to remember a similar question being raised on here a long time ago.
Never tried one in a Comet, but we fitted one in the extended straight through pipe on Dave Butlers Parkin Twin back in 1970 to ride it up to, and thrash around the IOM during the TT that year....It made no perceptible difference to the noise/sound, so it was removed. Then again, a twin is much quieter on a straight through siamese pipe than a single anyway... Don't know why.
Probably wouldn't quieten a Comet much anyway. There do seem to be some `more modern' equivalents out there which may be worth trying.
Happy New Year,
Ray
Going back to Michael's original question, I have always thought of these as `Triumph mutes' from the 60's. I seem to remember a similar question being raised on here a long time ago.
Never tried one in a Comet, but we fitted one in the extended straight through pipe on Dave Butlers Parkin Twin back in 1970 to ride it up to, and thrash around the IOM during the TT that year....It made no perceptible difference to the noise/sound, so it was removed. Then again, a twin is much quieter on a straight through siamese pipe than a single anyway... Don't know why.
Probably wouldn't quieten a Comet much anyway. There do seem to be some `more modern' equivalents out there which may be worth trying.
Happy New Year,
Ray