Around 4/5000 rpm. I've recently packed some extra wadding in it but annoyingly it still gives off this really annoying buzz especially changing down from high revs. I know it's not the end of the world but me with my OCD and that fact that I hate rattles and knocks really bugs me. How can I pack the can so that it won't buzz?

It may be the internal perforated tube that's slightly loose.

I think you're right....what can I do to fix it?

Remove the tube and gently persuade it and where it locates with a hammer so that you have a tight fit when you reassemble it.

I was just thinking that...I will also plaster it with silicon sealant and pack more wadding in. Thanks

Is the end screwed or riveted on....these can often resonate at certain frequencies...worth checking.

One end is Allen keys the other is riveted, I now think the noise is definitely the inner tuber being a little loose as mentioned earlier.

mine sounds like a swarm when really hot....


i occasionally have to stop and nip the bolts up a bit while its still hot.... tis ok then for a for more miles