Baffle Wrap

The space between the tube and the can should be stuffed with silencer wadding. It will make it quieter.

 

In a word yes @dirty big hands

longer response.... A mate recently purchased a new can for his 675 str.
Straight through with an exit diameter of about 80mm was just ridiculous in noise levels. We made a baffle up and that knocked the edge off but not enough.
I had some spare new offcuts of "cotton wool" baffle sheet used for my last 2 stroke silencer repacking job.
He wrapped the new baffle with the wadding and I'd advised him to wrap stainless locking wire around the wadding for ease of placing and removing the baffle which he did.
You certainly wouldn't class it as too quiet now but it solved the issue and made it acceptable in my opinion for road use.

Note. When he hit the rev limiter in about 3rd the other day in front of me I could clearly hear it above my str with twin Arrow cans on

 

You hum it, I'll play it..

 

@dirty big hands try something like this


https://www.ebay.co.uk/itm/Exhaust-...p2349624.m46890.l6249&mkrid=710-127635-2958-0

 

Double post ... page was stuck

 

3db is quite a lot if those numbers are reliable

10db if I remember correctly is twice the volume (energy) its a strange logarithmic scale which takes some understanding to reality values

 

An increase of 3db is doubling of intensity so a decrease of 3db is a halving of intensity

 

Thanks, I knew it was something like that, either way 3db is a worthwhile gain I'd say.