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Exhaust silencer mounting
CosKev3 - 15/10/14 at 12:01 PM

I've modified a Westfield 5 inch silencer to fit onto my Mac1 and am pondering how to mount it

Westfield use a flat piece of steel bolted to the exhaust clamp that holds tailpipe to silencer,looks crap and I've also shortened the tailpipe and welded it on rather than have a clamp on it.

Was hoping to use a strap type mount like bikes use,but can't seem to find any that go big enough for a 5 inch silencer,needs to be 410mm long.

So pics of what people have done would be appreciated please

whitestu - 15/10/14 at 12:58 PM

I made a similar strap out of mild steel bar that I bent and shaped to fit round the Westfield silencer and painted to stop it rusting. I tried aluminium initially but it didn't last long before it cracked.

I also have a second mount on the exhaust clamp.

Stu

rash12 - 15/10/14 at 03:06 PM

I brazed a strip of stainless on the underside of mine then used the usual bobbin mount but I have a heat shield around the silencer so its not seen anyway

[Edited on 15/10/14 by rash12]

CosKev3 - 15/10/14 at 03:39 PM

quote:
Originally posted by whitestu
I made a similar strap out of mild steel bar that I bent and shaped to fit round the Westfield silencer and painted to stop it rusting. I tried aluminium initially but it didn't last long before it cracked.

I also have a second mount on the exhaust clamp.

Stu


Ah right cheers,what size bar did you use? And was it easy to get nice and round?

quote:
Originally posted by rash12
I brazed a strip of stainless on the underside of mine then used the usual bobbin mount but I have a heat shield around the silencer so its not seen anyway

[Edited on 15/10/14 by rash12]


ok cheers. Does brazing use less heat than welding?
As I've welded a stainless silencer before and it set the wadding on fire inside!

whitestu - 15/10/14 at 04:15 PM

quote:

Ah right cheers,what size bar did you use? And was it easy to get nice and round?


I'd need to check but I think it was something like 1mm x 20mm, and yes it was fairly easy to shape it on the exhaust, then bend in the vice to form the ends that the bolt goes through.

As long as you get it the right length it pulls into shape when you tighten it up.

They sell the stuff in B&Q.

Stu

renetom - 15/10/14 at 04:31 PM

Got stainless silencer strap on ebay, bent it to suit

Can fix
Can fix

Strong supports the silencer & easy to change.

Good luck
René

CosKev3 - 15/10/14 at 05:06 PM

quote:
Originally posted by whitestu

I'd need to check but I think it was something like 1mm x 20mm, and yes it was fairly easy to shape it on the exhaust, then bend in the vice to form the ends that the bolt goes through.

As long as you get it the right length it pulls into shape when you tighten it up.

They sell the stuff in B&Q.

Stu


Ok cheers will give it a go

Have you put any rubber under it like the bike ones have?

quote:
Originally posted by renetom
Got stainless silencer strap on ebay, bent it to suit

Strong supports the silencer & easy to change.

Good luck
René


Cheers,I can't see any on E-Bay or Google search that are long enough for a 5 inch silencer?
Needs to be 410mm,the biggest I've found ready made are 390mm.

40inches - 15/10/14 at 06:21 PM

These are the nearest I can find.

CosKev3 - 15/10/14 at 08:25 PM

quote:
Originally posted by 40inches
These are the nearest I can find.


Thanks

Will contact them regarding inner sizes, presume where they state 'outer circumference' they are talking about the outside of strap?

rash12 - 16/10/14 at 07:23 AM

yes brazing uses slightly less heat than welding but I had no tig or mig that's why it was brazed but if you have access to a suitable welder just weld a bracket to your silencer personally I think its neater than a strap round it