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PT: Exhaust additional silencer

erik

Well Known and Active Website User
VOC Member
I bought from armours an additional silencer for my rapide because with the spiral baffle silencer it is to loud. Has anybody tried this before? Erik
 

oexing

Well Known and Active Website User
VOC Member
I´d be very interested in your findings with the Armours type. Is it stainless with absorber damping by rock wool ? That is what I´d do with it if otherwise . I do have some self-modified silencers on the two Horexes - well - just acceptable , even for our MOT testers. But then, there are two of these on the 460 and 600 cc singles.

Vic

DSC00013.JPGtzit.JPG
 

erik

Well Known and Active Website User
VOC Member
I will do Fotos of this silencer. Maybe you can fill it with rockwool?
 

oexing

Well Known and Active Website User
VOC Member
Vincent, I had these in Hoske megaphones many decades ago, not very effective and the sound is not what I´d aspire today. In fact, some new Käfer dampers still on stock in my collection of old iron. But no, a straight through with rock wool is what I´d want - and did on the Horexes.

Vic
 

Vincent Brake

Well Known and Active Website User
VOC Member
i had them in my old BonneVille...
but threw them out, it was really the sound of a Kaefer...
nowadays i run Armours or VOC ones with wool in them, loud on full swing silent to pass horses.
 

vin998

Well Known and Active Website User
VOC Member
VOC Forum Moderator
I have been using Armous chrome silencers on several Vincents over the last 25 years and they work fine. The oldest one is still good chrome after 25 years of abuse. They appear so be some sort of baffle absorption type which may have rockwool in them but its difficult to see exactly. Hold them up to daylight and you can see straight through but not the full diameter of the ex pipe. Loud on a single but on a twin remarkably quite. In saying that when I fitted one to a Comet it helped with performance as it wasn't restrictive at all.

Simon.
 

erik

Well Known and Active Website User
VOC Member
This additional silencer fits the original one but not the spiral baffle one from the spares company.The end tube is to narrow.But the straight through is no problem from the spares company.How it works I can not tell you,I havent started the engine ,yet. Erik
 

erik

Well Known and Active Website User
VOC Member
The silencer is very quiet and restrictive.No power delivery.I opened the silencer by Drilling 60 holes of 6mm Diameter in the perforated part and one hole of 6mm in the closed end. The Sound was okey but I will ride the bike tomorrow.
 

Rixon

Well Known and Active Website User
VOC Member
I have been using Armous chrome silencers on several Vincents over the last 25 years and they work fine. The oldest one is still good chrome after 25 years of abuse. They appear so be some sort of baffle absorption type which may have rockwool in them but its difficult to see exactly. Hold them up to daylight and you can see straight through but not the full diameter of the ex pipe. Loud on a single but on a twin remarkably quite. In saying that when I fitted one to a Comet it helped with performance as it wasn't restrictive at all.

Simon.
As I've recently mentioned on another thread, the chrome silencers Armours currently supply are not straight through. They have a baffle plate inserted. See picture.


20200617_140216 (2000x1500).jpg
 

Rixon

Well Known and Active Website User
VOC Member
No doubt.

But then you're left with a straight-through, overly noisy silencer that doesn't have any absorption material.

Which is where we came in ;)
 

Rixon

Well Known and Active Website User
VOC Member
I bought from armours an additional silencer for my rapide because with the spiral baffle silencer it is to loud. Has anybody tried this before? Erik
If your silencer is stainless it will be an absorption type with sound-deadening material. If it's chrome it will be as per my picture above and will not contain any absorption material.
 

vin998

Well Known and Active Website User
VOC Member
VOC Forum Moderator
As I've recently mentioned on another thread, the chrome silencers Armours currently supply are not straight through. They have a baffle plate inserted. See picture.
Just looked at the Armours silencer on my Shadow and your right it has the same baffle plate which the older ones didn't. I put an enderscope down the tail pipe and the baffle plate is actually in the larger diameter area by approx 3/4" and not across the tail pipe section. Also the baffle plate is at an angle and only tacked on at one side so gasses can go round it. So its not as restrictive as it initially appears. My Shadow goes very well with a bit of a crackle to the exhaust but not overly loud and it certainly doesn't strangle the bike.

I couldn't get the enderscope round into the larger diameter area of the silencer so I don't know how that area is constructed.
 

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