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What Would You Pay #755963
11/13/18 9:57 pm
11/13/18 9:57 pm
Joined: May 2007
Posts: 10,701
Pennsyltuckey
ricochetrider Offline OP

Moto Mojo
ricochetrider  Offline OP

Moto Mojo

Joined: May 2007
Posts: 10,701
Pennsyltuckey
For a pair of original Dunstall Decibel silencers?

Saw a couple pairs on eBay, one looked to be in decent condition- the seller had a "buy it now" price of 500.00!
Somehow I've always had this notion that it'd be great to have original Decibel silencers on my bike.... not sure how far I'm willing to go to achieve this "pipe" dream.

Thoughts?
Comments?


"It is no measure of health, to be well adjusted to a profoundly sick society."

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Re: What Would You Pay [Re: ricochetrider] #755982
11/14/18 1:55 am
11/14/18 1:55 am
Joined: Jul 2001
Posts: 13,053
Central Virginia
Lannis Online content

Well'ard Rocker
Lannis  Online Content

Well'ard Rocker

Joined: Jul 2001
Posts: 13,053
Central Virginia
I'll be interested in seeing what Norton pipes go for ... the internal baffles on the near-side pipe on my Norton have come apart, and there's no fixing them, so I'm going to need a new pipe or two pretty soon ....

Lannis


I stopped believing for a little while this morning. Journey is really going to be upset.
Re: What Would You Pay [Re: ricochetrider] #756022
11/14/18 1:25 pm
11/14/18 1:25 pm
Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
D
Dave Comeau Offline

Crew Chief
Dave Comeau  Offline

Crew Chief
D

Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
Last set of decent used dunstalls was $25 and came attached to MKIII commando pipes. Got them this spring at the British meet. Mufflers had a rust sheen to them which are cleaning up very nice using pure gum turpentine and (yes) paper towels as the polishing rag. Slow working but absolutely no scratching of the chrome. Hard to pass up for the price!
[Linked Image]


dynodave
BSA 3 1961-1963
Ducati 3 1992-2002
Norton many 1951-1975
87 Serv-Equip 100HP MC brake dynamometer,
Re: What Would You Pay [Re: ricochetrider] #756030
11/14/18 2:17 pm
11/14/18 2:17 pm
Joined: Feb 2007
Posts: 691
Ewing. NJ
E
edunham Offline
BritBike Forum member
edunham  Offline
BritBike Forum member
E

Joined: Feb 2007
Posts: 691
Ewing. NJ
Years ago, I had an original set of Dunstalls on a Triumph T140. The bike was louder with the Dunstalls on it than with no mufflers at all.

Ed from NJ

Re: What Would You Pay [Re: Lannis] #756036
11/14/18 3:12 pm
11/14/18 3:12 pm
Joined: May 2007
Posts: 10,701
Pennsyltuckey
ricochetrider Offline OP

Moto Mojo
ricochetrider  Offline OP

Moto Mojo

Joined: May 2007
Posts: 10,701
Pennsyltuckey
Originally Posted by Lannis
I'll be interested in seeing what Norton pipes go for ... the internal baffles on the near-side pipe on my Norton have come apart, and there's no fixing them, so I'm going to need a new pipe or two pretty soon ....

Lannis


Lannis, the Emgo megaphones are cheap. I found a pair on eBay for 179.00 But they're loud. I like the sound, personally, and I like the look of anything besides the typical pea shooters.
On the other end of the spectrum are the Colorado Norton Works reverse cone "pea shooter" style, polished stainless steel mufflers, at over 600.00 pair. I THINK they are made by Cone Engineering? But could be wrong there.

Dave... ACTUAL Dunstall Decibels mufflers for 25.00? HMMMM....... No dents, not rusted through... wow, score.


"It is no measure of health, to be well adjusted to a profoundly sick society."

Re: What Would You Pay [Re: ricochetrider] #756037
11/14/18 3:42 pm
11/14/18 3:42 pm
Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
D
Dave Comeau Offline

Crew Chief
Dave Comeau  Offline

Crew Chief
D

Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
There are at least 3 different, real, long dunstall mufflers. On my nortons they are quite reasonable and have a fairly mellow sound unlike the eBay fake dunstalls which are very loud. A friend has some of these on his unbalanced 850 and they are nasty IMO.
I have dissected them and plan to make some good stainless repops one day. Sourcing the correct stainless perf sheet metal for the tube is next on my agendia.


dynodave
BSA 3 1961-1963
Ducati 3 1992-2002
Norton many 1951-1975
87 Serv-Equip 100HP MC brake dynamometer,
Re: What Would You Pay [Re: ricochetrider] #756156
11/15/18 5:27 pm
11/15/18 5:27 pm
Joined: May 2007
Posts: 10,701
Pennsyltuckey
ricochetrider Offline OP

Moto Mojo
ricochetrider  Offline OP

Moto Mojo

Joined: May 2007
Posts: 10,701
Pennsyltuckey
Yeah mine (Emgo) are loud, after the top end job & going to unbalaced 750 pipes they got different and perhaps louder still. I'd love to find a solid pair of old Decibel mufflers.


"It is no measure of health, to be well adjusted to a profoundly sick society."

Re: What Would You Pay [Re: ricochetrider] #756168
11/15/18 7:46 pm
11/15/18 7:46 pm
Joined: Feb 2007
Posts: 691
Ewing. NJ
E
edunham Offline
BritBike Forum member
edunham  Offline
BritBike Forum member
E

Joined: Feb 2007
Posts: 691
Ewing. NJ
My extremely loud Dunstalls were purchased used in 1978. I remember because I put them on the only new motorcycle I have ever bought - a 1978 Bonneville. As I recall they were in nice shape and had "Dunstall" stamped on the side. Funny story. In 1978 my wife and I lived in a little place in the country (country for NJ anyway) at the crossroads of a little road and a much bigger road. We had a dog who liked to sleep in the sun. All kinds of bikes would roar by and she wouldn't respond. But she (according to my wife) would look up and jump up onto her feet all of a sudden. A minute later my wife would hear the roar of the Dunstalls on that Triumph, and 3 or 4 minutes later I would be home.

Ed from NJ

Re: What Would You Pay [Re: ricochetrider] #756182
11/15/18 9:06 pm
11/15/18 9:06 pm
Joined: Aug 2001
Posts: 2,361
Oztralia
R
Rohan Offline
BritBike Forum member
Rohan  Offline
BritBike Forum member
R

Joined: Aug 2001
Posts: 2,361
Oztralia
You can of course buy copy Dunstall Decibels.
They even have the red clusterpipes.
https://www.classicbikeshop.co.uk/dunstall-decibel-style-silencer-38mm.html

Someone mentions that packing them with stainless potscrubbers can tone them down, considerably.
And your baffling will never rust, at least !

Re: What Would You Pay [Re: ricochetrider] #756245
11/16/18 1:33 pm
11/16/18 1:33 pm
Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
D
Dave Comeau Offline

Crew Chief
Dave Comeau  Offline

Crew Chief
D

Joined: Aug 2001
Posts: 1,290
Hamilton, Mass. USA
Ed, If you say they were loud I would believe you but....
"My extremely loud Dunstalls were purchased used in 1978"

How used/abused were they?
If you punch out the perf metal disc (with a broom handle?) 10-12" from the entrance they will get loud.
My dunstall muffler balance pipe MKIII does not come even close to the harley's that go past my shop/house and I still hear them almost to my post office 1-1/2 miles away.

The chinese copies I have examined do not have an internal structure even close to a real decibel. It is no wonder they don't sound like the originals.


dynodave
BSA 3 1961-1963
Ducati 3 1992-2002
Norton many 1951-1975
87 Serv-Equip 100HP MC brake dynamometer,
Re: What Would You Pay [Re: ricochetrider] #756258
11/16/18 2:54 pm
11/16/18 2:54 pm
Joined: Feb 2007
Posts: 691
Ewing. NJ
E
edunham Offline
BritBike Forum member
edunham  Offline
BritBike Forum member
E

Joined: Feb 2007
Posts: 691
Ewing. NJ
Dave,
They looked very nice on the outside and they had the assembly of tubes at the rear. I never took them apart as I didn't see how at the time without ruining them. I suppose that they could have been drilled out before I got them. But I also recall other local British bikes with Dunstalls back in the day that were very loud. Based on my experience, I thought all the original Dunstalls were loud. Of course, perhaps all of the ones I heard had been drilled.

Ed from NJ

Re: What Would You Pay [Re: ricochetrider] #756411
11/17/18 9:37 pm
11/17/18 9:37 pm
Joined: Jun 2007
Posts: 6,156
Maui Hawaii
HawaiianTiger Online content
BritBike Forum member
HawaiianTiger  Online Content
BritBike Forum member

Joined: Jun 2007
Posts: 6,156
Maui Hawaii
How do you identify the original Dunstall Decibels?
This bike has what looks like those mufflers on them. The bike is loud but I think no louder than peashooters. Or just a little.

[Linked Image]003

Norton N15 found in Hana, the jungle covered east side of Maui where few people live.

These have what looks like a welded seam near the end of the muffler where the ones linked do not.

I had a set of short Dunstalls on my Commando when I got it that were intolerably loud. I installed a very large washer at the end that made them more civilized.

We just powder coated these silencers on the Hana bike because the owner really likes the sound they have. I prefer the sound of peashooters myself. Only the ones that you can see through, though.

Cheers,
Bill


Bikes
1974 Commando
1985 Honda Nighthawk 650
1957 Thunderbird/T110 "Flying Tiger"
Antique Fans: Loads of Emersons (Two six wingers) plus gyros and orbiters.
Re: What Would You Pay [Re: HawaiianTiger] #756417
11/17/18 10:39 pm
11/17/18 10:39 pm
Joined: Aug 2014
Posts: 1,824
OZ
Triless Offline
BritBike Forum member
Triless  Offline
BritBike Forum member

Joined: Aug 2014
Posts: 1,824
OZ
Bill, I have a set of genuine Dunstall Decibels I bought in 1976 to fit on my '76 T140V, and about halfway along their length ( opposite side to mounting point ), they have " Dunstall Decibel Silencer" stamped in a bout a 1" diameter circle with the pat. number (1063409) and " Made in England" stamped within the circle.
That would denote genuine, I would think!

Re: What Would You Pay [Re: ricochetrider] #756689
11/20/18 5:41 pm
11/20/18 5:41 pm
Joined: May 2007
Posts: 10,701
Pennsyltuckey
ricochetrider Offline OP

Moto Mojo
ricochetrider  Offline OP

Moto Mojo

Joined: May 2007
Posts: 10,701
Pennsyltuckey
Those look pretty much exactly like the Emgo megaphones I have on my commando, Bill.


"It is no measure of health, to be well adjusted to a profoundly sick society."

Re: What Would You Pay [Re: ricochetrider] #756713
11/21/18 12:51 am
11/21/18 12:51 am
Joined: Dec 2009
Posts: 223
Michigan, USA
H
henryanthony Online content
BritBike Forum member
henryanthony  Online Content
BritBike Forum member
H

Joined: Dec 2009
Posts: 223
Michigan, USA
All depends on your level of disposable income and you goals. My Bonnie came with those disgusting shorty silencers. Replaced them with a pair of originals - showing their age - for $50 from a friend who owed me a favor. I am happy with them because they were cheap and my bike is showing her age and my disposable income has been disposed of. beerchug

Now, I would love a pair of original Dunstals. Can't afford them now but if I could, I would snap them up in a heart beat. Would love to hear how they sound. Over time, I have gotten into original stuff over imaculate restoration. Damn, I just decided to replace my new repop headlight with the original Made in England one with a thousand rust volcanos ready to erupt.

Re: What Would You Pay [Re: ricochetrider] #756799
11/22/18 2:58 am
11/22/18 2:58 am
Joined: Apr 2014
Posts: 197
bac o burk qld
dommie90 Offline
BritBike Forum member
dommie90  Offline
BritBike Forum member

Joined: Apr 2014
Posts: 197
bac o burk qld
I bought a set of crappy genuine dunstalls at a swap meet paid $50 for them,i had them rechromed for $100 but the dunstall stamp was polished, off most annoying
baz

Re: What Would You Pay [Re: ricochetrider] #757137
11/26/18 3:08 am
11/26/18 3:08 am
Joined: Dec 2017
Posts: 2
United States
M
Mwood7800 Offline
New poster
Mwood7800  Offline
New poster
M

Joined: Dec 2017
Posts: 2
United States
I put a set of the commando specialties Dunstall replicas on my 750. Best money spent. Great chrome, cool mellow sound, quiet. I might take the peashooters off my other bike as there too loud. Can’t beat the 179$ price


Mwood7800

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