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inserts for tt pipes to comply with D.B. level #144138 06/29/08 11:28 pm
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dan charles tr6r Offline OP
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Are there inserts for tt pipes to make them queiter? I have a 70 tr6 with tt pipes. i want to know whats out there for baffes/inserts. I may go stock eventuley,for know i have to deal with a fix it ticket.whats the best way to shut up the load noise? thank you. Dan

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Re: inserts for tt pipes to comply with D.B. level #144140 06/30/08 10:49 pm
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az-idea Offline
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Brown Owls Post Ref.is right on..Slash cutting will reduce some of the concussive Bark..possible Noticeable Throttle improve too..Thumbscrews even moreso on Both counts..Very easy rewards..

Re: inserts for tt pipes to comply with D.B. level #144141 07/01/08 12:18 am
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Steve Erickson Offline
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I've seen old VW Bug baffles used.

Re: inserts for tt pipes to comply with D.B. level #144142 07/01/08 12:30 am
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Re: inserts for tt pipes to comply with D.B. level #144143 07/01/08 1:00 am
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Steve in Tulsa Offline
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We used to call the Whitney baffles "can opener baffles" They work fine and are a quick fix.


Steve in Tulsa
Re: inserts for tt pipes to comply with D.B. level #144144 07/01/08 4:08 pm
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GP Motorcycle Offline
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I installed a pair of the can opener type baffles in my '60 TR6 last fall and did not notice any change in performance or noise level. Well it might be slightly quiter but not enough to really notice.


74 T140V
60 TR6B
A famous Triumph dealer once told me 'Never let an electrician rewire your bike'. Truer words were never spoken.
Re: inserts for tt pipes to comply with D.B. level #144145 07/01/08 4:43 pm
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Bret Edwards Offline
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Supertrapp makes a shorty slip on type baffle/muffler that fits over the 1 3/4 TT pipes. I have a set on a 1971 project I'm working on.

[Linked Image]


Cheers, Bret @ Glass from the Past
Re: inserts for tt pipes to comply with D.B. level #144146 07/01/08 6:07 pm
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John Healy Offline
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Bret:

From experience you will want to be sure the exhaust outflow clears the tire. On disc brake models it also must clear the rear master cylinder.

I really like these short version of the Super Trapps!!
John


Re: inserts for tt pipes to comply with D.B. level #144147 07/01/08 7:06 pm
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Bret Edwards Offline
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Quote
Originally posted by John Healy:
Bret:
From experience you will want to be sure the exhaust outflow clears the tire. On disc brake models it also must clear the rear master cylinder.
John
Agreed John, thanks.
I once had these pipes on a 1965 T120 as shown in the photo below. I shortened the header pipes by the same amount that the muffler would have added to keep the original header length. This also allowed the muffler clamp to do double duty as a mounting bracket as it put the clamp/brackets in line with the center stand mounting holes. The outlet end was about 2 inches from the tire on the '65. On the '71 project I'll be using the original conical rear hub, so there will be no hydraulics to overheat. As shown in the photo in my previous post, the OIF chassis gives these same pipes about 4 inches of tire clearance. I've added a better shot of the Supertrapp outlet for clarity.
[Linked Image]
[Linked Image]


Cheers, Bret @ Glass from the Past
Re: inserts for tt pipes to comply with D.B. level #144148 07/02/08 12:02 am
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leon bee Offline
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I wonder how a guy who lives out in the sticks could get a couple of those little supertrapps?

Re: inserts for tt pipes to comply with D.B. level #144150 07/02/08 3:04 am
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Bret Edwards Offline
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Leon Bee,
A quick Google turned up this. $104 plus shipping will get you a pair. Mine look different because I had my chrome guy polish the stainless inlet piece and end cap.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUP%2D344%2D1705&N=700+400410+4294843811+115&autoview=sku

BrownOwl,
I can't give you a performance comparison. My 1965 T120 actually had a 1973 T140 5 speed motor with 51030 Megacycle cams. But I never ran it without the Supertrapps to know if there was a performance difference. I can tell you it went like stink though! After building it I only put about 100 miles on it before taking it to a show where a guy made me an offer I couldn't refuse. I sold the bike with street pipes and mufflers, hence the old TT pipes and Supertrapps on the new '71 project.


Cheers, Bret @ Glass from the Past
Re: inserts for tt pipes to comply with D.B. level #144151 07/02/08 3:48 am
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Melbourne Metisse Offline
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My Métisse has a Unity 2-into-1 and short mega. The mega has a very basic single baffle and is a bit too noisy for my liking. So to dampen it down a bit I have made up a Dunstall-style baffle. I brazed it up from scraps of exhaust pipe and bundy tube (½" and 3/8") that are about 2" long. It's really taken the edge off the 'bark' of the exhaust note and given it a more mellow sound. I can't detect any change in performance.

[Linked Image]

Re: inserts for tt pipes to comply with D.B. level #144152 07/02/08 4:31 am
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leon bee Offline
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Thanks Bret, I better get me a pair.

Re: inserts for tt pipes to comply with D.B. level #144154 07/02/08 1:21 pm
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Melbourne Metisse Offline
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Quote
Originally posted by Brownowl:
That's a handy bit of work Metisse!
I was able to hide all the ugly stuff inside the exhaust! I painted it with heat resistant brake caliper paint but I figure its all going to be matt black soon enough...

Re: inserts for tt pipes to comply with D.B. level #144155 07/02/08 1:25 pm
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44Dwarf Offline
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The washer unit used to be sold under the name "SNUFF-R-NOT" as i recall.

Found one on eBay

http://cgi.eBay.com/ebaymotors/VESP...itemZ270251049986QQrdZ1QQsspagenameZWDVW

44


"Smok'in the competition NOT Tobacco"
"Transplant organs, Don't bury them!"
Re: inserts for tt pipes to comply with D.B. level [Re: Bret Edwards] #784003 09/11/19 8:09 pm
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Hap Shaunnessy Offline
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Bret,
Would you be able to post a photo or two showing the SuperTrapps and TT pipes installed on a bike? I'd like to get a visual of it before I invest in the same.

Thanks much,

Hap


I'm just a dope...…...
Re: inserts for tt pipes to comply with D.B. level [Re: dan charles tr6r] #784016 09/12/19 2:29 am
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Mark Z Offline
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I have a TR5T (my son's) in my garage now, with TT pipes. We put in these six-inch perf-pipe inserts, and although I have no way of measuring, I think the noise level is quite acceptable. Maybe a 650 would be louder, I don't know. Sorry I don't remember where we got the inserts, but I remember they were inexpensive.


Mark Z

'65(lower)/'66(upper, wheels, front end, controls)/'67(seat, exhaust, fuel tank, headlamp)/'70(frame) A65 Bitsa.
Re: inserts for tt pipes to comply with D.B. level [Re: dan charles tr6r] #784043 09/12/19 12:38 pm
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Irish Swede Offline
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Triumph TT bikes were never intended to be ridden on the street. They are "competition only" bikes.

Why are you punishing yourself and the general public with no-muffler TT pipes?

Re: inserts for tt pipes to comply with D.B. level [Re: dan charles tr6r] #784053 09/12/19 1:30 pm
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KC in S.B. Online Content
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AMAZING !!!!! You actually got STOPPED for loud pipes ??? Can't believe it. Thre are so many incredible loud vehicles on the road now sold new! Not even going after the H-Ds, just the Subarus and the new Mustangs are insane! On what basis / scale was the measurement of the noise determination made? Calibrated EAR? Don't misunderstand me. I HATE loud pipes, but want to understand how the stop can hold up a in court? As of now, I've not seen any meters used, and the AMA rag has been offering them, a standard to use, and training in an effort to help with standardization. Not many departments have them to my knowledge ??

Anyhow, I put the Can-Opener style in my A65 straight through mufflers, as they had a very loud Barky sound power on. Didn't change the power that I notice, did lower the Bark to my satisfaction. Even so, likely would not pass a sound meter standard,............. If there is one. Up until now, CA has the code written for new bikes, mufflers need the factory sound qualification stamped in the metal.
Seen any CHP looking for that?


Down to 1 BSA, 2 Triumphs, 1 '56 Chevy
1 '65 XLCH on the way to Japan!
Re: inserts for tt pipes to comply with D.B. level [Re: dan charles tr6r] #784085 09/12/19 8:11 pm
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reverb Online Content
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...hello KC; can you post a detailed photo of your mod?
What is not good is an strident sound; a bass powerful sound is good. In my pre unit 500 I do not have mufflers but sounds very nice like a 650.


Moderated by  John Healy 

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