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#628379 - 12/02/15 3:32 am Re: TR5 Adventurer exhaust options [Re: dommie90]  
Joined: Aug 2014
Posts: 825
Les P Online content
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Les P  Online Content

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Posts: 825
Kiwi in Australia.
I did these PDF's some time back, they might be of some interest.

TR5T ISDT

1973 TR5T

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#628413 - 12/02/15 11:08 am Re: TR5 Adventurer exhaust options [Re: Tetley]  
Joined: Feb 2008
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Tridentman Online content
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New Jersey USA
Interesting, Les,--many thanks for posting.

#628437 - 12/02/15 3:15 pm Re: TR5 Adventurer exhaust options [Re: Les P]  
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Tetley Offline
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Tetley  Offline
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Posts: 11
Nottinghamshire
Great info from Les P, many thanks.

Tetley

#628487 - 12/02/15 8:27 pm Re: TR5 Adventurer exhaust options [Re: Tetley]  
Joined: Sep 2014
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Jeff K. Offline
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Jeff K.  Offline
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Posts: 455
Michigan, USA
I did some digging through the old magazines (~2000+)down there. I found a July 1973 Cycle Illustrated that had the TR5T on the front cover and a 8 page article on setting one up for Enduros.

They used:
Preston Petty Super Fenders front and back $5.95 + $7.95
Hodaka Mudflaps w/brackets $.96 ea
72 Penton headlight $16
Removed and plugged the tach and the oil pressure sender.
Bultaco 250 SD Tailight $4.80
28mm Mikuni $32.00
Removed turn signals etc

And claimed a loss of 32 lbs

But in the seventeen photos, it appears they are using the stock exhaust. Then in the material list it has:

1966 Triumph 500 Jackpine exhaust pipe E4514 $10.00
1966 Triumph 500 Jackpine exhaust muffler E5413 $15.00

And almost at the end of the article it mentions using the "old style" muffler and exhaust to save weight and reduce damage. They then pointed out that in 400 miles of riding with the stock system they had leaves and other debris catch fire due to the stock pipes twice.
Has anyone every see a 1966 500 Jackpine model or it's exhaust system ? or was this something Triumph made special and sent over for the race.
Jeff

#628492 - 12/02/15 8:44 pm Re: TR5 Adventurer exhaust options [Re: Tetley]  
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Tridentman Online content
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Tridentman  Online Content

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New Jersey USA
The standard spec includes a spark arrestor to meet US Forestry regs---but I guess they meant leaves etc being caught up under the low level exhaust system and catching fire there.
Otherwise known as the patented Triumph system to make you go like hell so that the velocity puts the fire out!

#628503 - 12/02/15 10:08 pm Re: TR5 Adventurer exhaust options [Re: Jeff K.]  
Joined: Aug 2001
Posts: 1,816
Steve Erickson Offline
Steve Erickson  Offline


Joined: Aug 2001
Posts: 1,816
The Northwoods... Michigan
In answer to your Jackpine question, that is a common moniker for the 66 T100C, so the exhaust referred to would just be the stock siamesed high pipe for that year.

Which doesn't work as stock on the TR5T, due to the close proximity of the downtube to exhaust port. They must have altered it to fit, or just never mounted it (maybe why you didn't see a picture?).

I'm surprised a Michigander isn't familiar with that term for that bike, Bill Baird was probably responsible for it being called as such. Though I don't know if it was ever an "official" designation, probably just a popularized magazine dubbing.

I've been referring to the 66 T100C as a Jackpine since, well, 66.

#628536 - 12/03/15 4:37 am Re: TR5 Adventurer exhaust options [Re: Steve Erickson]  
Joined: Sep 2014
Posts: 455
Jeff K. Offline
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Jeff K.  Offline
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Posts: 455
Michigan, USA
I grew up riding Poker Runs and Enduros and spent many years riding in the woods up by M 61 in Gladwin. I did not know if it was a official model or if they had put together something special for the race. I did some web searches and it looks like it was a unofficial nick name for the early T100C.
Jeff

#628571 - 12/03/15 11:19 am Re: TR5 Adventurer exhaust options [Re: Jeff K.]  
Joined: Aug 2001
Posts: 1,816
Steve Erickson Offline
Steve Erickson  Offline


Joined: Aug 2001
Posts: 1,816
The Northwoods... Michigan
Continuing the topic drift for one more post, in looking at the 1966 Triumph USA sales brochure, it does refer to the T100C as "the famous Jack Pine" model.

Don't know if that makes it "official" or not, or if it would apply to other years? But it certainly does to the 66.

OK, back to twisty pipes... I have looked at one bike with the 66 exhaust, but the right side was altered to fit, something was changed with spigots, and the engine had to be removed to mount the pipe. Musta really wanted that look...

#628743 - 12/04/15 12:49 pm Re: TR5 Adventurer exhaust options [Re: Steve Erickson]  
Joined: Jan 2015
Posts: 142
Lancashirelad Offline
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Lancashirelad  Offline
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Posts: 142
East Lancs
If you look on www.dcclassicmotorcycles.co.uk Dave does/did a few different pipes for the TR5Ts & the Triumph twin based pre65 bikes he builds, there's a few ideas there?


Red Rose Classic MCC PRE65 & Twinshock trials in Lancashire
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