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TR6R and TR6C: What's the difference? #126445
10/17/07 2:05 am
10/17/07 2:05 am
Joined: Oct 2007
Posts: 64
Byesville, OH USA
Jacob H Moore Offline OP
BritBike Forum member
Jacob H Moore  Offline OP
BritBike Forum member
Joined: Oct 2007
Posts: 64
Byesville, OH USA
Hey all, I searched the forum, and all I found out was that the TR6R is the Tiger and the TR6C is the Trophy. They obviously both have single carb heads, but I was wondering are there any differences between these 2 engines? They look the same to the naked eye, but surely they wouldn't designate a whole different model name to an identical engine... or would they?

If the engines are, in fact, the same, what are the differences between a 650 Trophy and a Tiger? Maybe I just have a relatively untrained eye, but they look about the same to me.

We have a couple Tigers at the shop (My 1970 and a customer's 71) but no Trophy to compare them to (although we have a couple of TR6Cs on a shelf in the shop).

Forgive me if this has been treated before, but like I said I searched the forum and nothing jumped out at me.

I really appreciate any information you guys can give me.

Thank you,
Jake


1966 B44E
1970 TR6R
1971 T25T
1973 T150V
1975 Yamaha DT250B
2005 Yamaha FJR1300A
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Re: TR6R and TR6C: What's the difference? #126446
10/17/07 3:01 am
10/17/07 3:01 am
Joined: Aug 2001
Posts: 6,790
Vermont
Jon W. Whitley Online content

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Jon W. Whitley  Online Content

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Posts: 6,790
Vermont
The TR6R is the road model with down swept pipes and aside from paint colors is pretty much identical to the Bonneville.....except for only having one carb.

The TR6C was the on/off road model and had high pipes as well as a smaller headlight (usual case) and on occasion a smaller front gearbox sprocket. Paint scheme should match that of the TR6R.

Check out Harry Woolridge's book: The Triumph Trophy Bible ISBN-10: 1904788025
ISBN-13: 9781904788027

beerchug


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: TR6R and TR6C: What's the difference? #126447
10/17/07 3:22 am
10/17/07 3:22 am
Joined: Oct 2007
Posts: 64
Byesville, OH USA
Jacob H Moore Offline OP
BritBike Forum member
Jacob H Moore  Offline OP
BritBike Forum member
Joined: Oct 2007
Posts: 64
Byesville, OH USA
Thank you so much Jon!

I realize now that I've seen Trophy pics with the high pipes! But I've also seen "Trophy" pics with low pipes... maybe they weren't really Trophies. That was what threw me off I guess.

Anyway, thank you again.

Jake


1966 B44E
1970 TR6R
1971 T25T
1973 T150V
1975 Yamaha DT250B
2005 Yamaha FJR1300A
Re: TR6R and TR6C: What's the difference? #126448
10/17/07 3:26 am
10/17/07 3:26 am
Joined: Jul 2007
Posts: 594
australia
6
649 Offline
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649  Offline
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6
Joined: Jul 2007
Posts: 594
australia
and I think the TR6C had batteryless ET ignition


1970 tr6r dryframe
Re: TR6R and TR6C: What's the difference? #126449
10/17/07 3:47 am
10/17/07 3:47 am
Joined: Aug 2001
Posts: 6,790
Vermont
Jon W. Whitley Online content

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Jon W. Whitley  Online Content

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Posts: 6,790
Vermont
Not always....depends which year and later years didn't.


Posted by 649:
Quote:
and I think the TR6C had batteryless ET ignition


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: TR6R and TR6C: What's the difference? #126450
10/17/07 3:50 am
10/17/07 3:50 am
Joined: Aug 2001
Posts: 6,790
Vermont
Jon W. Whitley Online content

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Jon W. Whitley  Online Content

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Posts: 6,790
Vermont
Jake,

You're welcome!

beerchug


Quote:
Thank you so much Jon!

I realize now that I've seen Trophy pics with the high pipes! But I've also seen "Trophy" pics with low pipes... maybe they weren't really Trophies. That was what threw me off I guess.

Anyway, thank you again.


Jon W.


1957 6T Thunderbird 650
1968 T100R Daytona 500
1971 TR6R Tiger 650
1970 BSA A65F 650
1955 Tiger 100 - Project

Re: TR6R and TR6C: What's the difference? #126451
10/17/07 4:29 am
10/17/07 4:29 am
Joined: Oct 2007
Posts: 93
uniontown, pa, usa
Buster Conrod Offline
BritBike Forum
Buster Conrod  Offline
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Joined: Oct 2007
Posts: 93
uniontown, pa, usa
Many TR6Cs have been changed to low pipes for no good reason other than high pipes went out of style. I think that TR6Cs had folding footpegs but TR6Rs had fixed pegs. Anyone know if TR6Cs came with a lower geared front sprocket also?


1970 TR6R Dry Frame Silver and Blue, Prettiest bike ever....
Re: TR6R and TR6C: What's the difference? #126452
10/17/07 5:43 am
10/17/07 5:43 am
Joined: Jul 2007
Posts: 27
Ireland
Z
ZEDBOY Offline
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ZEDBOY  Offline
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Z
Joined: Jul 2007
Posts: 27
Ireland
My '68 TR6R is a Trophy Sports, the TR6C for that year was a Trophy Special. For '69 the TR6R for no apparent reason, became a Tiger & the TR6C a plain Trophy. Seems to have stayed that way for the next few years.
Follow the "Brochures" link for good info:
http://www.classicbike.biz/Triumph/Triumph.htm


1968 TR6R
'70/7? TR6R Chop in boxes
Re: TR6R and TR6C: What's the difference? #126453
10/17/07 9:48 am
10/17/07 9:48 am
Joined: Aug 2001
Posts: 3,913
Houston Texas
Britbodger R.I.P. Offline
In Remembrance
Britbodger R.I.P.  Offline
In Remembrance
Joined: Aug 2001
Posts: 3,913
Houston Texas
I bought my TR6C new in 1970. I can confirm, as others have said already, that the engine is identical to the R model.

Otherwise it came with high pipes, folding footrests and 18T gearbox sprocket. Also, another feature distinguishing it from the R model,is that it has stainless steel fenders whereas the R model's were painted.

Think that covers it.

I still own the same bike although at the moment with downpipes and other mods.

beerchug

Re: TR6R and TR6C: What's the difference? #126454
10/17/07 11:54 am
10/17/07 11:54 am
Joined: Oct 2006
Posts: 208
Nova Scotia
R
relicduke Offline
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relicduke  Offline
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R
Joined: Oct 2006
Posts: 208
Nova Scotia
Didn't the "c" model ,like the "TT" have the lighter crank and hotter cams? I have one that has drilled cam gears


poverty is the mother of invention
Re: TR6R and TR6C: What's the difference? #126455
10/17/07 12:05 pm
10/17/07 12:05 pm
Joined: Mar 2005
Posts: 10,047
Boston, Massachusetts
J
John Healy Online content

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John Healy  Online Content

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J
Joined: Mar 2005
Posts: 10,047
Boston, Massachusetts
The "C" and the "TT" model came with the crank being used in the year it was produced. In both cases the cams were the same as the "R".
Drilled cam gears were not supplied by Triumph either in a production model, performance option, or as a spare part.


Re: TR6R and TR6C: What's the difference? #126456
10/17/07 12:09 pm
10/17/07 12:09 pm
Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Tiger Offline
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Tiger  Offline
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Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Quote:
Originally posted by Britbodger:
I bought my TR6C new in 1970. I can confirm, as others have said already, that the engine is identical to the R model.

Otherwise it came with high pipes, folding footrests and 18T gearbox sprocket. Also, another feature distinguishing it from the R model,is that it has stainless steel fenders whereas the R model's were painted.

Think that covers it.

I still own the same bike although at the moment with downpipes and other mods.

beerchug
The "C" also had the smaller capacity Bonneville tank, no tach, and a different top yoke without rubber mounts for the handlebar.
And a 5 1/2" headlight.


1969 TR6R
7.62 x 51 is not a maths puzzle.
Re: TR6R and TR6C: What's the difference? #126457
10/17/07 12:16 pm
10/17/07 12:16 pm
Joined: Aug 2001
Posts: 3,913
Houston Texas
Britbodger R.I.P. Offline
In Remembrance
Britbodger R.I.P.  Offline
In Remembrance
Joined: Aug 2001
Posts: 3,913
Houston Texas
Relicduke,

The 70 TR6 C and R models both had the same E3134 cam profile as used in the T120 which was Triumph's hottest stock cam of the time I believe.

So doubt if the TT special came with hotter cams than the 1970 TR6 model which seems to be verified by John Healy.

As for the flywheel, general consensus seems to be that the heavier flwheel is better.

My beerchug

p.s. Yes you are right Tiger - overlooked that shocked

Re: TR6R and TR6C: What's the difference? #126458
10/17/07 1:17 pm
10/17/07 1:17 pm
Joined: Apr 2006
Posts: 153
Winchester Tn.
T
triumphguy Offline
BritBike Forum member
triumphguy  Offline
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T
Joined: Apr 2006
Posts: 153
Winchester Tn.
Also most TR6C'S were fitted with the Lucas engine 'kill ' button

Re: TR6R and TR6C: What's the difference? #126459
10/17/07 1:35 pm
10/17/07 1:35 pm
Joined: Nov 2005
Posts: 7,271
Back on the mainland!
JubeePrince Online content

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JubeePrince  Online Content

Life member
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Posts: 7,271
Back on the mainland!
R's had speedometers and C's didn't.....


'77 T140J
"Vintage Bike". What's in your garage?

"The paying customer is always right."

Fitting round pegs into square holes since 1961...
Re: TR6R and TR6C: What's the difference? #126460
10/17/07 1:49 pm
10/17/07 1:49 pm
Joined: Aug 2001
Posts: 3,913
Houston Texas
Britbodger R.I.P. Offline
In Remembrance
Britbodger R.I.P.  Offline
In Remembrance
Joined: Aug 2001
Posts: 3,913
Houston Texas
Putting my anorak on here laugh

The 70 TR6C had a speedometer but no tachometer.

beerchug

Re: TR6R and TR6C: What's the difference? #126461
10/17/07 1:54 pm
10/17/07 1:54 pm
Joined: Nov 2005
Posts: 7,271
Back on the mainland!
JubeePrince Online content

Life member
JubeePrince  Online Content

Life member
Joined: Nov 2005
Posts: 7,271
Back on the mainland!
call me lysdexic...... :rolleyes:


'77 T140J
"Vintage Bike". What's in your garage?

"The paying customer is always right."

Fitting round pegs into square holes since 1961...
Re: TR6R and TR6C: What's the difference? #126462
10/17/07 4:44 pm
10/17/07 4:44 pm
Joined: Aug 2006
Posts: 259
FLOWERMOUND, TEXAS, 75022, USA
H
HUGOCT Offline
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HUGOCT  Offline
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H
Joined: Aug 2006
Posts: 259
FLOWERMOUND, TEXAS, 75022, USA
I like the light flywheel
I've got one in my 67 TT special that I dirttrack in the brakeless class
winds up faster, shuts down faster
Come to Texas and race vintage flattrack!

Re: TR6R and TR6C: What's the difference? #126463
10/17/07 7:36 pm
10/17/07 7:36 pm
Joined: Mar 2005
Posts: 10,047
Boston, Massachusetts
J
John Healy Online content

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John Healy  Online Content

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J
Joined: Mar 2005
Posts: 10,047
Boston, Massachusetts
There you go again, HUGOCT... Rumour has it you won the Dinasor class last weekend against some big time old rivals.

So you say it was the flywheel bigt
John


Re: TR6R and TR6C: What's the difference? #126464
10/17/07 7:42 pm
10/17/07 7:42 pm
Joined: May 2006
Posts: 25
St. Paul MN
GP Motorcycle Offline
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GP Motorcycle  Offline
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Joined: May 2006
Posts: 25
St. Paul MN
I have to take exception (mild) to Buster C's comment about riders switching from high pipes for no apparent reason. Everytime I rode my TR6 without boots when it had high pipes I'd burn my ankels.


74 T140V
60 TR6B
A famous Triumph dealer once told me 'Never let an electrician rewire your bike'. Truer words were never spoken.
Re: TR6R and TR6C: What's the difference? #126465
10/18/07 1:54 am
10/18/07 1:54 am
Joined: Oct 2007
Posts: 93
uniontown, pa, usa
Buster Conrod Offline
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Buster Conrod  Offline
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Posts: 93
uniontown, pa, usa
OK I take it back - that would be a good reason.


1970 TR6R Dry Frame Silver and Blue, Prettiest bike ever....
Re: TR6R and TR6C: What's the difference? #126466
10/18/07 5:37 am
10/18/07 5:37 am
Joined: Sep 2005
Posts: 228
Melbourne, Australia
Melbourne Metisse Offline
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Melbourne Metisse  Offline
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Joined: Sep 2005
Posts: 228
Melbourne, Australia
I thought the C had a lower gearset in the 'box, I need to check Roy Bacon's book to be sure. Mine certainly revs a bit more than Tiger's R when we're doing the same speeds. I'm pretty sure we've got the same gearbox sprocket...

Re: TR6R and TR6C: What's the difference? #126467
10/18/07 7:50 am
10/18/07 7:50 am
Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Tiger Offline
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Tiger  Offline
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Joined: Oct 2004
Posts: 4,429
Melbourne Australia
Pretty sure we have not Nigel, mine is an odd combination of 20/48 to allow the drum to be re-banded with a 520 sprocket but only slightly higher than stock "R" gearing.
Four speed gearbox ratios are identical but according to the information I have the extended top gear sleeve was fitted for '68 and the gears/shafts changed again in detail for '69.
I have all the necessaries to change yours to a 19T at the gearbox but it will cost you a case of beer plus parts at cost. bigt


1969 TR6R
7.62 x 51 is not a maths puzzle.
Re: TR6R and TR6C: What's the difference? #126468
10/18/07 11:51 am
10/18/07 11:51 am
Joined: Oct 2006
Posts: 208
Nova Scotia
R
relicduke Offline
BritBike Forum
relicduke  Offline
BritBike Forum
R
Joined: Oct 2006
Posts: 208
Nova Scotia
John
So the light crank is not a factory race/off road option?
Just out of curiosity,where would the drilled cam gears come from,they don't look homemade,
Yessir,A TT in a rigid can be a handfull{gotta love it}


poverty is the mother of invention
Re: TR6R and TR6C: What's the difference? #126469
10/18/07 12:34 pm
10/18/07 12:34 pm
Joined: Sep 2005
Posts: 228
Melbourne, Australia
Melbourne Metisse Offline
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Melbourne Metisse  Offline
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Joined: Sep 2005
Posts: 228
Melbourne, Australia
Ah-ha! I'd forgotten about the 520 conversion, Richard!

Right, just checked Roy Bacon's book and been to the Shed to count teeth!

Firstly the book - for the '71-'72 models the quoted difference between C & R is just one tooth at the gearbox (18/C, 19/R). Engine, clutch and rear are identical.

Internal ratios are virtually identical in the standard pre- and post '69 models, but between '66 and '72 there were options for wide and close ratio gear sets.

It looks like I've got a 46 tooth rear sprocket and I think that's about as small as you can get for a comical hub. So if my bike sounds busier than Tiger's I'm guessing it's got an 18 tooth at the 'box. It's difficult to count without a centre stand!

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