1967 Triumph TR6


1967 Triumph TR6C Trophy

1967 TRUMPH TR6C TROPHY
Triumph built two basic versions of the 650 TR6, the TR6C "Trophy" and the TR6R "Tiger". The Trophy had high side pipes running along the left side and was set up for off-road use. The Tiger was the roadster version with down pipes, one on each side, and was optimized for road use. Below is the 1967 Triumph TR6C Tiger. The "C" in the model designation is supposed to stand for "Competition" although these bikes came will full lighting and other street equipment. Off-roaders quickly stripped the heavy, bulky road gear off and headed out to the desert, where the TR6C Trophy ruled.
1967 TRIUMPH TR6 BY THE NUMBERS
The 1967 model year included four Triumph TR6 Trophy models: TR6, TR6R, TR6C & TR6P. Engine & frame numbers ran from DU46201 to DU66246, built from September 14, 1966 to July 3, 1967.
ENGINE MODS
Hepworth & Grandage pistons replaced the Triumph units, while the 9.0:1 compression ratio remained unchanged. Starting with engine #DU63043 the final exhaust cam oiling scheme was introduced. Called "timed tappets", oil was fed to the exhaust tappet block at full & constant pressure, & the exhaust cam pushed the tappets up, they opened small oil ports that provided oiling to the exhaust cam lobes. Starting with engine #DU63241 an O-ring was installed on the tappet blocks to prevent oil seepage between the tappet blocks & the barrels. The oil pump was increased in scavenge capacity.

NEW CONCENTRIC CARB
Gone was the age-old Amal Monobloc carburetor. Starting with engine #DU63043 the 1967 Triumph TR6 got a new Amal Concentric (#R930/9-B) with a 30mm bore.
GEARBOX CHANGES
A new mainshaft with longer threads allowed the use of a self-locking nut. Alternate engagement dogs on the mainshaft second gear were deleted to ease shifting.

FRAME & CYCLE GEAR
The anti-theft steering lock was moved from the middle of the steering head to the bottom, now threaded for adjustment. All threads on the frames were now converted to UNF. A new fork top lug went along with the new lock set up. Front fork gaiters now got spring clips to secure them. From Engine #DU54659, O-rings were added to the fork seal holders to help prevent seepage.

BODY WORK
The parcel rack was eliminated from US models, & so the US-market tanks lost the threaded mounting lugs. From #DU54659, the oil tank reverted back to the old top-end oiling set up from 1965.

1967 Triumph TR6R Tiger

1967 TRIUMPH TR6R TIGER
The "Tiger" name had been made famous first by the 500cc T100 Tiger, then by the 650cc T110 Tiger which left production in 1962, at the end of pre-unit construction. Starting with the 1963 model year, the first of the unit-construction TR6s, the Tiger name was applied to the TR6 line from then on. As always, the Tiger name meant high performance, but not quite up to Bonneville standards. But close. The TR6 was just as fast off the line, but didn't have quite as much power at higher RPMs, thanks to the Bonnie's second carb. However, the 1972 Triumph TR6R Tiger was a respectable performer if not pushed too hard. It was not able to keep up with the bigger bikes coming out of Japan by this time, but handled better than any of them. The "R" in the TR6R designation stands for "Roadster", as this model is optimized for street and road use, not off-road like the TR6C. The main difference is the pipes. The TR6C has high pipes, and the TR6R has low pipes.
ABOVE & BELOW: Other differences between the 1967 Triumph TR6C Trophy and TR6R Tiger were that the Tiger had a chromed luggage rack on the tank, painted fenders instead of stainless, and dual gauges, where the Trophy only had a speedo.

1967 Triumph TR6 SPECIFICATIONS

Model Designations:

TR6S/S

TR6C

TR6SC

TR6R

TR6SR

Engine Type

Displacement

Bore & Stroke

Compression

Carburetor

Ignition

Engine output

Primary drive

Primary sprockets

Clutch

Gearbox

Ratios, overall:

1st, bottom

2nd

3rd

4th, top

Final drive

Final sprockets

Frame type

Suspension, front

Suspension, rear

Brake, front

Brake, rear

Tire, front

Tire, rear

Fuel Capacity

Wheelbase

Seat height

Ground clearance

Dry Weight


Street scrambler

Off-road/street (dual purpose/enduro)

Off-road, competition

Roadster

High-performance roadster

Air-cooled OHV vertical twin

649cc / 40.0 ci

71mm X 82mm / 2.79" X 3.23"

8.5:1

1- Amal Concentric, 30mm

Battery & coil, Lucas

42 bhp @ 6500 rpm

3/8" triplex chain X 84 links

Engine 29T X Clutch 58T

Multi-plate, wet

4-speed constant-mesh, right-foot shift


11.8:1

8.17:1

6.76:1

5.84:1

5/8" X .400" X 3/8" chain X 106 links

Gearbox 19T X Rear 47T

Brazed lug, full-cradle, single downtube

Telescopic fork, hydraulic damping

Swing arm, 2 Girling dampers

8" SLS drum, full-width

7" SLS drum, one-side

3.25" X 19" Dunlop

4.00" X 18" Dunlop

2.5 Imp gal (US)/4 Imp gal (UK & export)

54.5" / 140.3 cm

32.5" / 77.5 cm

5.0" / 12.7 cm

380 lbs / 173 kg


MORE TRIUMPH TR6 PAGES:
Triumph TR6
Triumph TR6, Pre-Unit (1956-1962)
.....1956
.....1957
.....1958
.....1959
.....1960
.....1961
.....1962
Triumph TR6, Unit-Construction (1963-1970)
.....1963
.....1964
.....1965
.....1966
.....1967
.....1968
.....1969
.....1970
Triumph TR6, Oil-in-Frame (1971-1972)
.....1971
.....1972
Triumph TR7
.....1973
.....1976

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Triumph TR6
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Triumph X-75 Hurricane

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The Complete Book of Classic and Modern Triumph Motorcycles 1937-Today (Complete Book Series)


Triumph Motorcycles: From Speed-Twin to Bonneville


Triumph Bonneville and TR6 Motorcycle Restoration Guide: 1956-83


British Motorcycles Triumph (Little Books)


Triumph Motorcycles in America


McQueen's Motorcycles: Racing and Riding with the King of Cool


Triumph Motorcycle Restoration


Illustrated Triumph Motorcycles Buyer's Guide: From 1945 Through the Latest Models (Illustrated Buyer's Guide)


Tales of Triumph Motorcycles and the Meriden Factory


Hinckley Triumphs: The First Generation (Crowood Motoclassic)

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Last updated 12/1/17

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