1969 Triumph TR6

1969 TRIUMPH TR6 BY THE NUMBERS
For the first time ever, a Triumph TR6 was called a "Tiger". In fact the entire 1969 Triumph TR6 model lineup were all Triumph Tigers & would remain so for the rest of its life. Interestingly however, Triumph workers at the Meriden factory continued to refer to the TR6 as a Trophy for many years. The individual 1969 Triumph Tiger models were the standard TR6, TR6R roadster, TR6C street scrambler with high pipes & the TR6P for Police work. Engine & Frame Numbers ran from DU87124 to DU88524, built from July 29, 1968 to August 14, 1968; then NC02352 to HC2434, built from October 26, 1968 to July 15, 1969. This first batch was the last to use the "DU" engine number prefix, in use since 1963. Henceforth, engine numbers would be preceded by a 2- or 3-letter prefix indicating the month & year of manufacture.

ENGINE CHANGES
Along with the entire motorcycle, all threads in the engines were now converted from British Standard to "American" (UNC & UNF) threads. New connecting rods, dimensionally unchanged, now with UNF bolts & nuts, too 28 lb/ft of torque instead of 22. Hepolite pistons were made shorter, thicker at the crown & gudgeon pin (wrist pin). The oil pump feed plunger was enlarged to increase oil volume. Crankshaft flywheel weight was increased but the balance factor remained at 85%. Pushrod tubes were revised again, this time with Viton O-rings top & bottom in the never-ending quest for oil-tightness. To this end, the primary & gearbox filler caps were given O-rings as well. The alternator cable was repositioned to exit the top of the primary case. To improve long term durability, both cams were now nitrided, ending the premature wear problems once & for all.

ABOVE: This 1969 Triumph TR6 Tiger is a TR6C model with high pipes. Note the chromed-wire heat shield. Most were removed & lost years ago.

1969 Triumph TR6 SPECIFICATIONS

Model Designations:

TR6

TR6C

TR6R

TR6P

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

Standard

Competition/Off-road/Enduro

Roadster

Police

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

OTHER TRIUMPHS:
Triumph Bonneville
Triumph Trophy
Triumph Tiger
Triumph Thunderbird
Triumph Trident
Triumph X-75 Hurricane

Check out these TRIUMPH BOOKS

COMPLETE BOOK OF CLASSIC & MODERN TRIUMPHS

TRIUMPH MOTORCYCLES IN AMERICA

TRIUMPH MOTORCYCLE RESTORATION

TRIUMPH MOTORCYCLE RESTORATION, PRE-UNIT

TRIUMPH BONNEVILLE & TR6 RESTORATION GUIDE: 1956-1983

TALES OF TRIUMPH MOTORCYCLES & THE MERIDEN FACTORY

TRIUMPH 650 & 750 TWINS OWNERS WORKSHOP MANUAL, 1963-1983

TRIUMPH BONNEVILLE: ESSENTIAL BUYER’S GUIDE

TRIUMPH BONNEVILLE: PORTRAIT OF A LEGEND

ILLUSTRATED TRIUMPH BUYER’S GUIDE, by Roy Bacon

TRIUMPH BONNEVILLE, 2001-2015

TRIUMPH: PRODUCTION TESTERS TALES FROM MERIDEN

TRIUMPH MOTORCYCLE RESTORATION GUIDE

TRIUMPH OWNERS HANDBOOK, UNIT-CONSTRUCTION 350 & 500, Kindle

TRIUMPH ILLUSTRATED WORKSHOP MANUAL 1945-1955, by Clymer

TRIUMPH TWINS & TRIPLES

FACTORY-ORIGINAL TRIUMPH TWINS, 1938-1962

TRIUMPH BONNEVILLE & TR6, by Timothy Remus

TRIUMPH MOTORCYCLES: FROM SPEED TWIN TO BONNEVILLE

TRIUMPH MOTORCYCLES: THEIR RENAISSANCE & THE HINKLEY FACTORY

TRIUMPH PRE-UNIT TWINS OWNERS WORKSHOP MANUAL

TRIUMPH THRUXTON BONNEVILLE 1959-1969

TRIUMPH MOTORCYCLES ILLUSTRATED WORKSHOP MANUAL 1937-1951, by Clymer

TURNER’S TRIUMPHS: EDWARD TURNER & HIS TRIUMPHS

TRIUMPH TWIN RESTORATION, by Roy Bacon

TRIUMPH TIGER CUB & TERRIER 1952-1968, Haynes Repair Manual

TRIUMPH 675 DAYTONA & SPEED TRIPLE REPAIR MANUAL 2006-2010, Haynes

CLASSIC MOTORCYCLES: TRIUMPH

TRIUMPH BONNEVILLE YEAR BY YEAR

TRIUMPH TRIPLES

TRIUMPH RACING MOTORCYCLES IN AMERICA

TRIUMPH MOTORCYCLES

TRIUMPH, by Roy Bacon

TRIUMPH 750/900 TRIPLES & 1200 FOURS 1991-1999, Haynes Repair Manual

TRIUMPH TROPHY BIBLE

TRIUMPH DAYTONA, SPEED TRIPLE SPRINT & TIGER: 885/955 1997-2005, Haynes Repair Manual

BSA & TRIUMPH TRIPLES GOLD PORTFOLIO 1968-1976

TRIUMPH TRIDENT OWNERS WORKSHOP MANUAL, by Haynes

TRIUMPH: A CENTURY OF PASSION & POWER

TRIUMPH BONNEVILLE, by Osprey

TRIUMPH TIGER 100 & 110, 1939-1961, by Roy Bacon

TRIUMPH TIGER 100 & DAYTONA

TRIUMPH BONNEVILLE, by Crowood

TRIUMPH by Don Morley

TRIUMPH TRIPLES & FOURS 1991 & 2004

TRIUMPH 350 & 500 1957-1974 ESSENTIAL BUYERS GUIDE

BONNIE: THE DEVELOPMENT OF THE TRIUMPH BONNEVILLE

TRIUMPH SINGLES: EARLY DAYS TO 1974, by Roy Bacon

TRIUMPH: RETURN OF THE LEGEND

TRIUMPH FUEL INJECTED TRIPLES 1997-2000

BOOK OF TRIUMPH TWINS 1968-1969, by Floyd Clymer

THE TRIUMPH STORY: RACING & PRODUCTION MODELS 1902-PRESENT

TRIUMPH 350 & 500 TWINS 1958-1973, Haynes Repair Manual

TRIUMPH BONNEVILLE 2001-=2008 ROAD TEST PORTFOLIO

HINKLEY TRIPLES & FOURS

TRIUMPH PRE-UNIT TWINS

HINKLEY TRIUMPHS: THE FIRST GENERATION

TRIUMPH BONNEVILLE BIBLE: ALL MODELS 1959-1983

TRIUMPH TWENTY-ONE TO DAYTONA: C CLASS 350 & 500 TWINS

ORIGINAL TRIUMPH BONNEVILLE

TRIUMPH 650 & 750 TWINS

TRIUMPH MOTORCYCLES & CUSTOM BIKES

TRIUMPH MOTORCYCLES

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TRIUMPH SPEED TWIN & THUNDERBIRD BIBLE

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TRIUMPH MOTORCYCLES FROM 1950-1983

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TRIUMPH THUNDERBIRD, TROPHY & TIGER ESSENTIAL BUYERS GUIDE

TRIUMPH TIGER CUB BIBLE

ROAD RACING HISTORY OF THE TRIUMPH 500 UNIT TWIN

EDWARD TURNER: THE MAN BEHIND THE MOTORCYCLES

SAVE THE BONNEVILLE: THE INSIDE STORY OF THE MERIDEN WORKERS CO-OP

TRIUMPH DAYTONA 1991-2006 ROAD TEST PORTFOLIO

TRIUMPH DAYTONA 2003-2009 ROAD TEST PORTFOLIO

TRIUMPH TIGER 100 / DAYTONA: DEVELOPMENT HISTORY

TRIUMPH, by Daniel Gilpin

BOOK OF TRIUMPH MOTORCYCLES ILLUSTRATED SHOP MANUAL 1935-1939

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TRIUMPH BONNEVILLE T120 1959-1974, by Roy Bacon

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ILLUSTRATED TRIUMPH BUYERS GUIDE, by Roy Bacon

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