1982 TRIUMPH BONNEVILLE


1982 Triumph T140 Bonneville Royal Wedding Edition, Triumph motorcycles

1982 Triumph Bonneville T140LE Royal Wedding Edition. Starter drive is visible at rear of timing cover.




MODEL DESIGNATIONS
As the skies continued to darken at Triumph Motorcycles, the resourceful fellows at Meriden Co-op needed to come up with ever new ways to dress up the same old antiquated design. They had hit on the concept of Limited Edition Specials with the 1977 Triumph T140VJ Bonneville Silver Jubilee, which was a minor hit for the cash-strapped company. They did it again in 1979 & 1980 with the Triumph T140D Bonneville Special. In 1981, there was the Triumph Bonneville Executive (a touring model available with electric start (T140ES) or kickstart-only (T140E), and the T140AV (Anti-Vibration) intended & being evaluated for Police work. Now, for the 1982 Triumph Bonneville, the theme for their new bike fell into their laps. Prince Charles, Duke of Wales, and Lady Diane Spencer were wed & Triumph built yet another limited-edition motorcycle to commemorate it, the 1982 Triumph Bonneville T140LE Royal Wedding. The T140E ("E" for Environmental, kickstart-only), the T140ES (electric starter) & the Bonneville Executive were still in the model line-up for 1982.

ENGINE CHANGES
Engine changes were purely cosmetic, and only on the T140LE Royal Edition, which was blacked out with the tips of all alloy cooling fins cut & polished. What few T140LE Royals reached the US did not have blacked out engine cases. Several variations on the Royal Wedding black-out paint scheme went to different markets, some with black tanks, some with chrome, some with silver frames, some with black. US models continued to use Bing CV carburetors, while UK versions continued to use Amal MkII Concentrics.

RUNNING GEAR
Marzocchi rear shocks now replaced Girlings as supplies ran out. Cast wheels were now made by Morris (Lester made them prior), already optional, now standard on all ES models. The Triumph T140ES Bonneville became known as "Electro". Alloy Lockheed brake calipers replaced the prior iron units on smaller 9.8" diameter rotors. Twin front disks became standard on Executives & optional on all other models.

1982 Triumph T140 Bonneville Royal Wedding Edition, Triumph motorcycles

The 1982 Triumph Bonneville T140LE Royal Wedding Edition celebrated the wedding of Prince Charles & Lady Diana Spencer.

1982 Triumph T140LE Bonneville Royal Wedding Edition, Triumph motorcycles

The 1982 Triumph Bonneville T140LE Royal Wedding Edition came with 7-spoke cast Morris 'mag' wheels & twin front disk brakes. Different markets got different paint treatments. Here fork legs are black, but outer engine cases are polished.

1982 Triumph Bonneville, Triumph Bonneville T140ES, Triumph Motorcycles

1982 Triumph Bonneville T140ES with electric start, in Smokey Blue paint.


1982 Triumph Bonneville SPECIFICATIONS:



MODEL DESIGNATIONS:
1982 Triumph Bonneville T140E..................... Standard
1982 Triumph Bonneville T140ES.................... Electric Start
1982 Triumph Bonneville T140LE.................... Royal Wedding

ENGINE:
Engine type....................................... OHV vertical twin
Horsepower at RPM............................ 49 BHP @ 6,200 rpm
Bore................................................ 76mm / 2.79"
Stroke............................................. 82mm / 3.23"
Displacement.................................... 744cc / 40 cu. in.
Compression Ratio............................. 8.6:1
Valve Clearance (cold):
Inlet................................................ 0.05mm / 0.002"
Exhaust............................................ 0.10mm / 0.004"
Valve Timing:
Inlet Valve Opens.............................. 34 degrees BTDC
Inlet Valve Closes.............................. 55 degrees BTDC
Exhaust Valve Opens.......................... 55 degrees BTDC
Exhaust Valve Closes.......................... 27 degrees BTDC

IGNITION:
Ignition Breaker Gap............................. 0.4mm / 0.015"
Spark Plug Gap.................................. 0.50mm / 0.020"
Timing (static).................................14 degrees BTDC
Timing (fully advanced):........................ 38 degrees BTDC

CARBURETORS:
Type................................................ Bing Type 94 CV
Throat Size....................................... 32mm
Main Jet........................................... 210
Needle Jet........................................ .107
Needle Position.................................. 2
Needle Type.......................................D
Throttle Valve.................................... 2
Pilot Jet............................................ 25

TRANSMISSION:
Speeds.............................................. 4
Gear Ratios:
5th - Top........................................... 4.7
4th - Fourth........................................ 5.59
3rd - Third......................................... 6.58
2nd - Second...................................... 8.63
1st - Bottom...................................... 12.25

CLUTCH:
Type................................................ Multi-plate, wet
Number of Plates:
Drive Plates...................................... 6
Driven Plates.................................... 6

SPROCKETS:
Engine............................................. 29 teeth
Clutch............................................. 58 teeth
Gearbox.......................................... 20 teeth
Rear Wheel...................................... 47 teeth

CHAIN:
Primary, pitch.................................. 3/8" triplex
Primary, length................................. 84 links
Final Drive, pitch............................... 5/8" X .400" X 3/8"
Final Drive, length............................. 106 links

CAPACITIES:
Fuel (US versions)............................. 2.5 Imp. gal.
Fuel (UK & export versions)................. 4 Imp. gal.
Oil Tank........................................... 5 pints / 3 L
Gearbox........................................... 1 pt / 500cc
Primary Chaincase............................. 1/4 pt / 150cc
Front Forks....................................... 6.4 oz. / 190cc

TIRES:
Front............................................... 3.25 X 19"
Rear................................................ 4.00 X 18"

SUSPENSION:
Front............................................... Telescopic Forks
Rear................................................ Swing Arm

BRAKES:
Front............................................... 10" / 12.9cm disk
Rear................................................ 7" / 17.78cm SLS

DIMENSIONS:
Seat Height...................................... 32.5" / 77.5cm
Wheelbase........................................ 54.5" / 140.3cm
Length.............................................. 85.5" / 202cm
Width............................................... 28.5" / 72cm
Ground Clearance.............................. 5" / 12.7cm
Weight, unladen................................ 403 lbs / 183kg


SAVE THE BONNEVILLE!
Did you ever wonder what really happened to Triumph? This is the behind-the-scenes story of the Meriden Workers' Co-op, written by John Rosamond, the welder-turned-Company Chairman. From the factory takeover in '73, and the formation of the Co-op in '75, through their endless struggles to continue to produce Triumph Bonnevilles, despite constant setbacks & opposition, until its slow death in 1983. The book is loaded with amazing photos & information you won't find anywhere else. This is not hearsay either, this is the real deal right from the source. I lived through this stuff myself, working as an apprentice mechanic in a Triumph/BSA/Norton dealership in 1971 when the first Oil-in-Frame Triumphs arrived to a lukewarm response. There were lots of ups & unfortunately more downs for the cash-strapped Co-op, but the scrappy Brits soldiered on & even came out with some stunning new models (like the Diana watercooled DOHC 4-valve twin, the contra-rotating balance shaft Bonneville, the 8-valve TSS, Anti-Vibration frames with rubber engine mounts & more), all outlined in the book. It's a MUST READ for anyone who mourns the loss of the British Motorcycle Industry as a whole & of Triumph in particular.


You can order the book by clicking on the picture of the book cover, above.


MORE TRIUMPH MOTORCYCLE BOOKS


TALES OF TRIUMPH & MERIDEN

TRIUMPH MOTORCYCLES: TRIUMPH ENGINEERING CO.

TRIUMPH WORKSHOP MANUAL, 1935-1939

TRIUMPH WORKSHOP MANUAL, 1937-1951

TRIUMPH WORKSHOP MANUAL, 1945-1955

TRIUMPH MOTORCYCLES: FROM SPEED TWIN TO BONNEVILLE

TRIUMPH MOTORCYCLES - HINKLEY RENAISSANCE

SAVE THE TRIUMPH BONNEVILLE

THE INSIDE STORY OF THE MERIDEN WORKERS' CO-OP.
STORY OF THE TRIUMPH BONNEVILLE - MOVIE

TRIUMPH 650 & 750 TWINS

ESSENTIAL BUYERS GUIDE TO TRIUMPH BONNEVILLE

TR BONNEVILLE 2001-08

TR BONNEVILLE, PORTRAIT OF LEGEND

TR BONNEVILLE: T120/T140

TRIUMPH MC RESTORATION

HAYNES TR TRIPLES & FOURS

TRIUMPH 21 TO DAYTONA

TRIUMPH TIGER CUB BIBLE

Triumph Motorcycles
Triumph Bonneville
Triumph Bonneville, Pre-Unit Construction, 1959-1962
Triumph Bonneville, Unit Construction, 1963-1970
Triumph Bonneville, Oil-in-Frame, 1971-1983

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