Triumph Trophy TR6C (1960)

The Triumph TR6 Trophy Desert Sled is a motorcycle that was produced in 1960. It has a four-stroke, parallel twin-cylinder OHV engine with a capacity of 649cc. The piston has a bore of 71 mm and stroke of 82 mm with a compression ratio of 8.5:1. The valve clearance is 0.05mm for the inlet and 0.10mm for the exhaust with timing for the inlet valve opening at 34 degrees BTDC and closing at 55 degrees BTDC. The exhaust valve opens at 48 degrees BTDC and closes at 27 degrees BTDC. It has a 30mm Amal Monobloc carburetor and a Lucas magneto ignition system with a spark plug gap of 0.50mm. The clutch is a wet, multi-plate design with a 4-speed transmission and a final chain drive using 101 links. The suspension consists of telescopic forks at the front and a swing arm at the rear, with drum brakes on both wheels. The front tire is 3.25-19 with a rear tire of 4.00-18. Its dimensions are 2190 mm in length, 720 mm in width, with a wheelbase of 1403 mm and a seat height of 775 mm. It weighs 173 kg and has a fuel capacity of 18 litres.

Technical specifications:

Make Model: Triumph TR6 Trophy Desert Sled

Year: 1960 –
Engine: Four stroke, parallel twin cylinder, OHV
Capacity: 649 cc / 39.6 cu in
Bore x Stroke: 71 X 82 mm
Compression Ratio: 8.5:1
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: 48 degrees BTDC Exhaust Valve Closes: 27 degrees BTDC
Induction: 1 x 30 mm Amal Monobloc carburetor
Ignition: Lucas magneto
Spark Plug Gap: 0.50mm / 0.020″
Timing (fully advanced): Crankshaft position 38 degrees BTDC Piston position 11mm / 7/16″ BTDC
Clutch: Multi-plate, wet
Clutch: Wet, multi-plate
Transmission: 4 Speed
Final Drive: Chain, 101 links
Gear Ratios: 4th 4.88 / 3rd 5.81 / 2nd 8.25 / 1st 11.92:1
Front Suspension: Telescopic Forks
Rear Suspension: Swingarm
Front Brakes: Drum
Rear Brakes: Drum
Front Tyre: 3.25 – 19
Rear Tyre: 4.00 – 18
Dimensions: Length 2190 mm / 86.25 in Width 720 mm / 28.5 in
Wheelbase: 1403 mm / 55.2 in
Seat Height: 775 mm / 30.5 in
Dry Weight: 173 kg / 380 lbs
Fuel Capacity: 18 Litres / 4.8 US gal / 4.0 Imp gal