Tiger Cub T20M WD 1964-67
Strip a T20T engine and fit the internals into a later side-points unit, then fit that into a modified T20M Mountain Cub chassis but add strengthened non-folding footrests, a larger 1/2 x 5/16 inch chain instead of the standard 1/2 x 3/16 inch and sprockets to match, stronger control cables, crashbars and black leather panniers, and you have the T20M.WD Cub supplied to the French Army.
It had the small T15 Terrier petrol tank, heavyweight front forks, double gusseting under the headstock for added strength and a mounting bracket on the right-hand rear subframe to take an optional high level exhaust. To match the bigger final drive chain, a larger chainguard was fitted with an extra locating bracket on the left side rear subframe. To finish was a small triangular toolbox under the seat, sealed bearings in the wheels, a crankcase undershield and side and centre stands.
It had the small T15 Terrier petrol tank, heavyweight front forks, double gusseting under the headstock for added strength and a mounting bracket on the right-hand rear subframe to take an optional high level exhaust. To match the bigger final drive chain, a larger chainguard was fitted with an extra locating bracket on the left side rear subframe. To finish was a small triangular toolbox under the seat, sealed bearings in the wheels, a crankcase undershield and side and centre stands.
|
The Energy Transfer ignited engine also had a 7:1 piston modified to take 9:1 piston rings (they had a greater radial depth), a standard camshaft but with sports valve springs in the cylinder head, large diameter needle roller bearing big end assembly and wide ration gear cluster.
The colour of all the machines as supplied was NATO matt green. The tank badges being white lettering on a matt green and chrome backing. |
|
Specifications for the T20SM & T20M 1964-67
Engine
Type: Single-cylinder OHV, unit construction
Capacity: 199cc (12.1 cu in)
Bore/Stroke: 63mm (2.480in) x 64mm (2.520in)
Compression: 7:1
Power: 10bhp @ 6000 rpm
Carburettor: Amal Monobloc 375/44
Camshaft: Standard - valve clearances In & Ex 0.010 (cold)
Clutch: Wet multiplate
Gears: 4
Cycle Parts
Front Suspension: Telescopic forks, hydraulic damped
Rear Suspension: Swing-arm
Front Wheel: 19 inch (WM1 rim)
Rear Wheel: 18 inch (WM2 rim)
Front Tyre: 3.00 x 19
Rear Tyre: 3.50 x 18
Brakes: 5.5 in dia. Single leading shoe drum front and rear
Petrol Tank: 2 5/8 gallons
Oil tank: 2 3/4 pints
Gearbox: 1/3 pint
Primary chaincase: 1/3 pint
Front Fork: 1/4 pint (1/3 pint 1965-on)
Electrics
Type: Lucas Energy Transfer
Voltage: 6
Charging Type: RM 19 Alternator
Ignition Timing: 22 degrees BTDC static. 32 degrees fully advanced
Points Gap: 0.014in - 0.016in
Spark Plug: Champion L7 or equivalent
Spark Plug Gap: 0.020in
Engine
Type: Single-cylinder OHV, unit construction
Capacity: 199cc (12.1 cu in)
Bore/Stroke: 63mm (2.480in) x 64mm (2.520in)
Compression: 7:1
Power: 10bhp @ 6000 rpm
Carburettor: Amal Monobloc 375/44
Camshaft: Standard - valve clearances In & Ex 0.010 (cold)
Clutch: Wet multiplate
Gears: 4
Cycle Parts
Front Suspension: Telescopic forks, hydraulic damped
Rear Suspension: Swing-arm
Front Wheel: 19 inch (WM1 rim)
Rear Wheel: 18 inch (WM2 rim)
Front Tyre: 3.00 x 19
Rear Tyre: 3.50 x 18
Brakes: 5.5 in dia. Single leading shoe drum front and rear
Petrol Tank: 2 5/8 gallons
Oil tank: 2 3/4 pints
Gearbox: 1/3 pint
Primary chaincase: 1/3 pint
Front Fork: 1/4 pint (1/3 pint 1965-on)
Electrics
Type: Lucas Energy Transfer
Voltage: 6
Charging Type: RM 19 Alternator
Ignition Timing: 22 degrees BTDC static. 32 degrees fully advanced
Points Gap: 0.014in - 0.016in
Spark Plug: Champion L7 or equivalent
Spark Plug Gap: 0.020in