Super Cub (T20SC)

Super Cub (T20SC)

It was November 1966 and just over a year had passed since the announcement of the new T20B Bantam Cub. Now a second model was to be produced, a Super Cub.

Engine-wise the new model was identical the Bantam Cub, although frame-wise it utilised the D10 Bantam frame modified in the same way as the D7 one had been. The main difference being the use of full width front and rear wheel hubs though with the same brake linings as the Bantam Cub.

Not produced as a replacement model, both Bantam Cub variations ran together. The first year of the Super Cub it was in Bushfire Red, becoming Firecracker Red for 1968/69. Its D10 petrol tank being smaller, part chromed and using a badge strangely reminiscent of the original T15 Terriers.

Same as the Bantam Cub it was a good machine, having the final development of the Cub engine in a chassis that handled really well, although with styling that was very different to that of the original Tiger Cub models.

Specifications

Production

Started:

17th November 1966

Finished:

29th July 1969

Numbers:

3838 to 9710

(not continuous)

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 (7.5 kW or 10.1 PS) @ 6000 rpm

Carburettor:

Amal Monobloc 375/61 (up to 1968)

Camshaft:

Standard - valve clearances In & Ex 0.010in (cold)

Clutch:

Wet multiplate

Gears:

4

Cycle Parts

Front Suspension:

Telescopic forks, hydraulic damped

Rear Suspension:

Swing-arm with twin shock absorbers

Front Wheel:

18 inch (WM1 rim)

Rear Wheel:

18 inch (WM1 rim)

Front tyre:

3.00 x 18

(possibly 3.25 x 18 - see T20B model)

Rear tyre:

3.00 x 18

(possibly 3.25 x 18 - see T20B model)

Brakes:

5.5 in dia. Single leading shoe drum front and rear

Petrol Tank:

2.25 UK gallons (2.4 US gallons or 9.09 litres)

Oil tank:

4 UK pints (4.8 US pints or 2.27 litres)

Gearbox:

1/3 UK pint (0.4 US pints or 0.19 litres)

Primary Chaincase:

1/3 UK pint (0.4 US pints or 0.19 litres)

Front Fork:

1/8 UK pint (0.15 US pints or 0.07 litres)

Electrics

Type:

Lucas Ignition Coil

Voltage:

6

Charging Type:

Alternator / Rectifier

Ignition Timing:

8° BTDC static. 32° fully advanced

Points Gap:

0.014in - 0.016in

Spark Plug:

Champion L7 or equivalent

Spark Plug Gap:

0.025in