Street Scrambler (T20SS)

Street Scrambler (T20SS)

A continuation of the previous year's T20S model, the T20SS was built especially for the California based Triumph importer, Johnson Motors, Inc from 1962 to 1965.

The air filter was of the chrome pancake type fitted on a special intake hose with a 90 degree bend from the carburettor, allowing the filter to tuck in sideways where the T20 Cub battery/tool box normally fitted. The rest of the machine being to the same specification as the T20SC of 1963, although the colours may have been different.

Two-tone colour schemes:

1962:

Burgundy and Silver Sheen

1963:

Flamboyant Flame and Silver Sheen

1964:

Crystal Blue and Silver Sheen

1965:

Pacific Blue and Silver Sheen

Specifications

Production

Started:

22nd September 1961

Finished:

15th January 1965

Numbers:

82276 to 1388

(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:

9 : 1

(7 : 1 optional)

Power:

16bhp (12.1 kW or 16.2 PS) @ 6700 rpm

Carburettor:

15/16 inch Amal Monobloc 376/272

Camshaft:

'R' cam - valve clearances In 0.002in : Ex 0.004in (cold)

Clutch:

Wet multiplate

Gears:

4

Cycle Parts

Front Suspension:

Telescopic forks, hydraulic damped

Rear Suspension:

Swing-arm, twin shock absorbers

Front Wheel:

19 inch (WM1 rim)

Rear Wheel:

18 inch (WM2 rim) (1962/63)

18 inch (WM3 rim) (1964/65)

Front tyre:

3.00 x 19

Rear tyre:

3.50 x 18 (1962/3)

4.00 x 18 (1964/5)

Brakes:

5.5 in dia. Single leading shoe drum front and rear

Petrol Tank:

2.625 UK gallons (3.15 US gallons or 11.92 litres)

Oil tank:

2.75 UK pints (3.3 US pints or 1.56 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:

1/4 UK pint (0.3 US pints or 0.14 litres)

Electrics

Type:

Lucas Energy Transfer

Voltage:

6

Charging Type:

Alternator / Rectifier

Ignition Timing:

20° BTDC static. 40° fully advanced

Points Gap:

0.014in - 0.016in

Spark Plug:

Champion L7 or equivalent

Spark Plug Gap:

0.020in