www.tigercubandterrier.com
  • Welcome
  • Introduction
  • The Story begins...
  • An Interview with Mr Turner
  • Model information
    • Terrier T15
    • Tiger Cub T20 >
      • 1954/55
      • 1956
      • 1957
      • 1958
      • 1959
      • 1960
      • 1961/62
      • 1963-on
    • Competition Cub T20C
    • Sports Cub T20S
    • Woods Cub T20W
    • Sports Lights Cub T20SL
    • Trials Cub T20T
    • Street Scrambler T20SS
    • Scrambler T20SR/T20SC
    • Trials & Scrambler TR20/TS20
    • Sports Home Cub T20SH
    • Mountain Cub T20SM/T20M
    • War Department (T20WD/T20M WD
    • Bantam Cub T20B
    • T20B Super Cub
  • Buyer's Guide
  • Resources
  • Technical
    • Machine Numbers
    • Gear Clusters
    • Front Forks
    • Front Fork Oil Change
    • Condensers
    • Finding T.D.C.
    • External Oil Filter
    • Lucas Energy Transfer
    • 12V Conversion
    • Fitting Indicators to a Tiger Cub
    • Fitting a Craven Luggage Rack
    • Spark Plugs and Sparks
    • Know your Alternator
  • Your Stories
    • My Wee Cub
    • Denny's Terrier
    • A T20C Story
    • TR20 Cub Sorted
    • Saving Sylvia
    • My 1959 Tiger Cub
    • My First Restoration
    • Found in a Scrap Yard
    • My First Bike
    • Brand new out of the Box
    • On the Road after 40 years
    • First bike I ever Rode
    • The' Tarbuk' Conversion
    • A Tiger Cub in a Box
    • Aunt Tiny
    • Well-travelled Terrier
    • Mashooq's Tiger Cub
    • 48 Years with my Cub
    • Ready for the Arbuthnot
    • My Collection of Cubs
    • Mountain Cub and Cafe tales
    • My favourite Cub of all
    • A Cub in Norway
    • Beginning of a Terrier Restoration
    • An Ambush of Cubs
    • A T20C Cub (probably!)
    • A Moment Frozen in Time
    • Finally after 56 years!
    • Still riding Cubs after 60 years
    • A Lakeland Venture
    • Back to my Teens!
  • The Princeton Cubs
    • Class of 2009 - 2010
    • Class of 2010 - 2011
    • Class of 2011 - 2012
    • Class of 2012 - 2013
    • Class of 2013 - 2014
    • Class of 2014 -2015
    • Class of 2015 - 2016
  • Machines in Competition
    • Bonneville Speed Record
    • ISDT Success
    • Success in the Scottish
  • TC&T Mysteries
    • The Terror
    • Who is this?
  • Buy - Sell - Swap
  • Welcome
  • Introduction
  • The Story begins...
  • An Interview with Mr Turner
  • Model information
    • Terrier T15
    • Tiger Cub T20 >
      • 1954/55
      • 1956
      • 1957
      • 1958
      • 1959
      • 1960
      • 1961/62
      • 1963-on
    • Competition Cub T20C
    • Sports Cub T20S
    • Woods Cub T20W
    • Sports Lights Cub T20SL
    • Trials Cub T20T
    • Street Scrambler T20SS
    • Scrambler T20SR/T20SC
    • Trials & Scrambler TR20/TS20
    • Sports Home Cub T20SH
    • Mountain Cub T20SM/T20M
    • War Department (T20WD/T20M WD
    • Bantam Cub T20B
    • T20B Super Cub
  • Buyer's Guide
  • Resources
  • Technical
    • Machine Numbers
    • Gear Clusters
    • Front Forks
    • Front Fork Oil Change
    • Condensers
    • Finding T.D.C.
    • External Oil Filter
    • Lucas Energy Transfer
    • 12V Conversion
    • Fitting Indicators to a Tiger Cub
    • Fitting a Craven Luggage Rack
    • Spark Plugs and Sparks
    • Know your Alternator
  • Your Stories
    • My Wee Cub
    • Denny's Terrier
    • A T20C Story
    • TR20 Cub Sorted
    • Saving Sylvia
    • My 1959 Tiger Cub
    • My First Restoration
    • Found in a Scrap Yard
    • My First Bike
    • Brand new out of the Box
    • On the Road after 40 years
    • First bike I ever Rode
    • The' Tarbuk' Conversion
    • A Tiger Cub in a Box
    • Aunt Tiny
    • Well-travelled Terrier
    • Mashooq's Tiger Cub
    • 48 Years with my Cub
    • Ready for the Arbuthnot
    • My Collection of Cubs
    • Mountain Cub and Cafe tales
    • My favourite Cub of all
    • A Cub in Norway
    • Beginning of a Terrier Restoration
    • An Ambush of Cubs
    • A T20C Cub (probably!)
    • A Moment Frozen in Time
    • Finally after 56 years!
    • Still riding Cubs after 60 years
    • A Lakeland Venture
    • Back to my Teens!
  • The Princeton Cubs
    • Class of 2009 - 2010
    • Class of 2010 - 2011
    • Class of 2011 - 2012
    • Class of 2012 - 2013
    • Class of 2013 - 2014
    • Class of 2014 -2015
    • Class of 2015 - 2016
  • Machines in Competition
    • Bonneville Speed Record
    • ISDT Success
    • Success in the Scottish
  • TC&T Mysteries
    • The Terror
    • Who is this?
  • Buy - Sell - Swap
www.tigercubandterrier.com
Tiger Cub T20S 1959/61
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​Cubs Sweep the "Scottish" proclaimed the headline in 'The Motor Cycle' and unsurprisingly, given the success the Tiger Cub was having in the field of sporting and competition events worldwide, a new model, the T20S was released in 1959. Further building on the formula of the T20C model, the T20S (Sports Cub) was to change people's perception of lightweight motorcycles and set a trend that's still prevalent today. Lightweight go anywhere trail, off road and adventure bikes.
 
The T20S could be ordered in three different guises, but all had a high level exhaust that routed outside the subframe, a crankcase undershield, heavyweight (internally sprung) forks, energy transfer ignition system enabling the machine to be run without a battery, quickly detachable headlight (if fitted), high performance valve springs, large inlet valve and the 'R' camshaft. A side stand only was fitted (no centre stand).
​Standard/Road specification with lights, road tyres, small toolbox, 'D' shaped single instrument speedometer or round speedometer and tacho,  9:1 piston, the 'R' camshaft, close-ratio gears, 15/16 inch Amal Monobloc 376/272 or Zenith carburettor and silencer.

Trials specification, no lights, trials tyres, optional speedometer, 7:1 piston, 'R' camshaft, wide-ratio gears, silencer and 7/8 inch Amal Monobloc 332 or Zenith carburettor.

​Scrambles/Racing specification, this machine was fitted with no lights, speedometer, horn or number plates although a tachometer was an option (on later models). It had full scramble tyres, 9:1 piston, the 'R' cam, close-ratio or extra close-ration gear cluster, exhaust pipe extension (replacing the silencer) and a Monobloc 376/217 carburettor with remote float chamber and larger size main jet.
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A two-tone colour scheme (1959) was standard of Ivory and Azure Blue (UK, USA and other markets) and Aztec Red (USA). Same for 1960 with the exception of the dropping of the Aztec Red livery.
1961 models were in Ruby Red and Silver Sheen (Ruby Red also known as Bright Amaranth Red for the USA).
 
Specifications for 1959/61
 
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 on Trials spec)
Power: 16bhp @ 6700 rpm
Carburettor: Various depending on spec. 15/16 inch Amal Monobloc 376/272, Zenith, 7/8 inch Amal Monobloc 332, Monobloc 376/217 carburettor with remote float chamber
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
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
 
Electrics
Type: Lucas Energy Transfer
Voltage: 6
Charging Type: RM 13 Alternator
Ignition Timing: 7:1 piston 8 degrees BTDC static. 28 degrees fully advanced. 9:1 piston 16 degrees BTDC static. 40 degrees fully advanced
Points Gap: 0.014in - 0.016in
Spark Plug: Champion L5, L7, LA11 or equivalent
Spark Plug Gap: 0.020in

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