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
  • Police Machines
    • The RUC Cubs
  • 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
    • Oil Pumps and Lubrication
    • PRS8 Switch Repair
    • T20 Oil Filter Kit
  • 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!
    • Terrier Tribulations!
    • Brian's Cub Special
    • Sold, Bought, Restored
    • It started with a Cub
    • A Family Connection
    • Cubs & Terriers in the Family
    • Benny's Tiger Cub
    • Tiger Cub Trials!
    • Getting my '59 Cub in '58
  • 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
    • Class of 2016 - 2017
    • Class of 2017 - 2018
    • Class of 2018 - 2019
    • Class of 2019 - 2020
  • Sporting Tales
    • Bonneville Speed Record
    • ISDT Success
    • Success in the Scottish
    • My 1961 International Six Days
  • TC&T Mysteries
    • The Terror
    • Who is this?
    • Mountain Cub Mystery
  • The Bermuda Connection
  • 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
  • Police Machines
    • The RUC Cubs
  • 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
    • Oil Pumps and Lubrication
    • PRS8 Switch Repair
    • T20 Oil Filter Kit
  • 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!
    • Terrier Tribulations!
    • Brian's Cub Special
    • Sold, Bought, Restored
    • It started with a Cub
    • A Family Connection
    • Cubs & Terriers in the Family
    • Benny's Tiger Cub
    • Tiger Cub Trials!
    • Getting my '59 Cub in '58
  • 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
    • Class of 2016 - 2017
    • Class of 2017 - 2018
    • Class of 2018 - 2019
    • Class of 2019 - 2020
  • Sporting Tales
    • Bonneville Speed Record
    • ISDT Success
    • Success in the Scottish
    • My 1961 International Six Days
  • TC&T Mysteries
    • The Terror
    • Who is this?
    • Mountain Cub Mystery
  • The Bermuda Connection
  • Buy - Sell - Swap
www.tigercubandterrier.com
Tiger Cub T20 (& T20J) 1960
Picture
​If 1959 had been all about a major cosmetic restyle, the Tiger Cub of 1960 was mainly about engine improvements.
​
A new 'big valve' cylinder head had appeared with a larger inlet valve and port to help the engine breathe easier. It had been common practice among Cub engine tuners for a number of years and now it was a standard feature. In addition the exhaust port had been moved round by seven degrees, one advantage being the finned exhaust clamp could now be fitted without having to resort to removing the engine locating bolts in order to tilt the engine upwards giving sufficient room to complete the procedure.

Another handy modification was the use of shorter barrel studs, which along with a deeper counterbore in the new design cylinder head and the use of longer cylinder head nuts, enabled the head to be removed with the engine in situ.
Picture
Picture
It wasn't just the top end of the engine that had come in for improvement. A new two-piece crankcase had also been introduced that gave the engine far more rigidity than the one-piece item fitted so far. To go with the new crankcases and to clean up the overall 'look' of the engine, the contact breaker assembly received an internal clamp replacing the previous external one and new design primary and timing covers completed the external transformation.
Internally a new larger capacity oil pump was used and a new slotted timing side bush carrier allowed oil to bleed through to the skew gears.
​
To complete the 1960 T20, wheel sizes increased to 17 inch with a corresponding reduction in gearbox sprocket and the swing-arm changed to one that was wider at the front as per the trials machines.
 
No change to colour schemes for 1960 and Crystal Grey and black livery (UK and other markets) and Aztec Red and black (USA) continued.
 
The T20J Junior Cub of 1960 again mirrored all the changes to the standard T20 Cub except for the fitting of a 9.5mm Zenith carburettor.
 
Specifications for 1960 T20 model
 
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: Zenith 17MXZ-CS5 (with restrictor or Zenith 9.5mm MXZ for T20J)
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
Front Wheel: 17 inch (WM2 rim)
Rear Wheel: 17 inch (WM2 rim)
Front Tyre: 3.25 x 17
Rear Tyre: 3.25 x 17
Brakes: 5.5 in dia. Single leading shoe drum front and rear
Petrol Tank: 3 gallons (13.5 litres)     
Oil tank - 2 3/4 pints
Gearbox - 1/3 pint
Primary chaincase - 1/3 pint
Front Fork: 1/8 pint
 
Electrics
Type: Lucas Ignition Coil
Voltage: 6
Charging Type: Alternator / Rectifier
Ignition Timing: 4 degrees BTDC static. 28 degrees fully advanced
Points Gap: 0.014in - 0.016in
Spark Plug: Champion L7 or equivalent
Spark Plug Gap: 0.025in
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