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James Comet J11. 98cc. 1954-1955

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Frame numbering 1954 - 55.  Prefix J11-
   
Engine Villiers Mk 4F. Capacity 98cc.  47mm x 57mm
Gears Two speed with clutch. Handlebar lever has "trigger".
Frame Single downtube with plunger rear.
Forks Light weight telescopic fork. Plastic gaiters
Tyres 2.25" x 19"
Tyre pressures Front 19 lbs.psi.  Rear 29lb. psi.
Wheel rims Dunlop WMO 36 hole.  Silver painted (Argenized)
Ignition timing ⅛" before top dead centre.
Points gap 0.015"
Plug gap 0.018" - 0.025"
Plug type Original spec. Lodge H14
Carburettor Villiers Type 6/0
Jet size J120
Needle No. 2½ type 6/0
Needle setting 29 / 32" from tip of needle to bottom of slide
Tank capacity 2 approximately.  Use of unleaded fuel will cause no problems
Petroil mixture 16:1 as originally specified. Can be safely reduced to 24:1 with modern oils.
Gearbox capacity Remove oil level screw on side of engine casing and oil filler screw on top of casing.  Fill oil through the filler opening until oil begins to run out through the level plug hole. The correct level of oil is then assured.  Check it regularly.  Castrol "D"  SAE 140
Chaincase capacity Not applicable as the primary chain runs within the gearbox.
Chains Primary chain:  56 pitches. ⅜ x ¼ x 0.225"
Final drive chain: 118 pitches.  ½" x 0.305" x 0.192" wide (Coventry 112045).  Tension movement max.   ⅜" vertical
Sprockets Engine: (crankshaft) 17 teeth  ⅜" pitch.
Gearbox (final drive) 14 teeth ½" pitch
Brakes 4" front.  5" rear.
Bulbs: Direct Main bulb:  6v - 24 / 24w  S.B.C.
Tail lamp:   6v -  3w  (1954 S.C.)  (1955 M.B.C.)
Parking  lamp bulb: 3.5v - 0.15amp M.B.C.
Parking  lamp battery  Ever Ready No. 1289. 
Bulbs: Rectified Main bulb:  6v - 24 / 30w.
Tail lamp:   6v -  3w  M.B.C.
Tail / Stop-light (if fitted): 6v - 18 / 3w B.C.
Parking  lamp bulb: 6v - 3w  M.B.C.
Parking  lamp battery  Ever Ready No. 1289.
Speedo bulb:  6v - 0.17amp M.B.C. 
Battery Lucas type - PUZ7E-9.  6 volt.  12 amp-hours.
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