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DATA.
Model.
Big 4.
16 H.
18
&
ES 2
Cubic Capacity ..............
Bore
..........................
Stroke
..........................
Compression Ratio
Sparking Plug .............
.... 633 c.c.........
.... 82 m/m
.... 120 m/m ....
.... 4.5 - 1
K.L.G. M.80
.... 490 c.c.........
.... 79,gi/m ....
.... 100 m/m ....
.... 4.9 - 1
K.L.G. M.80
.... 490 c.c.
.... 79 m/m
.... 100 m/m
.... 6.6 - 1
.... K.L.G. F.70
Ignition Timing.
Before top, fully advanced
Magneto Points, gap
Plug Points, gap ...............
.... r
........ 012"
........ 015"
.... f t "
........012"
........ 015"
.... |"
........ 012"
........015"
Valve Timing.
Inlet opens before top ....
Exhaust closes after top ....
....
r
....
r
.... A "
.... * "
.... f t "
.... f t "
Tappet Clearance Cold.
Inlet
..........................
Exhaust ..........................
See para. 20 for
........ 004"
........ 006"
Engine Nos. followed
........004"
........ 006"
by letter Q.
Both push rods to
be free to rotate.
Amal Carburetter.
Type
.........................
Main Jet ..........................
Throttle Valve ..............
Needle Position ..............
.... 276 A.T.......
.... 160
.... 6/5
.... Middle
.... 276 A .T.......
.... 170
.... 6/4
.... Middle
.... 276 A.U.
.... 160
.... 6/4
.... Middle
Piston Clearances.
Top of Skirt
...............
........ 0075"
........ 0065"
........ 0067"
........ 0057"
........ 0085"
........ 0075"
Bottom of Sk irt..............
....’ .0055"
........0045"
........ 0047"
........ 0037"
........ 0055"
........ 0045"
Engine Sprocket, Solo ....
Engine Sprocket, Sidecar
.... 19 tooth ....
.... 16 tooth
.... 19 tooth ....
.... 16 tooth
.... 20 tooth
.... 18 tooth
Gear Ratios, Solo
4.9, 5.93, 8.67, 14.6
4.66, 5.64, 8.24, 13.84
Gear Ratios, Sidecar
5.8, 7.02, 10.3, 17.2
5.16, 6.25, 9.14, 15.3
Petrol Tank Capacity ....
S '
2f galls, approx.
Oil Tank Capacity
s '
4 pints approximate
7 s
Gearbox Capacity
^
| pint approximate
Chaincase Capacity
'....
£ pint approximate
Tyre Pressures ...............
'
Front 18lbs.
»
Rear 23lbs.