GENERAL DATA.
MARK 29C and 30C
Bore 55 m.m.
Stroke 62 m.m.
Capacity 147 c.c. = 9.0 cu. ins.
Engine Sprocket 23 Teeth - 3/8" Pitch. Clutch Sprocket 51 " 1"
Primary Drive Ratio 2.21-1.
Gearbox Ratios, Mk. 30C ... 1-1, 1.34-1, 2.55-1
... ... ... ... Mk. 29C ... 1-1, 1.35-1, 2.3-1, 3.47-1
Final Drive Sprocket 15 Teeth-1/2" Pitch For Renold Chain No. 110044.
Final Chain Line 2 3/16 ins.
Exhaust Pipe Dia. 1 1/4 ins.
Carburetter, Mk. 30C Villiers Type S.19.
Lubrication, Engine ... Petrol mixture. One part "Castrol" two-stroke Self-Mixing Oil to 16 parts petrol, OR one part "Castrol" 'XL' Oil (S.A.E. 30) to 20 parts petrol.
Lubrication, Gearbox and Chaincase - Castrol "D" Oil (SAE 140) Filled to Level Plugs Provided. ... ... ...
