O.S. Engines 12XZ Speed Spec II - Manual (Page 20)

38
Displacement
Bore
Stroke
Practical R.P.M.
Power output
Weight
THREE VIEW DRAWING
Dimensions (mm)
2.1 cc (0.128 cu.in.)
13.8 mm (0.543 in.)
14.0 mm (0.551 in.)
5,000-44,000 r.p.m.
1.75 ps / 35,000 r.p.m.
220g (7.76 oz.)
25.4
39
70.6
15.1 34.9 29.5
UNF1/4-28
1
11
31.4
4- 3.3
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