O.S. Engines 50SX - Manual (Page 39)

MAX-
50SX
RING
Displacement
Bore
Stroke
Practical R.P.M.
Power output
Weight 8.17 cc (0.499 cu.in.)
22.0mm (0.866 in.)
21.5mm (0.847 in.)
2,000
~
20,000 r.p.m.
1.8 bhp / 17,000 r.p.m.
390g (13.76 oz.)
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SPECIFICATIONS
Dimensions(mm)
UNF1/4-28
52
36
44
17.5
60.7 25
18.3
28
70.5
121
7.5
37.7
21
38