OS SPEED B21 ADAM DRAKE EDITION
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We are proud to announce you a new special edition OS SPEED B21 Adam Drake edition.
OS SPEED B21 ADAM DRAKE EDITION
Code number 1A20C (engine only)
Code number 1A20B combo set (T-2090SC and 85mm long manifold)
Specifications---------------------------
Displacement： 3.49cc / 0.213 cu.in.
Bore: 16.4mm / 0.646 in.
Stroke: 16.55mm / 0.652 in.
Practical r.p.m.Range: 4,000-42,000 r.p.m.
Output 2.65 ps / 2.61 hp / 34,000 r.p.m.
Weight: 353g / 12.45oz
Features:
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Designed according to Adam Drake's advice and taste.
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New design cylinder liner with new porting
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New design crankshaft with double tungsten counter weight
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New bore x stroke (see the attached specifications)
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Carburetor reducers are 6.5mm and 8.0mm to suit both buggy and truggy
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P3 GOLD plug is used for more consistent idling.
