MOTOR OS SPEED B21 ADAM DRAKE EDITION 4 1FH00

O.S. Speed B21 Engine Adam Drake Edition

Overview

• “O.S. is passionate about winning and is the proven choice of champions. Working with the engineers at O.S. to develop the New B21 Adam Drake engine was amazing. Our goal was to provide customers with a configuration that is exclusive to O.S. and provides the power, run-time, and drivability to be used with both buggies and truggies. The B21AD uses the proven, easy-to-tune 21J carburetor, O.S. P3 Gold glow plug, ceramic rear ball bearing and lightweight cooling head. The DLC-coated crankshaft features two tungsten counterweights for smooth power delivery.

Specifications:

Bore

• 0.65 in (16.4 mm)

Crankshaft Threads

• UNF1/4-28

Crankshaft Type

• Threaded

Cylinders

• Single

Displacement

• 0.213 cu in (3.49 cc)

Plug Type

• Speed P3 Gold Glow Plug

Power Type

• Glow

Product Height

• 3.2 in (81.5 mm)

Product Length

• 3.5 in (90 mm) from backplate to end of crankshaft

Product Width

• 1.77 in (45 mm) at mounting tabs

RPM Range

• 4,000 - 42,000 rpm

Stroke

• 0.65 in (16.55 mm)

Total Weight

• 12.45 oz (353 g)