OS Engines has presented the new competition nitro engine OS Speed B21 ADAM DRAKE EDITION II realized with the collaboration of Adam Drake.

The engine has been updated with a new 16.4mm x 16.55mm crankshaft which improves the driving feeling making it more linear and powerful and a new carburetor compatible with 6.5mm and 7.0mm Venturi. Below the promotional video and the engine specifications.

Spec OS Speed B21 ADAM DRAKE EDITION II

• Type: Nitro 3.49cc
• Bore: 16.4mm
• Stroke: 16.55mm
• Output 2.65 ps / 2.61 hp / 34,000 R.P.M
• Practical rotation speed: 4,000-42,000 R.P.M
• Weight: 353 grams.