OS Engines Speed B21 Ronda Drake Edition 2 .21 Buggy Engine

OS Engines Speed B21 Ronda Drake Edition 2 .21 Buggy Engine

The O.S. SPEED B21 Ronda Drake Edition 2 is an improved version of the previous model, which was developed in collaboration with O.S. international team driver ADAM DRAKE, who is famous for his deep knowledge and sound technical advice.

Features

• Based on the B21 Adam Drake (same specifications as the Adam Drake 3 .21 Buggy Engine)
• By adopting a boost bypass processing for the crankcase, the engine runs more smoothly
• Ronda Drake's image colour, pink anodized aluminium is applied to the cooling head, and carburettor restrictor
• New design is used to reduce weight and lower the centre of gravity and improve driving performance
• By adopting a cover plate with a built-in thrust plate, wear due to interference between the connecting rod and the cover plate during rotation is reduced and engine life is improved
• The inner head uses an O-ring to reduce vibration and improve dust resistance

Product Information

The O.S. Speed B21 Ronda Drake Edition 2 engine is a further refinement of the previous model. It is based on the B21 Adam Drake (same specifications as the Adam Drake 3 .21 Buggy Engine) and features a new pink cooling head and pink carburettor restrictors which are unique to complement Ronda's signature colours and style. Ronda Drake is the wife of Adam Drake and has over 30 years of remote-control racing experience herself.  It’s an excellent choice for both buggy and truck racing as it provides a linear power band, exceptional fuel mileage and tons of overall power.

By adopting a boost bypass processing for the crankcase, the engine runs more smoothly making it even easier to drive and handle. The new design is used to reduce weight and lower the centre of gravity and improve driving performance. 

Specs

Displacement 3.49cc / 0.213 cu.in.

Bore: 16.4mm / 0.646 in.

Stroke: 16.55mm / 0.652 in.

Output 2.65 ps / 2.61 hp / 34,000 r.p.m.

Practical RPM range: 4,000-42,000 r.p.m.

Engine Weight: 350g / 12.35oz