O.S. Speed 21X2-M VERS. II Graupner 2802

O.S. SPEED 21X2-M VERS. II Graupner 2802 Description
3.46 cm³ capacity.
The OS Speed 21 XZ-M VERS. II motor is equipped with a water-cooling system.
Particularly well suited for use with racing catamarans and other boats approx. 700 to 950 mm in length.
First OS marine motor of the Speed generation, based on the 21XZ-R Speed onroad. It is a real powerhouse, designed
to deliver the same performance.
The OS Speed 21 XZ-M VERS. II is optimised during the course of factory adjustments in order to fully utilise its potential.
It features a black anodised crankcase and a laser-etched water-cooled head.
Engl. Instructions

• The DLC (diamond-like coating) crankshaft is filled with silicone for more efficient retention
• The O.S. Speed 21X2-M VERS II offers optimum balance in low and medium torque ranges
• The cylinder head is water-cooled
• The 21D big-carb hole facilitates the use of nitro fuel
• An RP7 turbo plug is included in the price

Specification
Width : 45 mm
Distance of screw hole /longitudinal: 21 mm
Carburettor : 21D
All-up weight, approx.: 307,5 g
Height approx.: 66,15 mm
Diameter of fixing hole: 3,2 mm
rpm range, approx.: 4000-45000 U/min
Bore: 16,27 mm
Distance of screw hole / crosswise: 37 mm
Cylinder capacity: 3,5 cm³
Output (kW, PS) at: 2 (2,75) bei 33000 U/min
Stroke: 16,8 mm