OS SPEED 21 XZ-R Graupner 2792

OS SPEED 21 XZ-R Graupner 2792 Description
The OS SPEED 21 XZ-R motor is the tuned variant of the 21 XZ-R Vers. II and was developed especially for the highest onroad standards in the 1:8 scale. Maximum performance and top OS workmanship are the hallmarks of these racers. Equipped with the newly revised 21M carburettor, the RP7 spark plug for turbo combustion chambers, and a special, extremely lightweight cooling head, it leaves nothing to be desired. The crankshaft is also precisely balanced and coated for maximum concentricity and very high revs per minute.

Specification
Width : 45 mm
Shaft thread: 1/4"-28 UNF
Distance of screw hole /longitudinal: 21 mm
Carburettor : 21M
All-up weight, approx.: 343 g
Height approx.: - mm
Recommended for : Onroad models M 1:8
Diameter of fixing hole: 3,3 mm
rpm range, approx.: 4000-45000 U/min
Bore: 16,27 mm
Distance of screw hole / crosswise: 37 mm
Cylinder capacity: 3,49 cm³
Output (kW, PS) at: 2,2 (2,76) at 33000 U/min
Length to hub: 69,9 mm
Stroke: 16,8 mm