OS Speed R2105 3.5cc Track + Line TR02 Engine - Presentation:
The new OS SPEED R2105 engine is based on the version used during the last world championships in the United States. This engine is based on the R2104 architecture but the majority of elements have been improved with the hope of winning a second world title this year as the race will take place in Japan.
- Piston sleeve with 9 transfers with new diagrams increasing the torque on the track with strong grip.
- Increase in the diameter of the counterweight on the crankshaft (Dia 4 to 4.5mm) allowing a smoother speed increase range.
- Cylinder head with polished mirror finish (transparent anodizing to protect the material)
- Crankcase cap with metal insert limiting friction between the connecting rod and the cap.
- 21M triple adjustment carburetor. Richness screw with double O-rings facilitating adjustment on long runs
- The new carburetion also provides a gain in torque at all speeds.
OS Engine Speed R2105 3.5cc Track + Line TR02 - Features:
- Displacement: 3.49cc
- Bore: 16.08mm
- Stroke: 17.20mm
- Power: 2.76 HP /35,000 rpm
- Operating speed: 4,000 – 45,000 rpm
- Weight: 345g
