Orcan RSR-MH 2.1cc nitro on-road engine

SMI from Germany have introduced their new Orcan RSR-MH 2.1cc competition nitro on-road engine. Based on the popular RSR3-MH Sound of Racing engine, the RSR-MH has been upgraded and reminded for 2018. The most prominent feature of the are power plant is a shim that is located under the sleeve that can be added or removed to change the timing and thus the performance characteristics. With the shim fitted, the RSR-MH’s timing is set up exactly like the 2017 RSR3-MH, making it perfect for medium-sized and large tracks. Removing the shim changes the timing to deliver outstanding drivability and extra torque. This also reduces fuel consumption, restricts the maximum RPM and thus limits top speed. As on previous models, the carburettor comes complete with insulating bushing. In addition, modified air intake characteristics deliver lightning fast responses to throttle input. The distinctive outer of the new motor has an aluminium-coloured cooling head engraved in grey with the insignia Orcan RSR-MH. The engine is a limited edition items of which only 44 units are available.

Specifications w/shim:
– Displacement: 2.11 cc
– Ports: 3
– Output: 1.62 hp at 42,000 rpm
– Range: 5,000-44,000 rpm
– Maximum: 50,000 rpm

Specifications w o/shim
– Displacement: 2.11 cc
– Ports: 3
– Output: 1.62 hp at 40,000 rpm
– Range: 4,700-43,000 rpm
– Maximum: 48,000 rpm

Source: SMI [smi-motorsport.de]