RaerDesign

Engine.

The future of the racing two-stroke engine, first divulged by ex-Aprilia engineers, is the twin rotary disc engine (Engine pics, 1 & 2). This design of engine can be made fuel perfectly at all RPMs – a first for any racing two-stroke.

The reed valve engine is restrictive to gas flow, requires energy to open the reed petals, which makes them slow to open, and slow to close the reed petals, if they close at all. Whereas the single rotary disc engine only works perfectly over a limited RPM range to which the disc is timed. Neither can fuel a racing engine perfectly whereas RaerDesign has the answer to perfect fuelling with a design that is presently being tested on a twin rotary disc engine. This should be a breakthrough design.

The current practice in 125cc MotoGP of a single rotary disc feeding the engine at the rear of the cylinder is a design which gives a marginal increase in power spread but at a cost; the extra drive mechanisms to turn the disc rob a small amount of engine power to achieve this. Once again, the disc timing is only set to work perfectly for a small RPM range.

For interested parties in producing a MotoGP 125cc with this future technology, please get in contact.