By basing the cooling of the crankcase on the air outside, in order to obtain a constant temperature when completing a circuit (even though the flow will vary), the carburetion is should remain more constant and the performance levels should be consistent.
Moreover, the fact that there is a flow of air from the outside between the crankshaft and the gearbox housing, instead of an inner flow of water, isolates the two parts of the crankcase much more, which is good for the crankshaft, which normally tends to heat up because it receives heat from the gearbox, reducing its efficiency. Furthermore, the air flow exits from under the exhaust, helping to cool the most critical part of the cylinder. The cooling water enters the cylinder on the exhaust side, improving the regulation of the pressure waves that are generated in this area. In any case, it has a cap that allows, where necessary, changes to be made to the flow of cooling water.
The Vortex revolution also involves the cylinder: the cylinder is always tilted forward in new generation engines; with the RKZ, it is instead installed in a fully vertical position. A solution that, according to the company, allows the flows to be optimised.