Graviman
Aren't we running circles here ?
1. Wankel versus MYT : same sealing problems ?
2. (Diesel) in line versus radial : why did aviation petrol engines abandon radial designs despite of the weight and cooling advantages ?
3. Two stroke loop > Two stroke uniflow > Four stroke : why are all racing engines moving to Four stroke ?. I would put uniflow in between 2 and 4-stroke: better but not fully efficiency, but added weight, height and complexity in line with 4-stroke.
From the specs it appears to me that Zoche could power for instance a R44 type heli, without applying unproven techniques, need we more ?
The key may still be (proven) reliability, given the fact that even the current 'antique robust' engines are quite oversized. Imhb, that is what Thielert among others will need to prove.
Don't read me wrong if this may look like a argument for no change, I am driving 7 years the wonderfully efficient CDI-engines with lots of torque and would not want to go back..
d3