Finally found an engine that is able to turn my beautifull Biela 18x10 fw scale prop for the front end of my DO, it is a ZDZ40.
Biella mentions a 30-40 cc engine for this prop, but the 35cc I first bought for it was not able to turn it at all, even the ZDZ now barely gets above 6000rpm now. For me this is perfect, the extra boost from the turbine will defenetly rev the prop much higher in flight.
