ZDZ 250B2RV-J
New rotary valve twincylinder opposed engine with 250ccm of displacement.

Completely new concept of separated heads allowing optional modification of cylinder head for improved cooling for such applications like helicopters, powered paragliding etc.
 
Double spark plug system is an option for improved power and safety in PPG systems and small ULL planes. 
Here you can download 3-view installation dimmensions in standard PDF file format
	
		
			
Displacement:
			
250ccm
		
		
			
Weight:
			
5500g (7327g with el. starter)
		
		
			
Bore:
			
56mm
		
		
			
Stroke:
			
50mm
		
		
			
RPM range
			
1000-8500ot/min
		
		
			
Ignition: 
			
Processor controlled 4,8-7V
		
		
			
Fuel mixture N95+rec. oil:
			
1:35
		
		
			
Recomm. twinblade props
			
34x16, 36x12, 36x14
		
		
			
Recomm threeblade props:
			
33x12, 33x14, 34x12