ZDZ 250B2-J

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250b2j

New reed 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.

Displacement: 250ccm
Weight: 5700g
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:  34×16, 36×12, 36×14
Recomm threeblade props: 33×12, 33×14, 34×12