NEW!!!! Significantly improved former version of ZDZ 420B4 engine with new cylinders for higher performance and much better cooling and new improved design of crankcase.

Two stroke four cylinder flat model gas engine 420ccm. Suitable for gian scale airplane models with weight over 40kg and wingspan over 4 meters.

Displacement:	420ccm
Weight:	10250g
Bore:	52mm
Stroke:	50mm
RPM range	1000-8500RPM
Ignition:	Proc. controlled 4,8-7V
Fuel mixture N95+rec.oil):	1:35
Recomm. twinblade props:	38x14,38x16, 40x12, 40x14
Recomm. threeblade props:	36x14-18

Click here for 3-view dimms drawing of this engine. 


Example of usage: http://www.youtube.com/watch?v=qCw51cq3-bQ
Plane has over 45kg and propeller used is Biela 39x12