ZDZ 420B4-J Moteur 420cc à 4-cylindres (avec allumages électroniques

2013 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.

 

Whole system including ignition was integrated into a "unit" which is now easy to install and user can be sure, that installation of ignitions is done properly. No need to think about how and where to install ignitions. No need to be afraid of temperature of the neither vibrations.

 

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

 

Technical parameters of ZDZ 420B4-J engine 

 

Displacement 420 ccm

Weight 11000g

Bore 52mm

Stroke 50mm

RPM range 1000-8500ot/min

Ignition processor controlled, dampened casing

Spark plugs NGK CM 6 

Spark plug electrodes gap 0,5-0,7mm

Intake system Reed valves

Recommended oil Full synthetic oil for two stroke air cooled engines

Recommended fuel Automotive gas BA 95 or higher

Fuel mixture oil:gas 1:35(break-in) 1:40 (normal run)

Carburettor Walbro WB-27

Normal/Max CHT 160/200 degrees of Celsius

Fuel consumption 9,8l/hr @ 75% power

Propeller configuration Tractor or Pusher

 

Static thrust (twinbaldes)

Fiala prop 40x20 72kg @ 4600RPM

Fiala prop 40x18 74kg @ 4700RPM

Fiala prop 40x16 76kg @ 5000RPM

 

Optional eqiupment 

Electric starter 12V/370W

Electric generator 500W/28V +/-200mV

Belt reduction gear Ratio on demand. (Standard ratio 1:2,7)