ZDZ 420B4-J
Discontinued. The new generation coming in 09/2021
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.
The whole system including ignition was integrated into a "unit" which is now easy to install and the 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 the temperature of the 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.
You can watch the video with this engine in flight on this link
PLEASE NOTE, that you have to view this file in the Acrobat reader application, not in the integrated browser PDF viewer.
Technical parameters of ZDZ 420B4-J engine
Displacement |
420 ccm |
Weight |
10030g |
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) |