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ZDZ ENGINES

real power for your model airplane, PPG, Ull and many more applications

ZDZ ENGINES

ZDZ 420B4-JS

Discontinued. The new generation coming in 09/2021

- version with electric starter

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.

You can watch video with this engine on this link

Here you can download Empty shell of ZDZ 420B4-JS in 3d .STEP file


Technical parameters of ZDZ 420B4-J engine 

Displacement

420 ccm

Weight

12250g

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 generator

500W/28V +/-200mV

Belt reduction gear

Ratio on demand. (Standard ratio 1:2,7)
ZDZ 420B4-JS

News

22.05.2020: New ZDZ 210R2-J CHAMPION released and added to our website.

See more here.

27.11.2019: New distributors in Finland and United Arab Emirates

More details on our facebook or in contacts

28.5.2019: ZDZ 500B4-JSR added to our website 

The biggest engine of ZDZ line now optionally equipped by belt reduction gear. Check this beast in QUAD section. 

13.2.2019: New prices set for engines in eshop.

The most of bigger engines are now cheaper. Go and check, register your engine in our form (see in the center of page) and get even lower price for your next purchase.  

13.1.2017: Second service and support center in Czech Republic/ druhé středisko  servisu a podpory pro ČR

RC modely-PH
Václavské nám. 254
Kutná Hora
284 01
tel 777152293 email:
petrhencl@seznam.cz

  

26.09.2015: New videos added 

 

07.02.2015: Pages update 

Dear Friends,
since yesterday 7PM till today 11Am, we have problems with email servers forwarding because of changing and adding domain names into our systems. If you sent anything within that period and received returning message, please forward your message once again.
Thank you and sorry for inconveniece.

04.02.2015: Pages update 

New distributor for BENELUX and UAE, see contacts-distributors for details. 

01.02.2015: Pages update 

New items added to the shop. especially spare parts were significantly updated and filled. And more to come........

31.01.2015: Pages update 

ZDZ 90RV-J,  ZDZ 112B2RV-Jch, ZDZ 180B2RV-Jch, ZDZ 250B2RV-J and ZDZ 224B4-J pages  update with new animation and downloadable 3D model where you can measure anything from installation dimms.

Also new items were added into spare parts section in eshop. 

08.01.2015: E-shop filled with all engines. 

Since today for those countries where we do not have oficiaal dirstributor our customers can order engines directly from our eshop. Soon we will add parts and accessories to it as well. 

20.12.2014: ZDZ 112B2RV-J Champion

Already well known for its smooth run and awesome power to weight ratio two stroke 112ccm opposed twincylinder model gas engine with procesor controlled ignition. Now fully CNC made crankcase and backplate out of 7075 aluminium alloy so very clean design bringing better quality as well. Weight increased compared to former 112B2RV-J is only 50 grams. 

ZDZ 112B2RV-J Champion

17.12.2014: Technical support in France

We have agreed with one of our most experienced pilots and friend Nicolas Gastaldi, that he will kindly support users in France. In case you have a problem with setup or tuning the engine or need advice, please contact Nico on email nicogasta@hotmail.com. Of course you can contact us directly as well, but we speak only english unfortunatelly. Thank you Nico for your help and very good representation of ZDZ engines at all. 

ZDZ 180B2RV-J  Champion finally available.

This the most powerfull engine in its class now comes with much nicer design with fully CNC machined crankcase and backplate and some other modifications like forged steel con rods to bring super long lasting power and durability.  

 ZDZ 180B2RV-J CHAMPION