ED Hunter 3.5 cc mk IV

Model E.D. 3.46 DC HUNTER Mk. VI 

Manufacturer Electronic Developments, Ltd., England

Distributed by E.D., Surbiton, Surrey, England

Series / Serial No. 4122/9

YOM 1949

Displacement 0.211 cu. in. (3.46 D.C.)

Diameter 0.656 in. (21/32 in.) (16.66 mm.)

Stroke .625 in. (5/8 in.) (15.88 mm.)

Power output 0.25 HP @ 10,000 RPM

Diesel Power Class

Cycle 2

Adjustable Carburetor type (with primitive speed control)

Admission rear rotary valve

Crankshaft on bronze Journal bearing

Fuel: / Oil / Kerosene/ /Ether 

Condition well used but serviceable

Comments Classic English style, very solid construction and rear rotary valve. Steel sleeve

On 21th September 1954 ED prepared an RC Model Airplane and flew it nonstop from England to France from a chase plane

After 102 minutes airborne it arrived over Calle in France

My engine is equipped with a rare optional linked double butterfly throttle arrangement 

Shown below 

Its a very massive engine well made with lots of torque

Comments:

Published on 1 Jan 2013 Another British great and impressive diesel.The Hunter 3.5 cc. is a very powerful and well made model diesel engine in its day..It was made in different variations:.my engine is very old from 1949 but has zero play in the main bearings, or in the connecting rod. With only minor play in the wrist pin and weak compression due its age and running hours, but still a easy starter and ready to turn big props with ease. The E.D. company in Surrey made a long list of very interesting engines. Its the longest existing model engine factory in the UK. The range of there types of engines is endless...Who hasn't heard of the Bee's 1 cc? The Comp.Special and so on... The E.D. Racer 2.49 will be also soon shown and documented in my channel. Also a team-racer with great performance and therefor a great reputation. Thanks again to Modelenginenews.org for their treasure of information without which would have made my documentation on the background impossible. Its a highly recommended website, if you are interested in old model engines.I get "lost" there and spend many hours browsing...and find always something to focus my passion for this hobby. Also there you can find many tips how to restore your vintage engines. Thanks for interest and till soon. More great engines from my collection will be showing here. Ratings and comments are welcome!

http://youtu.be/uUrvE8IlUZw

 
Something a little different here, we are looking for some help to identify the origin of this mystery engine.

All my reference books for Czech and other European countries were of no help and after my lenthy research, it still remains a mystery engine to me. 

 Welcome back to Peter's Engine collection for the running of a beautiful old long-stroke diesel which we found on Ebay.de. Sold as maybe a Czech engine but it could be anything as the cylinder looks like it could be a copy of the French Micron.

 We did't open it up for measurements but judging from its size at a guess I would say its about 3.5 cc's. The best lead to its origin is another mystery engine offered on Ebay.uk and described as a possible Jiri Patrman engine. Both engines seem to have very similar looking fuel tank designs.

I am even not sure if it is a replica engine or the genuine thing, its serial number (19) is sramped on the backside of the prop-driver.

 OK! Lets bring it outside and see if we can make it smoke.