This is the following generation of the same engine.
It has such a fragile feel......I wouldn't "Fly Right Into Ground" with it....

Beautiful engines though...

So guys, what are the attachments on the backplate for? some kind of timer/pressure release? Might be the Acronym Selector Switch?

Integral fuel tank - feed and vent. Engine shown - Frog 100 Mk2 - is set up for inverted running (as supplied from the factory) the other cap usually having a spring loaded fuel cut-off which was more trouble than it was worth .... Both caps could be switched for upright mountin, of course.

Thanks, Apple - I couldn't see how they would machine the case if a tank was in there, as it appears to be only the front bearing assembly closing off the crankcase - but I guess that circular plate on the back is some sort of press-fit to form the tank.
Two diametrically opposed bolts, crossing the exhaust, holding it all together! Character-building!

You should go to the trouble of making a piston and your plane doesnt move , thats character building

Are there any diesels of between 4.5cc and 5.0cc still in production anywhere today? I'm aware of the Clan 0.48 and the PAW 0.55. Is there anything else comparable to the ED Baby, DC Dart etc. that is produced in volume?

(The MP Jet 040 is 0.6cc but comes close, and the Boddo CS Mills 0.5 is no more).

Regards,

DB

Here are some . . . .

Mark

"Refining" my so called collection.....sold a couple of less interesting (to me) engines, and a new guy moves in....this ED 1.46 Hornet...


A question to you all:
What do you consider beeing the most appropriate model - in all senses - for this engine...?
(I have an idea, but I'll keep it to myself for a while...)

Mercury Matador plan shows a Hornet.
Anything that takes a Bee will fit the Hornet, just s little bit more pep and a shorter run on the tank.

zl3vml, thanks for the updates. MVVs still has a .40 and .60 diesel.

Davis diesel heads come for many newer engines.

More info here,
http://www.davisdieseldevelopment.com/gallery/index.htm

Enya makes a .25
http://www.enya-engine.com/store/ind...326e97bbad1659

Gluehand, how much power is available? Give us a prop size and rpm ( ie with an 8x4 at 10k), wing area and weight and I'll give you a PF. That way you can get an idea of just how big and heavy you can go with the power.

Originally Posted by Gluehand

"Refining" my so called collection.....sold a couple of less interesting (to me) engines, and a new guy moves in....this ED 1.46 Hornet...


A question to you all:
What do you consider beeing the most appropriate model - in all senses - for this engine...?
(I have an idea, but I'll keep it to myself for a while...)

If you want a competition type model a Stomper or Eliminator might do the trick, or if 'for fun' a Madcap or 44in Tomboy would be good.

There are a lot of UK models of the Hornet era that would suit.

Gluehand, how much power is available?

If we are to beleive old test results, the ED Hornet is a fairly typical "sport" 1.5 cc diesel of its time.
Apart from leaving max. BHP at a slightly lower than average RPM, it doesn't really stand out from its contemporary "mates"....

-----------------------BHP---RPM
Frog 1.49 reed valve .122 / 12750
Frog 150 .120 / 13000
Allbon Sabre .120 / 13000
ED Hornet .148 / 10500
AM 15 .152 / 14000
Elfin 149 BB .158 / 13600
Taipan 1.5 cc .120 / 11250

My brother's hornet flew the kk Phantom very well indeed in about 1956 and for a very short time I used it to fly leo shulman's banshee allbeit about 7 or 8 years ago.

Has anyone ever run one of those soft "Jello" Keil Kraft Tru-Flex propellers? Obviously, you wouldn't try it on a PAW Combat Special, but are they OK for the slow revving engines from the same era, eg. ED Comp. Special? I presume that they were just as floppy back in the early 1950's as they are now. BOB