model aircraft and tiny diesel motors 45 years ago, but unlike him I
don't still have them!
Here's part of his reply:
The Japanese produce well regarded model aircraft engines, but
practically all of them are glowplug ignition running on
methanol-based fuel.
These are NOT suitable for biodiesel as it will not mix with the
other ingredients.
Model diesel engines, with a compression screw on top, are mostly
made in UK (prominent makes being PAW and Irvine) and Europe (Italy,
Russia, Czech). USA is way down the list but Davies Diesels offer
conversion kits for many popular glow motors. In Japan, I can only
think of the Enya .15 cu in. diesel and I'm not sure this is a
current model.
The Chinese manufacturers are known for cloning engines from all
over, including some replicas of classic British diesels. Now that
they have come round to understanding metallurgy (expansion,
stiffness, wear properties) and the meaning of machining tolerances,
these actually work pretty well, if not better than the originals. I
suggest you seek out replica Oliver Tiger, Rivers Silver Arrow etc.
Chinese diesels.
They are 2.5 cc and there are loads of airframe designs wich will
suit them. There is also an original Chinese design called Silver
Swallow. The original was crap, but I have heard that they have
re-vamped it to good effect.
Here are some sites:
http://www.flairproducts.co.uk/Engines/CS_Diesels/VintageDiesels.htm
Vintage Diesel Engines
http://www.progress.charitydays.co.uk/
Progress Aero Works - Precision Engineering - Home of Eifflaender's
PAW diesel engines
We'll get one of these diesel motors and build a plane for it, very
useful for demos.
Best
Keith
Can you make a model aircraft engine run on biofuel? Jeffrey
Hello Jeffrey
Yes.
Well, mostly.
From: "David Teal" <[EMAIL PROTECTED]>
Date: Mon, 16 Aug 2004
Subject: Re: [wastewatts] Kero and Vegie oil mix ( was Re: Ethanol
/ Methanol ( long ) )
Another field where we use kero (paraffin over here) mixed with
vegoil (castor) is model aircraft diesel engines. The usual mix is
30% castor, 30% ether and 40 % paraffin. I have a good number of
these engines and have been operating them for 45 years. I did some
trials a year or two back and mixed 70% biodiesel with 30% ether
(no oil at all). Several engines ran perfectly well on this mix
with no overheating or other sign of lack of lubrication. This
tends to confirm poor lubricity of 'kero'. Aeolus
These are diesels. The glowplug motors (not diesels) run on methanol
and a brew of other stuff, some of it not very nice. I don't know if
you could substitute ethanol, but I think you'd need the other stuff
anyway.
Best wishes
Keith
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