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ORIGINAL: earlwb

The engine uses a standard long glow plug with no idle bar. You can also use the long RC idle bar glow plug if you don't have the other type.
If you were in the USA I would suggest a FOX long or long RC glow plug.

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ORIGINAL: earlwb

I took a look on HobbyKing's website and I was surprised in that they were not selling glow plugs. Most unusual, they sell everything else.
You would think that someone inChina was making glow plugs.
I see they have quite a few hobby shops inEgypt, it might be easier to just buy from them.
for example:
http://www.hobby25.com/
or
http://www.rchobby-egypt.com/

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ORIGINAL: earlwb

You don't have any local hobby shops? It seems like there ought to be quite a few hobby shops in Egypt.


Just for your general information.

There are basically three heat ranges of glow plugs, a hot, medium and a cold plug. Some brands might have a few more heat ranges in between. Most engines for sport useage only need the medium heat range glow plug. A cold plug would tend to be for high rpm racing applications, and a hot plug maybe for engines that have a need for it due to lower rpms or power strokes or compression ratios, such as the 4 cycle engines.

Now the short reach versus long reach glow plugs, if the engine is a .25 (or 3.5cc) size or smaller in displacement, it uses a short reach plug.
Some newer bored out .25's like the .32's and .36's use a short reach plug too. But old style large crankcase engines like the .29's and .35's use the long reach plug. All engines 40 and above use the long reach glow plug.
Some old antique engines with dual plugs may run both, one short reach and one long reach glow plug.

Now then there are some special glow plugs made just for 4 cycle engines. These have a machined shoulder or step at the bottom of the glow plug to fit a special recessed part in the glow plug hole on the engine. OS is normally the engine design that uses this special shaped glow plug. A regular long glow plug will bottom out instead of threading all the way down. As OS didn't drill and tap the glow plug hole all the way through the head.

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ORIGINAL: earlwb

...or the Tower brand long glow plugs.

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ORIGINAL: Ken Kehlet

Hi,

Many "Foreign" model airplane engines are shipped without a Glow Plug and without the carburetor installed. The company that manufacturers the engine pays less Exportation Fees because the engine is not fully assembled.

The import company pays less Import Tax, because the engine is not assembled and is not yet a completed ready to run engine- (less the Glow Plug).

The "Glow Plug" was invented in USA in 1947 by Ray Arden. It caused the downfall of Small Spark Ignition Model Airplane Engines.

The Universal Glow Plug THREAD SIZE that is available here in USA is 1/4 X 28.

Some countries, Brazil for example, charge as much as 300% Import Duty on Model Airplane engines unless the package is marked as a GIFT, Unassembled, and the Value is marked at much less than the engine is worth. In some countries, the Customs Office has been known for holding Items until a "Liberation" price is agreed upon.

Here in the USA, our commercially made Glow Fuels contain from 5%-50% Nitro Methane. Most other countries use FAI Fuel, or "0%" Nitro in their Glow engines because Nitro Methane is very expensive or not available at all.

Glow engines running "0%" Nitro require different head shims and spacers to run properly on 0% Nitro Fuel. Maybe a different heat range of Glow Plug also.

The LEO Engine is a good Sport Engine. About the same quality and durability as a MAGNU ASP, BRAT, Thunder Tiger, or Bluebird. Maybe not as good as a O.S. Engine, but the price is well below the cost of aO.S. engine.

Regards,
Ken

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ORIGINAL: Ken Kehlet


The LEO Engine is a good Sport Engine. About the same quality and durability as a MAGNU ASP, BRAT, Thunder Tiger, or Bluebird. Maybe not as good as a O.S. Engine, but the price is well below the cost of aO.S. engine.

Regards,
Ken

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