My First experiment with the Enya Gasoline glow plug
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My First experiment with the Enya Gasoline glow plug
Hi All,
I thought i'd share the results of my first experiment with the Enya Gasoline Glow Plug.
At first glance the plug looks like a normal 4-stroke glow plug, however the thread is different and they will not screw into a normal glow engine cylinder head. The thread is a very fine metric M6 x 0.5 which is not as common as the standard M6x1.0
Enya market their gasoline glow plug engine as a set with a bottle of special oil. They do not say whether this oil is an essential component for the plugs to work. When i ask them directly they do not give a straight answer. They will only say the oil is a special 100% ester biodegradable chemo-sythesis oil (google's translation).
I wanted to see if the plugs will work without the special oil because i don't want to pay hazardous goods shipping fees on top of oil that costs $60 per litre (quart)
I chose to use my NGH 17cc gasser for this experiment. I thought it would be ideal because it's already designed to run gas using a 1/4x32 spark plug so the compression ratio and carb setup would be correct.
Through my local NGH distributor, NGH sent me a blank cylinder head that i drilled to 5.5mm and tapped for the M6 x 0.5 plug.
It should be noted that my engine runs well with the ignition. It has done five 8oz tanks on the break-in stand and is still at the factory rich settings. It does 8,200rpm with a JXF 14x8 and idles at approx 2,200.
The fuel is 95 RON Unleaded which is the same as the 91 PON sold in the USA, with Redline Racing Oil at 30:1
Now on to the experiment.
After swapping to the glow cylinder head i set the radio to the usual starting position and attached the glow ignitor. I hit it with the starter and the engine surprised me when it fired right up literally on the first compression stroke. It ran just fine with the ignitor still attached so i let it warm up some and then removed the ignitor only to have the engine quit within a few seconds.
I put the ignitor back on and started it again only to repeat the same process several times. It wouldn't idle without the ignitor.
I started it again, only this time i set the throttle at mid stick and removed the ignitor and it kept running. It was responding well to throttle changes and achieved the same rpm's.
When I put the stick back to idle it seemed to hang at 3,500 to 4,000 rpm for a few seconds before it gradually slowed down and abruptly quit at about 3,300rpm
So it's early days yet but the signs are encouraging. The plugs worked with commonly available oil and i'm sure with some tuning we could get them to work very well.
My next step is to put the original head on my engine and tune it properly. Then i'll try again to see if that improves the glow plug performance.
I also have several other Ester based synthetics to try. One of them may work better than the racing oil.
I thought i'd share the results of my first experiment with the Enya Gasoline Glow Plug.
At first glance the plug looks like a normal 4-stroke glow plug, however the thread is different and they will not screw into a normal glow engine cylinder head. The thread is a very fine metric M6 x 0.5 which is not as common as the standard M6x1.0
Enya market their gasoline glow plug engine as a set with a bottle of special oil. They do not say whether this oil is an essential component for the plugs to work. When i ask them directly they do not give a straight answer. They will only say the oil is a special 100% ester biodegradable chemo-sythesis oil (google's translation).
I wanted to see if the plugs will work without the special oil because i don't want to pay hazardous goods shipping fees on top of oil that costs $60 per litre (quart)
I chose to use my NGH 17cc gasser for this experiment. I thought it would be ideal because it's already designed to run gas using a 1/4x32 spark plug so the compression ratio and carb setup would be correct.
Through my local NGH distributor, NGH sent me a blank cylinder head that i drilled to 5.5mm and tapped for the M6 x 0.5 plug.
It should be noted that my engine runs well with the ignition. It has done five 8oz tanks on the break-in stand and is still at the factory rich settings. It does 8,200rpm with a JXF 14x8 and idles at approx 2,200.
The fuel is 95 RON Unleaded which is the same as the 91 PON sold in the USA, with Redline Racing Oil at 30:1
Now on to the experiment.
After swapping to the glow cylinder head i set the radio to the usual starting position and attached the glow ignitor. I hit it with the starter and the engine surprised me when it fired right up literally on the first compression stroke. It ran just fine with the ignitor still attached so i let it warm up some and then removed the ignitor only to have the engine quit within a few seconds.
I put the ignitor back on and started it again only to repeat the same process several times. It wouldn't idle without the ignitor.
I started it again, only this time i set the throttle at mid stick and removed the ignitor and it kept running. It was responding well to throttle changes and achieved the same rpm's.
When I put the stick back to idle it seemed to hang at 3,500 to 4,000 rpm for a few seconds before it gradually slowed down and abruptly quit at about 3,300rpm
So it's early days yet but the signs are encouraging. The plugs worked with commonly available oil and i'm sure with some tuning we could get them to work very well.
My next step is to put the original head on my engine and tune it properly. Then i'll try again to see if that improves the glow plug performance.
I also have several other Ester based synthetics to try. One of them may work better than the racing oil.
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RE: My First experiment with the Enya Gasoline glow plug
The oil is special in that its reduces plug fouling. I think you will agree that fouling the plug would be detrimental to a glow plug
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RE: My First experiment with the Enya Gasoline glow plug
So, aside from reducing the plug fouling, does it contribute to the catalytic reaction to keep the plug lit?
That's what I want to know but have yet to get a clear answer.
That's what I want to know but have yet to get a clear answer.
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RE: My First experiment with the Enya Gasoline glow plug
No I doubt it. Esterified oils arejust essentially made from a narrower range of synthesised hydrocarbons so the chances of oil boilin goff and leaving resdiue behind inside the engine is reduced. Having a clean glow coil is more important to allow for heat to be effetively transfered to the fuel air mix.
Carbon build up on the coil with drasticaly shorten the life of the plug. Why not just run a CDI?
Carbon build up on the coil with drasticaly shorten the life of the plug. Why not just run a CDI?
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RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: TimBle
Why not just run a CDI?
Why not just run a CDI?
An engine like the NGH is best suited a .60 sized model because the power output is about the same as a .75 2-stroke or .91 4-stroke.
But the engine weighs a lot more than these so being able to save a 1/2 pound of ignition and battery weight away makes it a viable alternative in the smaller models.
#8
RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: CustomPC
Mainly because i'm a constant tinkerer and love experimenting with this sort of stuff. It breaks the monotony of the same old stuff.
An engine like the NGH is best suited a .60 sized model because the power output is about the same as a .75 2-stroke or .91 4-stroke.
But the engine weighs a lot more than these so being able to save a 1/2 pound of ignition and battery weight away makes it a viable alternative in the smaller models.
ORIGINAL: TimBle
Why not just run a CDI?
Why not just run a CDI?
An engine like the NGH is best suited a .60 sized model because the power output is about the same as a .75 2-stroke or .91 4-stroke.
But the engine weighs a lot more than these so being able to save a 1/2 pound of ignition and battery weight away makes it a viable alternative in the smaller models.
http://www.youtube.com/watch?v=c85M0Rq1TKE
#9
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RE: My First experiment with the Enya Gasoline glow plug
Here's the scoop on Gas/Glow that Captain John mentioned. We've been doing it for years.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
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RE: My First experiment with the Enya Gasoline glow plug
Keep at it [8D] Interested to see how it turns out.
I don't believe a glow plug will foul easily - my little ST40 runs 20% Castor for example! DL50 on 20% castor would be impressively smokey and CM6 plug would goop-up in no time.
The glow timing will be different to the spark ignition - that's maybe why it's not happy just yet.
I wonder WHAT the Enya plug reacts-with in gas/petrol to run?
I don't believe a glow plug will foul easily - my little ST40 runs 20% Castor for example! DL50 on 20% castor would be impressively smokey and CM6 plug would goop-up in no time.
The glow timing will be different to the spark ignition - that's maybe why it's not happy just yet.
I wonder WHAT the Enya plug reacts-with in gas/petrol to run?
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RE: My First experiment with the Enya Gasoline glow plug
it is a controlled hot spot to set of the gasoline.
However fouling with gasoline is a bigger problem than with methanol with has a powerful detergent effect and its only one compound. Gasoline is made up of different hydrocarbons that flash off at different rates. the Staright run Naphtha will have some aromatics that will leave a residue on all hot surfaces.
However fouling with gasoline is a bigger problem than with methanol with has a powerful detergent effect and its only one compound. Gasoline is made up of different hydrocarbons that flash off at different rates. the Staright run Naphtha will have some aromatics that will leave a residue on all hot surfaces.
#13
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RE: My First experiment with the Enya Gasoline glow plug
We have numerous hours on various Gas/Glow engines with no reported problems with glow plugs carboning up. I just disassembled my Super Tiger .90 that I have been running for several years on Gas/Glow. There was a very minor amount of carbon on the piston top, none in the head, and none on the glow plug.
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS "F" plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS "F" plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
#14
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RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: av8tor1977
We have numerous hours on various Gas/Glow engines with no reported problems with glow plugs carboning up. I just disassembled my Super Tiger .90 that I have been running for several years on Gas/Glow. There was a very minor amount of carbon on the piston top, none in the head, and none on the glow plug.
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS ''F'' plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
We have numerous hours on various Gas/Glow engines with no reported problems with glow plugs carboning up. I just disassembled my Super Tiger .90 that I have been running for several years on Gas/Glow. There was a very minor amount of carbon on the piston top, none in the head, and none on the glow plug.
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS ''F'' plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
#15
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RE: My First experiment with the Enya Gasoline glow plug
When running engines on Gas/Glow, we commonly get a 200 to 400 rpm power increase over what the engine would do on gasoline/ignition.
They should respond normally to a tuned pipe, but while I have been wanting to play with some tuned pipes, I just haven't gotten around to it yet. I might make a pipe for this Super Tiger .90 I am cleaning up/rebuilding for a new plane I just about have done. We'll see.... too many projects/ideas, too little time!
Here's a pic of my home-made 50cc twin that runs on Gas/Glow. It's been running for several years now. It runs very nice; idles super slow, starts easy, has great power. The glow power is used for starting only. Sure makes that little twin narrower than spark plugs and caps would.... The pressure tap on the port cylinder and the needle valve on the firewall are for the smoke system.
AV8TOR
They should respond normally to a tuned pipe, but while I have been wanting to play with some tuned pipes, I just haven't gotten around to it yet. I might make a pipe for this Super Tiger .90 I am cleaning up/rebuilding for a new plane I just about have done. We'll see.... too many projects/ideas, too little time!
Here's a pic of my home-made 50cc twin that runs on Gas/Glow. It's been running for several years now. It runs very nice; idles super slow, starts easy, has great power. The glow power is used for starting only. Sure makes that little twin narrower than spark plugs and caps would.... The pressure tap on the port cylinder and the needle valve on the firewall are for the smoke system.
AV8TOR
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RE: My First experiment with the Enya Gasoline glow plug
I am aware of your Gas/Glow thread. I have posted many questions there. Some have been answered, some have been ignored.
If the Enya plug doesn't work i will probably try gas/glow with my NGH engine. I'm just a bit worried that with the engine not having any needle bearings in the rod, that the glow fuel my be too "dry" at the tried and proven mix. Adding more oil would interfere with the known good formula and defeat the purpose of running gas in the first place (cleaner running).
Now, can we please keep this thread on topic, which is the Enya gasoline glow plug for use with normal 2-stroke gasoline mixes.
Thanks
If the Enya plug doesn't work i will probably try gas/glow with my NGH engine. I'm just a bit worried that with the engine not having any needle bearings in the rod, that the glow fuel my be too "dry" at the tried and proven mix. Adding more oil would interfere with the known good formula and defeat the purpose of running gas in the first place (cleaner running).
Now, can we please keep this thread on topic, which is the Enya gasoline glow plug for use with normal 2-stroke gasoline mixes.
Thanks
#18
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RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: av8tor1977
We have numerous hours on various Gas/Glow engines with no reported problems with glow plugs carboning up. I just disassembled my Super Tiger .90 that I have been running for several years on Gas/Glow. There was a very minor amount of carbon on the piston top, none in the head, and none on the glow plug.
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS ''F'' plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
We have numerous hours on various Gas/Glow engines with no reported problems with glow plugs carboning up. I just disassembled my Super Tiger .90 that I have been running for several years on Gas/Glow. There was a very minor amount of carbon on the piston top, none in the head, and none on the glow plug.
For those of you that didn't have a look at the Gas/Glow thread link I posted, it is running a gasoline engine with a glow plug, and a mixture of two parts of premium gasoline to one part of 10% oil, 10% nitro glow fuel. That provides enough methanol for consistent glow plug operation, (we use an OS ''F'' plug), and oil at approximately a 32:1 ratio.
Anyway, once again a good many of us have been running this system for years and have not been experiencing glow plug carbon problems.
http://www.rcuniverse.com/forum/m_80...tm.htm#8009384
AV8TOR
How long does an OSF type glow plug last in this application? In regular 2 stroke piped, large displacement glow application we have been hard pressed to make one last half a season. Also I'm very curious about the hybrid running capability at mid range.....I would hope one gets more low end grunt out of such a set-up, but don't know since I've never run one.
I think that would be a good experiment. I have 30cc piped gasoline engines on hand. I will try to get an adapter and run one and see for myself, but any info is appreciated
Thanks
#19
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RE: My First experiment with the Enya Gasoline glow plug
I made that twin from two Echo 23.6cc engines and a custom crankcase from BME engines. (no longer available)
Glow plug life seems to be from good to excellent.
Better take any other questions to the "Gas/Glow how to" thread.....
AV8TOR
Glow plug life seems to be from good to excellent.
Better take any other questions to the "Gas/Glow how to" thread.....
AV8TOR
#20
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RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: av8tor1977
I made that twin from two Echo 23.6cc engines and a custom crankcase from BME engines. (no longer available)
Glow plug life seems to be from good to excellent.
Better take any other questions to the ''Gas/Glow how to'' thread.....
AV8TOR
I made that twin from two Echo 23.6cc engines and a custom crankcase from BME engines. (no longer available)
Glow plug life seems to be from good to excellent.
Better take any other questions to the ''Gas/Glow how to'' thread.....
AV8TOR
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RE: My First experiment with the Enya Gasoline glow plug
ORIGINAL: TimBle
No I doubt it. Esterified oils arejust essentially made from a narrower range of synthesised hydrocarbons so the chances of oil boilin goff and leaving resdiue behind inside the engine is reduced. Having a clean glow coil is more important to allow for heat to be effetively transfered to the fuel air mix.
Carbon build up on the coil with drasticaly shorten the life of the plug. Why not just run a CDI?
No I doubt it. Esterified oils arejust essentially made from a narrower range of synthesised hydrocarbons so the chances of oil boilin goff and leaving resdiue behind inside the engine is reduced. Having a clean glow coil is more important to allow for heat to be effetively transfered to the fuel air mix.
Carbon build up on the coil with drasticaly shorten the life of the plug. Why not just run a CDI?
And for me, it's also the tinker factor and what we can learn.
This thread will help a lot, thanks.