gas fuel with glo plug no ignition
05-25-2006 | 12:41 AM
#676
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From: tijuanaBaja California, MEXICO
RE: gas fuel with glo plug no ignition
To use a 15% glow fuel that usually contains an 18% content of oil you will need to reduce it first with methanol in the following manner:
2 parts of 15% glow fuel and 1 part Methanol = a 10% glow fuel
with 12% oil.
Now you take a 1 part of this mixture and mix it with 2 parts of 91
octane gasoline and you'll end up witha fuel that contains:
3.33% nitro
4.0% oil
26.0% Methanol
66.66% Gasoline
This mixture is a little bit on the high side for oil content about a 25:1 ratio.
That is why the optimal glow fuel would be the 10% nitro and 10% oil content, because when you mix this fuel at a 1 part glow fuel with 2 parts gasoline the nitro content will still be 3.33% and the oil would drop to 3.33% also meaning a 30:1 oil ratio which is not bad at all for our weedwacker engines.
The way you can obtain a 10/10 glow fuel is by purchasing the powermaster YS 20/20 glow fuel mix, then you can mix this fuel in equal amounts with methanol (1 part 20/20 glow fuel and 1 part methanol), this would give you a 10/10 glow fuel; now you can mix this diluted glow fuel with 2 parts of 91 octane gasoline to make your gas/glow fuel at the desired 3.33% nitro, 3.33% oil, 26.67 methanol and 66.66 gasoline.
Hope this clarifies or helps anybody with the brewing issue.
So let keep flying those GAS/GLOW engines they are a lot of inexpensive fun
2 parts of 15% glow fuel and 1 part Methanol = a 10% glow fuel
with 12% oil.
Now you take a 1 part of this mixture and mix it with 2 parts of 91
octane gasoline and you'll end up witha fuel that contains:
3.33% nitro
4.0% oil
26.0% Methanol
66.66% Gasoline
This mixture is a little bit on the high side for oil content about a 25:1 ratio.
That is why the optimal glow fuel would be the 10% nitro and 10% oil content, because when you mix this fuel at a 1 part glow fuel with 2 parts gasoline the nitro content will still be 3.33% and the oil would drop to 3.33% also meaning a 30:1 oil ratio which is not bad at all for our weedwacker engines.
The way you can obtain a 10/10 glow fuel is by purchasing the powermaster YS 20/20 glow fuel mix, then you can mix this fuel in equal amounts with methanol (1 part 20/20 glow fuel and 1 part methanol), this would give you a 10/10 glow fuel; now you can mix this diluted glow fuel with 2 parts of 91 octane gasoline to make your gas/glow fuel at the desired 3.33% nitro, 3.33% oil, 26.67 methanol and 66.66 gasoline.
Hope this clarifies or helps anybody with the brewing issue.
So let keep flying those GAS/GLOW engines they are a lot of inexpensive fun
05-25-2006 | 02:34 AM
#677
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From: Woodland,
CA
RE: gas fuel with glo plug no ignition
Thanks Aero Nut
With all of that said, Can you use alcohol purchased as thinner, I believe, at a hardware store?
If so what is it called?
For me it's a 45 minute drive each way to buy methanol.
With all of that said, Can you use alcohol purchased as thinner, I believe, at a hardware store?
If so what is it called?
For me it's a 45 minute drive each way to buy methanol.
05-25-2006 | 03:09 AM
#678
Senior Member
RE: gas fuel with glo plug no ignition
aero nut
I agree on the 15 / 18 mix end product being high on oil content. 15/15 mixes are available.
Powermaster 4 Stroke 15 / 15% oil blend is a good option also. Mixed: 1 part Meth; 2 parts Glow (15-15); with 6 parts gas gives the same final percentage mix. 30:1 gas/oil ratio
Powermaster YS 20/20 Mixed as you stated: Mixed: 1 part Meth; 1 part Glow (20-20); with 4 parts gas gives the same final percentage mix. 30:1 gas/oil ratio
Powermaster Premium Sport 20 nitro/ 18% oil blend is another attractive option. Mixed: 1 part Meth; 1 part Glow (20-18); with 4 parts gas gives same gas/meth/nitro percentages with 3% oil. a 33.4:1 gas/oil ratio. How clean burning is your mix with 30:1 oil?
I agree on the 15 / 18 mix end product being high on oil content. 15/15 mixes are available.
Powermaster 4 Stroke 15 / 15% oil blend is a good option also. Mixed: 1 part Meth; 2 parts Glow (15-15); with 6 parts gas gives the same final percentage mix. 30:1 gas/oil ratio
Powermaster YS 20/20 Mixed as you stated: Mixed: 1 part Meth; 1 part Glow (20-20); with 4 parts gas gives the same final percentage mix. 30:1 gas/oil ratio
Powermaster Premium Sport 20 nitro/ 18% oil blend is another attractive option. Mixed: 1 part Meth; 1 part Glow (20-18); with 4 parts gas gives same gas/meth/nitro percentages with 3% oil. a 33.4:1 gas/oil ratio. How clean burning is your mix with 30:1 oil?
05-26-2006 | 12:10 AM
#679
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From: tijuanaBaja California, MEXICO
RE: gas fuel with glo plug no ignition
The thinner type alcohol is called Denatured Alcohol but it's mainly pure ethanol with a small percentage of methanol to keep people from drinking it!!!
05-26-2006 | 12:28 AM
#680
My Feedback: (6)
RE: gas fuel with glo plug no ignition
Methyl alcohol, or Methanol, is necessary for the catalytic reaction with the glow plug. Ethanol won't work. Been there done that. It won't even work well with full time glow heat.
Guys, its just not that tough to buy the right glow fuel to mix i.e. 10% oil and 10% nitro. It's made for the large Super Tiger engines and available from all the large fuel suppliers. If your hobby shop doesn't have it, ask them to order it in for you. Or bite the bullet and pay the silly "Hazardous Materials" surcharge and mail order it.
AV8TOR
Guys, its just not that tough to buy the right glow fuel to mix i.e. 10% oil and 10% nitro. It's made for the large Super Tiger engines and available from all the large fuel suppliers. If your hobby shop doesn't have it, ask them to order it in for you. Or bite the bullet and pay the silly "Hazardous Materials" surcharge and mail order it.
AV8TOR
05-26-2006 | 10:05 PM
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From: magnolia, TX
RE: gas fuel with glo plug no ignition
I ordered the glow plug adapter to day and I am going to do a 33 homelite chainsaw as a test engine, I have other conversions (ryobi) but I like the idea of leaving off the flywheel and coil, I don't want to beat this to death but after reading this thread I want to be shure about the fuel mix If i understand correctly 1gal of glow fuel (say powermaster 10% nitro, 10% oil ) mixed with 2 gals high octane gasoline will yield 3gals of correct fuel blend , is this correct ?
Thanks a lot cal.45acp
Thanks a lot cal.45acp
05-26-2006 | 10:25 PM
#683
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From: Woodland,
CA
RE: gas fuel with glo plug no ignition
ORIGINAL: cal.45acp
If i understand correctly 1gal of glow fuel (say powermaster 10% nitro, 10% oil ) mixed with 2 gals high octane gasoline will yield 3gals of correct fuel blend , is this correct ?
If i understand correctly 1gal of glow fuel (say powermaster 10% nitro, 10% oil ) mixed with 2 gals high octane gasoline will yield 3gals of correct fuel blend , is this correct ?
It's that easy. Although you can play with the nitro to get a custom mix for your engine.
05-27-2006 | 02:02 AM
#684
My Feedback: (6)
RE: gas fuel with glo plug no ignition
Yep, that's what has been working for us and I recommend you use it. Be prepared to adjust the carb richer for this mixture, and if it won't go rich enough, raise the lever in the carb for the regulator diaphragm a touch.
Good luck, and let us know how it works for you,
AV8TOR
Good luck, and let us know how it works for you,
AV8TOR
05-29-2006 | 09:09 AM
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From: Jackson, MS
RE: gas fuel with glo plug no ignition
ORIGINAL: aero nut
To use a 15% glow fuel that usually contains an 18% content of oil you will need to reduce it first with methanol in the following manner:
2 parts of 15% glow fuel and 1 part Methanol = a 10% glow fuel
with 12% oil.
Now you take a 1 part of this mixture and mix it with 2 parts of 91
octane gasoline and you'll end up witha fuel that contains:
3.33% nitro
4.0% oil
26.0% Methanol
66.66% Gasoline
This mixture is a little bit on the high side for oil content about a 25:1 ratio.
That is why the optimal glow fuel would be the 10% nitro and 10% oil content, because when you mix this fuel at a 1 part glow fuel with 2 parts gasoline the nitro content will still be 3.33% and the oil would drop to 3.33% also meaning a 30:1 oil ratio which is not bad at all for our weedwacker engines.
The way you can obtain a 10/10 glow fuel is by purchasing the powermaster YS 20/20 glow fuel mix, then you can mix this fuel in equal amounts with methanol (1 part 20/20 glow fuel and 1 part methanol), this would give you a 10/10 glow fuel; now you can mix this diluted glow fuel with 2 parts of 91 octane gasoline to make your gas/glow fuel at the desired 3.33% nitro, 3.33% oil, 26.67 methanol and 66.66 gasoline.
Hope this clarifies or helps anybody with the brewing issue.
So let keep flying those GAS/GLOW engines they are a lot of inexpensive fun
To use a 15% glow fuel that usually contains an 18% content of oil you will need to reduce it first with methanol in the following manner:
2 parts of 15% glow fuel and 1 part Methanol = a 10% glow fuel
with 12% oil.
Now you take a 1 part of this mixture and mix it with 2 parts of 91
octane gasoline and you'll end up witha fuel that contains:
3.33% nitro
4.0% oil
26.0% Methanol
66.66% Gasoline
This mixture is a little bit on the high side for oil content about a 25:1 ratio.
That is why the optimal glow fuel would be the 10% nitro and 10% oil content, because when you mix this fuel at a 1 part glow fuel with 2 parts gasoline the nitro content will still be 3.33% and the oil would drop to 3.33% also meaning a 30:1 oil ratio which is not bad at all for our weedwacker engines.
The way you can obtain a 10/10 glow fuel is by purchasing the powermaster YS 20/20 glow fuel mix, then you can mix this fuel in equal amounts with methanol (1 part 20/20 glow fuel and 1 part methanol), this would give you a 10/10 glow fuel; now you can mix this diluted glow fuel with 2 parts of 91 octane gasoline to make your gas/glow fuel at the desired 3.33% nitro, 3.33% oil, 26.67 methanol and 66.66 gasoline.
Hope this clarifies or helps anybody with the brewing issue.
So let keep flying those GAS/GLOW engines they are a lot of inexpensive fun
Thanks for the explanation,Buddy! Good info
06-04-2006 | 09:54 AM
#686
RE: gas fuel with glo plug no ignition
Aeronut: I have Klotz oil. I think I can get strait alky. What ratios do I mix for a 25cc Homelite converted to gas/glow. Thanks Capt,n OOPS I forgot the Nitro...what now?[:-]
06-04-2006 | 06:37 PM
#687
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From: Rockford, IL
RE: gas fuel with glo plug no ignition
I was wondering if the gas/glow conversions are ok to mount inverted? Or is that going to present some glow plug fouling issues?
06-05-2006 | 05:41 AM
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From: tijuanaBaja California, MEXICO
RE: gas fuel with glo plug no ignition
I run all of my GAS/GLOW Hybrid engines inverted and never had any plug fouling problems!!!!
make sure you use either the O.S. 4F or the Hobby Peoples 4 Stroke Big Bore Engine Thunderbolt plugs.
make sure you use either the O.S. 4F or the Hobby Peoples 4 Stroke Big Bore Engine Thunderbolt plugs.
06-05-2006 | 06:53 PM
#689
RE: gas fuel with glo plug no ignition
aero nut....does Hobby People have glow plug adapters to? I would like to get my parts at one place to save shipping. Thanks Capt,n
06-05-2006 | 07:07 PM
#690
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From: Woodland,
CA
RE: gas fuel with glo plug no ignition
It's a Zenoha number. ZEN23445
It's listed as Zenoha Gas-Glow plug adapter.
It says on the back of the package www.horizonhobby.com
Cost is $11.99. I ordered mine through the local hobby shop.
It's listed as Zenoha Gas-Glow plug adapter.
It says on the back of the package www.horizonhobby.com
Cost is $11.99. I ordered mine through the local hobby shop.
06-05-2006 | 10:00 PM
#691
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From: magnolia, TX
RE: gas fuel with glo plug no ignition
Question : with flywheel ignition, prop hub is threaded and machined square to butt up to flywheel,with crankshaft taper enclosed by the flywheel----- with gas\glow conversion the flywheel is removed (to save weight) . What is the best way to machine the prop hub for gas/glow engine ??
1. machine hub to fit the straight portion of the crankshaft with last 3/4 inch threaded to fit threaded portion of crankshaft
2. machine hub to fit straight and tapered parts of crank; if so I will have to invest in additional tooling for my lathe
3. all of these questions are about the engine side of prop adapter , I know how to do the prop side
Thanks in advance for your help cal.45acp
1. machine hub to fit the straight portion of the crankshaft with last 3/4 inch threaded to fit threaded portion of crankshaft
2. machine hub to fit straight and tapered parts of crank; if so I will have to invest in additional tooling for my lathe
3. all of these questions are about the engine side of prop adapter , I know how to do the prop side
Thanks in advance for your help cal.45acp
06-05-2006 | 10:57 PM
#692
RE: gas fuel with glo plug no ignition
You can retain just the center of the flywheel and have a simple round stock adapter that screws on shaft and butts up to the center that was the flywheel. Ruff cut the flywheel with a bandsaw and then place it on a sawed off crankshaft and machine center to what you want. Notice, the small round part WAS the FLYWHEEL!!! Good Luck Capt,n
06-06-2006 | 02:20 PM
#693
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From: magnolia, TX
RE: gas fuel with glo plug no ignition
Captian john, that would work, but the engine I am converting is a homelite 33 out of a chainsaw and the crankshaft is only 1&1/2 inches long (very short compared to yours) with only the last 1/2 inch being threaded, thats why I am leaning towards a one piece propshaft with a taper to match the crank as that would give additional support; anyone have any other ideas ?
06-06-2006 | 10:18 PM
#694
RE: gas fuel with glo plug no ignition
It seems like a tapered reamer with the same taper would be the way to go. Just make a threaded coupler and then cut the taper in it, to fit on crankshaft. My question....is there such a tapered reamer on the market? Are you sure that the flywheel you have now cut down so the center portion is still there with taper, will not work good. All you need is 1/2 of threads and some loctite. Thanks Capt,n
06-07-2006 | 12:10 AM
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From: Elk Grove, CA
RE: gas fuel with glo plug no ignition
ORIGINAL: cal.45acp
2. machine hub to fit straight and tapered parts of crank; if so I will have to invest in additional tooling for my lathe
2. machine hub to fit straight and tapered parts of crank; if so I will have to invest in additional tooling for my lathe
Before you turn the final piece, you may try that on some samples to see how your calculated taper fits the shaft. It is really no brainer.
06-07-2006 | 12:56 AM
#696
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RE: gas fuel with glo plug no ignition
06-07-2006 | 11:59 AM
#697
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RE: gas fuel with glo plug no ignition
cal.45acp, I think I have your answer. At least if the taper on your crank is the same as a Ryobi. If so, what you want is a prop adapter from CH Ignitions for a short shaft Ryobi. It has a unique tubular through stud that goes through the prop adapter. The aluminum prop adapter itself floats on this stud, and is held against the the crankshaft taper by the propellor and propellor nut. It's a slick system for a very short shaft engine.
See pics.
I would like to add however, that I have used the same method as Capn John on many engines and it works fine. Just use a hole saw to cut out the center of the magneto, chuck it up and dress it round, and use it behind a prop adaptor designed for engines with magnetos.
Good luck,
AV8TOR
See pics.
I would like to add however, that I have used the same method as Capn John on many engines and it works fine. Just use a hole saw to cut out the center of the magneto, chuck it up and dress it round, and use it behind a prop adaptor designed for engines with magnetos.
Good luck,
AV8TOR
06-07-2006 | 10:09 PM
#698
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From: magnolia, TX
RE: gas fuel with glo plug no ignition
I think I like the CH type prop adapter, steel to steel threads less chance of stripping out, I have a couple of ryobis that I am using weed whacker prop adapters on ( all aluminium) and they work just fine , but one has to be careful to not over tighten hub for fear of stripping aluminim threads
P.S. I have an idea for anyone wanting to cut a taper at the botton of a 1/2 inch wide x 1 inch deep hole ( as in a home made prop hub)
1. get a 1/2 inch drill bit and grind it to a 28 degree cutting edge, chuck it in the tailstock cut taper in already drilled hole; 28 degrees is used on a lot of our conversion crankshafts. I havent tried it yet but I think it will work
P.S. I have an idea for anyone wanting to cut a taper at the botton of a 1/2 inch wide x 1 inch deep hole ( as in a home made prop hub)
1. get a 1/2 inch drill bit and grind it to a 28 degree cutting edge, chuck it in the tailstock cut taper in already drilled hole; 28 degrees is used on a lot of our conversion crankshafts. I havent tried it yet but I think it will work
06-08-2006 | 12:59 AM
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From: Elk Grove, CA
RE: gas fuel with glo plug no ignition
ORIGINAL: cal.45acp
I think I like the CH type prop adapter, steel to steel threads less chance of stripping out, I have a couple of ryobis that I am using weed whacker prop adapters on ( all aluminium) and they work just fine , but one has to be careful to not over tighten hub for fear of stripping aluminim threads
I think I like the CH type prop adapter, steel to steel threads less chance of stripping out, I have a couple of ryobis that I am using weed whacker prop adapters on ( all aluminium) and they work just fine , but one has to be careful to not over tighten hub for fear of stripping aluminim threads
The hubs I made have steel machine screw that is mounted permamently on to the hub. Then I use steel nut for tightening the prop. Steel to steel, and I don't have a problem with thread. The obly drawback is that the hole in the prop must be 12mm
Here is my prop adapter (without taper, as this one was mounted to the flywheel)
06-08-2006 | 08:54 AM
#700
RE: gas fuel with glo plug no ignition
RysiuM: Very nice work. Also a nice set of photos to show the details. A picture is worth a thousand words they say!! Best Regards Capt,n
Best Regards Capt,n
