G38 On Coleman Fuel
#1
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G38 On Coleman Fuel
Here is a G38 running on Coleman Camp Fuel with a 32 to 1 oil mix using Amsoil Saber Professional. Engine is throwing an 18X8 prop. Moving the throttle around a bit to see if it hesitates or wants to stall, seems nice with very good response. Think I will pat it on the bum and call it done. I am tuning this for a friend who cannot stand the smell of gasoline. He's willing to spend the camp fuel prices who am I to question it.
Dennis
https://www.youtube.com/watch?v=Eq5bp9HnK3w
Dennis
https://www.youtube.com/watch?v=Eq5bp9HnK3w
#2
Join Date: Jan 2004
Location: lake in the Hills,
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Well as long as you use the word "friend". You should tell him Coleman fuel has an octane of 50-60, it burns hot, depending on the application you could get pre-ignition and it will destroy the engine in no time at all if you run at a high load.
But, it does not smell.
.02 from me.
But, it does not smell.
.02 from me.
#3
My Feedback: (16)
I've seen model engines (Brison twins) run & fly on Coleman many times. I couldn't hear, see, feel, or smell anything wrong with their operation. If they run "hot" I sure couldn't feel it?
The octane is closer to 70 but still way below regular pump gasoline.
I just use regular pump gasoline for Coleman is about 5 times more expensive.
Coleman seems to stay stable over the long term even when mixed with oil.
The octane is closer to 70 but still way below regular pump gasoline.
I just use regular pump gasoline for Coleman is about 5 times more expensive.
Coleman seems to stay stable over the long term even when mixed with oil.
Last edited by w8ye; 08-01-2015 at 01:17 PM.
#4
Thread Starter
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I've seen model engines (Brison twins) run & fly on Coleman many times. I couldn't hear, see, feel, or smell anything wrong with their operation. If they run "hot" I sure couldn't feel it?
The octane is closer to 70 but still way below regular pump gasoline.
I just use regular pump gasoline for Coleman is about 5 times more expensive.
Coleman seems to stay stable over the long term even when mixed with oil.
The octane is closer to 70 but still way below regular pump gasoline.
I just use regular pump gasoline for Coleman is about 5 times more expensive.
Coleman seems to stay stable over the long term even when mixed with oil.
Dennis
#5
Well as long as you use the word "friend". You should tell him Coleman fuel has an octane of 50-60, it burns hot, depending on the application you could get pre-ignition and it will destroy the engine in no time at all if you run at a high load.
But, it does not smell.
.02 from me.
But, it does not smell.
.02 from me.
I use Colemans and Klotz in my Zenoah G23 with ECDI. Never any of the problems you have mentioned. Many boatracers and heli flyers also use Colemans with no problems at all. Have you had personal experience with the problems you say could happen, or are you just saying what many naysayers do?.
But, what you also say that I do agree with, is: "it does not smell" bad like pump gas! And, like W8YE says: it "seems to stay stable over the long term even when mixed with oil."
Sincerely, Richard
#6
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Coleman Fuel = Naptha
Gasoline= Toluene 0-30~%, Hexane 5-25~%, Xylene 0-25~%, Octane (Isomers) 0-18.5~%, Ethanol 0-10~%
Most of the info I have read supports the basic differences I pointed out.
You may do as you wish.
I am not an S.A.E. certified engineer, but, I play one on TV.
The true answer lies in data I do not have and never will.
10s electric and a 90 amp ESC will out perform a G38 and there is no smell either!
Gasoline= Toluene 0-30~%, Hexane 5-25~%, Xylene 0-25~%, Octane (Isomers) 0-18.5~%, Ethanol 0-10~%
Most of the info I have read supports the basic differences I pointed out.
You may do as you wish.
I am not an S.A.E. certified engineer, but, I play one on TV.
The true answer lies in data I do not have and never will.
10s electric and a 90 amp ESC will out perform a G38 and there is no smell either!
#7
So you are an actor with a pretense for reality? That explains a lot. I won't even ask your premise for the statement about the G38 vs electric.
#8
Thread Starter
My Feedback: (3)
2 many people for 2 many years have been running 2 many engines without a hint of problem on the camp fuel to give much credence 2 KMirrors poor reviews of a fuel he has never put to the test himself.
Maynard Hill built a model that flew across the Atlantic on a converted OS engine on a gallon of Coleman fuel over 38 hours and over 3000kms non stop without a problem.
https://en.wikipedia.org/wiki/The_Sp..._Butts%27_Farm
https://www.youtube.com/watch?v=6KEIq76JE7o
Maynard Hill built a model that flew across the Atlantic on a converted OS engine on a gallon of Coleman fuel over 38 hours and over 3000kms non stop without a problem.
https://en.wikipedia.org/wiki/The_Sp..._Butts%27_Farm
https://www.youtube.com/watch?v=6KEIq76JE7o
Last edited by Propworn; 08-02-2015 at 04:27 PM.
#9
My Feedback: (2)
Geez, with a running engine in front of you, isn't that enough proof? Nobody trying to tear your arm out by the roots. If you don't like the concept, don't use it. Why the need to say it won't work?
Too many people doing that today. If you don't think it will work, give the guy that says it does room to prove it. That way we all learn/come out ahead.
Too many people doing that today. If you don't think it will work, give the guy that says it does room to prove it. That way we all learn/come out ahead.
#10
I too am using Coleman fuel in the appropriate device shown below and it works just fine, as some have described. I can also confirm that it runs hot, just as others have said. *running for my life*
#12
#13
My Feedback: (6)
The owner/originator of CH Ignitions did do tests and verified that the Coleman fuel runs hotter. That correlates with my experience as well. Do it at your own risk. Most modern model engine manufacturers spec 89 octane fuel, or at least 87. The 50 to 70 octane (depending on your source of info), of Coleman fuel isn't even close....
AV8TOR
Last edited by av8tor1977; 08-03-2015 at 08:44 PM.
#14
A flying buddy of mine had been running coleman fuel in his heli's and planes for years and for years he had fought overheating engines ,broken cranks and pistons on Zenoah and DLE engines . I finally persuaded him to use pump gas and then avgas . After switching from coleman fuel he has had no more overheating nor any broken engines. It isnt imperical proof that coleman fuel was the cause but he doesnt have the problems he had prior to switching..
#15
HA HA!! Too cool! Great post! And it reflects my personal sentiments about using Coleman fuel to fly with as well. I won't even get started on the Amsoil part.....
The owner/originator of CH Ignitions did do tests and verified that the Coleman fuel runs hotter. That correlates with my experience as well. Do it at your own risk. Most modern model engine manufacturers spec 89 octane fuel, or at least 87. The 50 to 70 octane (depending on your source of info), of Coleman fuel isn't even close....
AV8TOR
The owner/originator of CH Ignitions did do tests and verified that the Coleman fuel runs hotter. That correlates with my experience as well. Do it at your own risk. Most modern model engine manufacturers spec 89 octane fuel, or at least 87. The 50 to 70 octane (depending on your source of info), of Coleman fuel isn't even close....
AV8TOR
Some pump gas users recommend using Coleman's or Avgas for the final run of their engines, but not for flying. A purge of pump gas with Coleman's (and oil of course) removes the crap gas from the carb and engine internals. and leaves stable fuel in the tank, if you choose to do that.
JMHO,
Sincerely, Richard
#16
My Feedback: (6)
I agree that Coleman fuel may not be for everyone. If I could get non-ethanol contaminated gasoline or AvGas, I might not use Coleman's, if only because of it's cost, around $12.00/gallon at Wally World. And AvGas has lead in it. But I cannot stand the smell of pump gasoline as I can get it. It never used to smell that bad, and I used to use it for everything, including to wash my hands and paintbrushes (maybe all the lead has had an effect). I was out on a boat last week and the gasoline smell from the 2S exhaust kept me from going back out again, and I love boating. TEHO (to each his own).
Some pump gas users recommend using Coleman's or Avgas for the final run of their engines, but not for flying. A purge of pump gas with Coleman's (and oil of course) removes the crap gas from the carb and engine internals. and leaves stable fuel in the tank, if you choose to do that.
JMHO,
Sincerely, Richard
Some pump gas users recommend using Coleman's or Avgas for the final run of their engines, but not for flying. A purge of pump gas with Coleman's (and oil of course) removes the crap gas from the carb and engine internals. and leaves stable fuel in the tank, if you choose to do that.
JMHO,
Sincerely, Richard
The Avgas will work, you just need to check the spark plug more often for lead fouling. It has almost no smell, and is very stable. It will last a long time left in the tank and fuel system without going bad and/or doing damage. Many small airports will fill up a 5 gallon can for you. Maybe take some pics of your plane to show them what you want to use it for.... It runs somewhere around 5 bucks a gallon. Too bad they did away with the 80/87 Avgas years ago, as that would have been even better. Anyway, I often buy 100 octane Avgas for my race boat and usually have no problems getting it at a small airport. They usually let me pull the boat right into the fueling area, and they fill up its tank and the extra 5 gallon tanks too.
I do agree with how bad auto gas smells these days. I also used it for a lot of things you shouldn't, like cleaning parts and stuff. Now, it doesn't even work well for that. It will hardly melt grease and oil!!
AV8TOR
#17
Senior Member
I have run several engines on Colman fuel (Quadra, G38, G23 and others) with no problems. On engines this size, octane rateings have no meaning, i.e. little or no difference in performance with different octane ratings. Clarence Lee (a well known engine expert) has often commented on the fact that Colman fuel works well and that octane levels have little effect on these small 2 cycle engines.
#19
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We have been using AVGAS which we buy at the airport ever since finding ethanol free gas at the pump became an issue. It has virtually no fuel odor which was a nice bonus for us but may be what you need to avoid the fumes.....
In the 5 years we have been using it exclusively, which includes every type of engine from a 10cc gas engine to a 400cc moki radial and everything in between, we have had no problems whatsoever
In the 5 years we have been using it exclusively, which includes every type of engine from a 10cc gas engine to a 400cc moki radial and everything in between, we have had no problems whatsoever
Last edited by Frank Ts Stuff; 08-04-2015 at 02:46 PM.
#20
My Feedback: (6)
+1 on avgas been using it sense I got my first gas engine 30 years back, an added advantage is it stores well with out any fuel stabilizer, but a good one can also prevent it from collecting moisture. You can leave it in your fuel system, and it does not gum up, But I don't recommend leaving any in the tank.
Cheers
Cheers