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Author Topic: 4 Stroke ignition - gasoline fuel  (Read 6502 times)

Offline Dennis Toth

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4 Stroke ignition - gasoline fuel
« on: October 25, 2013, 10:19:12 AM »
Guys,
I just got a look at the latest Model Aviation and saw a ad for both and OS 40 and Satio 40 4 stroke ignition engines. Has anyone tried running one of these? The systems seem to be a magnetic pickup so oil would not interfere with the spark triggers. It seemed that being able to use reliable ignition for stunt could give us better tuning for max torque when we need it. The use of gasoline (or Coleman fuel) would be about half the amount of regular fuel so any weight for the ignition system could be offset with less fuel weight. Could be interesting.

Best,         DennisT
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Offline proparc

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Re: 4 Stroke ignition - gasoline fuel
« Reply #1 on: October 25, 2013, 10:29:49 AM »
$3.00 a gallon as opposed to $15.00 a gallon for fuel sounds REAL GOOD to me!!
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Offline Douglas Ames

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Re: 4 Stroke ignition - gasoline fuel
« Reply #2 on: October 27, 2013, 04:59:36 PM »
I work with a guy who's very active in R/C. The glow engines are going away - FAST. They are being replaced by Electric and Gas/Ign engines. There's no comparison to the relic ignition engines of your youth and the ignition boxes really don't weigh as much as they look. Keep in mind your tank will about half the capacity. Operational cost is almost a crime - In Tulsa? $2.79/ gal + 2 stroke oil.
You'll see ignition kits on eBay for conversions but the problem is getting enough lube to your rod journal on a traditional glow engine. The dedicated factory gas engines have this taken into account. Gas runs hotter (higher EGT) BTW! Carbon pipes??? (unknown)

FOX is selling a .50 gas engine also, would be neat to try it.
« Last Edit: October 27, 2013, 05:17:53 PM by Douglas Ames »
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Offline Douglas Ames

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Re: 4 Stroke ignition - gasoline fuel
« Reply #3 on: October 27, 2013, 05:27:23 PM »
Quote from: Dennis Toth on October 25, 2013, 10:19:12 AM
Guys,
I just got a look at the latest Model Aviation and saw a ad for both and OS 40 and Satio 40 4 stroke ignition engines. Has anyone tried running one of these? The systems seem to be a magnetic pickup so oil would not interfere with the spark triggers. It seemed that being able to use reliable ignition for stunt could give us better tuning for max torque when we need it. The use of gasoline (or Coleman fuel) would be about half the amount of regular fuel so any weight for the ignition system could be offset with less fuel weight. Could be interesting.

Best,         DennisT

They look like they are 40cc not .40 CID. But...Evolution, Fox and others make 9-15cc Gas engines.
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Offline proparc

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Re: 4 Stroke ignition - gasoline fuel
« Reply #4 on: October 27, 2013, 06:36:40 PM »
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Offline Chris Wilson

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Re: 4 Stroke ignition - gasoline fuel
« Reply #5 on: October 27, 2013, 07:57:58 PM »
I know it ain't fourstroke but ...........
http://www.nvengines.com/
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Offline Douglas Ames

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Re: 4 Stroke ignition - gasoline fuel
« Reply #6 on: October 27, 2013, 08:54:44 PM »
Quote from: Chris Wilson on October 27, 2013, 07:57:58 PM
I know it ain't fourstroke but ...........
http://www.nvengines.com/

I wonder if they are using higher compression to accomplish ignition?
Never heard of running a glow plug with Gasoline.
That silicone tubing is worrisome.
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Offline Martin Quartim

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Re: 4 Stroke ignition - gasoline fuel
« Reply #7 on: October 30, 2013, 07:25:32 PM »
Quote from: Douglas Ames on October 27, 2013, 08:54:44 PM
I wonder if they are using higher compression to accomplish ignition?
Never heard of running a glow plug with Gasoline.
That silicone tubing is worrisome.

Enya was the first to introduce a Glow Gas Engine (as far as know)

http://www.enya-engine.com/180XGS_E.html

Martin

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Offline Avaiojet

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Re: 4 Stroke ignition - gasoline fuel
« Reply #8 on: November 12, 2013, 09:26:32 AM »
Just because it's ignition doesn't mean you can run gasoline only.

With the smaller engines, in most cases you cannot.

Charles
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Online Dan McEntee

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Re: 4 Stroke ignition - gasoline fuel
« Reply #9 on: November 12, 2013, 03:41:22 PM »
Quote from: Avaiojet on November 12, 2013, 09:26:32 AM
Just because it's ignition doesn't mean you can run gasoline only.

With the smaller engines, in most cases you cannot.

Charles

   Why can't you run gas/oil in a small two stroke engine on ignition? Explain please?
    Dan  McEntee
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Offline Avaiojet

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Re: 4 Stroke ignition - gasoline fuel
« Reply #10 on: November 12, 2013, 05:48:24 PM »
Quote from: Dan McEntee on November 12, 2013, 03:41:22 PM
   Why can't you run gas/oil in a small two stroke engine on ignition? Explain please?
    Dan  McEntee

Dan,

Sorry, I wasn't clear.

You CAN run gas, with a 20-1 mix, but the engine runs much hotter with that mix, which is not a good thing.

For the best run using the CH Ignition, using nitro will allow for a cooler run with more consistancy in the run time.

I think I got it right.   n~

Charles
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Online Dan McEntee

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Re: 4 Stroke ignition - gasoline fuel
« Reply #11 on: November 12, 2013, 07:14:28 PM »
  Well the Arden and Atom .09s ran just fine on gas and oil. I have a synthetic oil I used in my vintage race bikes that I run at close to 100 to 1 and it would probably work fine in smaller engines like that. It's a concentrate, so that allows the higher ratios. Plane old 70wt. motorcycle oil and straight gas or white gas @ 3 to 1 will work just fine also like it always did back in the day. The biggest problem is downsizing the components required so everything fits. Don Hutchinson converted a Magnum .40, I think it was, for ignition and it ran so well, they outlawed it in OTS competition. You just have to know what you want, then know how to go about it during the process. Glow fuel is expensive now, but will moderate some as it always has after each crisis and new fangled fad comes and goes. I'll just stick with what I have and know best and always works.
   Type at you later,
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Offline Jim Kraft

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Re: 4 Stroke ignition - gasoline fuel
« Reply #12 on: November 27, 2013, 06:52:44 PM »
According to Horizons web site instructions for their 60 2 stroke ignition engine, it says to use 2 stroke oil and 87 to 89 octane gas at a 20 to 1 mix. For some reason they say not to use any form of Amsoil ever.
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