RE: gas fuel with glo plug no ignition  
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RE: gas fuel with glo plug... - 9/25/2008 4:41:24 AM   
captinjohn


 

Posts: 6287
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline 		AVATOR, A Carb of the right size and the lever raised .020 would help. I may not have the right carb. I did raise the lever on this carb...but kinda just guessed at it. I mentioned set-up not fine tunned . I know I would have to adjust the needles/fine tuning. I just need the right carb and maybe the lever for inlet raised the way you do. Sorry I said something wrong. OH...Ralphbf....it is a lot less expensive to send a small carb one way than sending a complete engine 2 ways...but you are the one that gave ne the idea. I will turn a little and you can slap me. That the way it is with fellow engine brothers! Capt,n

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RE: gas fuel with glo plug... - 9/25/2008 5:12:46 AM   
Ralphbf



Posts: 1249
Joined: 3/15/2004
From: Woodland, CA, USA
Status: offline 		It might be cheaper but it is a lot less work.

Av8tor would do a great job of super tuning and would not give up until it was near perfect.

I believe it could easily be turned into a pride issue. Heck a few well chosen words and he might even pay the shipping too. Ya right.

Anyway I know this stuff works and works well. I have good support around here when I get stuck.

Plus you have been a hard case to win over to Gas-Glow.

I'm looking forward to seeing what Av8tor has to say.......

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Ralph

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RE: gas fuel with glo plug... - 9/25/2008 1:18:37 PM   
KI8FR


 

Posts: 882
Joined: 2/18/2004
From: Ovid, MI, USA
Status: offline 		Right now I am working on a twin. I have 2 homie 25 that are on gas/glow. I just made them. Working on getting the rings broke in. One of the engines are running just fine. the other is being such a big pain in the but that i just mite make a difrant one. I ran them both on spark to get them some what broke in but when I put them on gas/glow the one runs great. I have no idea why the other one runs like crap. I am just about to give up on it and make a new engine all to gether.

I only had one engine before that I was having truble with. I put a difrant carb and intake on it and it worked out fine. Put the carb that did not work on a spark engine and it worked out fine.

I have no idea. why we run in to this but we do. With gas/glow you have to play with your engeings from time to time but with what engine do you not have too.

I know I like gas/glow. and i have 4 people at my club doing it now.

Paul

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RE: gas fuel with glo plug... - 9/25/2008 1:44:40 PM   
captinjohn


 

Posts: 6287
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline 		KI8FR, I noticed you live near Ovid, Mich. We may go your way this fall. Maybe I can see how the Gas/glow works in the air. Where is your field located? Thanks for the encouragement. I am not a hard case to try something new...I just have not had any real good running with Gas/glow yet. I do like the soft slow idle the engine has...that is when it will. My paticular engine MB290 needs the right carb. I felt like giving up...but as I think about it...I never give up in most cases. Is this the area you live in? http://www.mapquest.com/maps?city=Ovid&state=MI Thanks Capt,n

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RE: gas fuel with glo plug... - 9/25/2008 4:30:35 PM   
KI8FR


 

Posts: 882
Joined: 2/18/2004
From: Ovid, MI, USA
Status: offline
quote:

ORIGINAL: captinjohn

KI8FR, I noticed you live near Ovid, Mich. We may go your way this fall. Maybe I can see how the Gas/glow works in the air. Where is your field located? Thanks for the encouragement. I am not a hard case to try something new...I just have not had any real good running with Gas/glow yet. I do like the soft slow idle the engine has...that is when it will. My paticular engine MB290 needs the right carb. I felt like giving up...but as I think about it...I never give up in most cases. Is this the area you live in? http://www.mapquest.com/maps?city=Ovid&state=MI Thanks Capt,n


Yes it is. I live just out side of town on a farm. I have my own air strip here. but my club is about 20 mis east of here.

It would be nice to meet you..

Paul

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RE: gas fuel with glo plu... - 9/25/2008 6:14:28 PM   
aero nut


 

Posts: 469
Joined: 11/10/2003
From: tijuanaBaja California, MEXICO
Status: offline 		OWN AIRSTRIP!!!!!! blowmedown popeye would say, that is my dream!!!! be able to wake up, eat breakfast and the go give a couple of flights before going to work!!!! BLOWMEDOWNNNNN!!!!!

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RE: gas fuel with glo plug... - 9/25/2008 6:16:42 PM   
clocknut


 

Posts: 96
Joined: 2/2/2008
From: Macedonia , IA, USA
Status: offline 		Av8tor you talked about running the gas/glow dry and then run after run oil in it? dumb question but why? My 40 cc poulan is running pretty darn good, starts great ,idles great ,and hardly no clean up, here in Omaha Nebraska area on gas /glow and I would like to keep it that way. so inquiring minds what to know.
Thanks

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RE: gas fuel with glo plu... - 9/25/2008 6:58:05 PM   
av8tor1977



Posts: 2778
Joined: 5/3/2003
From: ASH FORK, AZ, USA
Status: offline 		We run glow engines dry and use an after run oil because of several reasons. One, the methanol in glow fuel attracts moisture. Two, the nitro in the glow fuel can combine with combustion by products and water to create nitric acid. So if there is glow fuel left in an engine, there is a very high possibility of corrosion occurring. I have glow engines that are 25 years old that have never been rebuilt and run great, but I always run the engine dry of fuel after flying, and then use automatic transmission fluid as an after run oil.

Running our gasoline engines on the Gas/Glow system introduces methanol and nitro into the engine just as in glow engine use. So it stands to reason that it is a good idea to treat them like glow engines and run them dry of fuel and use after run oil after flying to avoid any possible corrosion problems.

AV8TOR

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RE: gas fuel with glo plu... - 9/25/2008 7:48:29 PM   
clocknut


 

Posts: 96
Joined: 2/2/2008
From: Macedonia , IA, USA
Status: offline 		Thanks Av8tor that was what I needed I will do that. Don't need any corrosion.
I have A new victim that I'm working on it is A 53 cc ? came out of A john Deer chain saw it was part of the case so I had to cut it all out,but it is turning out great has the side ways M on it like A Mac.It has two rings and the piston has been lightened up.I will be running it on gas/glow also.
Thanks clocknut

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RE: gas fuel with glo plug... - 9/25/2008 8:22:11 PM   
RysiuM



Posts: 1409
Joined: 4/22/2003
From: Elk Grove, CA, USA
Status: offline 		Capitan,

Let me add my 2 cents.
1. When you run gas-glow fuel the mix must be richer, than running just gasoline. My Zama carb that came with Poulan 25cc can not deliver enough fuel for that even when both needles are wide open. It can be tuned easy on gasoline, but more than 10% methanol in the fuel makes the mixture always to lean. This is the reason why I run gas/glow with 6:1 ratio and glow plug powered all the time.

2. This happened already twice. One day my engine did not want to run. I opened the carb and found some kind of gel/goo on the internal filter. Easy to clean tho.

And the final note, all my gas-glow engines run kind of funny making sound like missing every second or so. But they run very stable with good transition and reliable low idle. I'm not sure why is that missing sound, but it is only in the air when plane is flying. On the ground they run without missing a bit. Changing the mixture does not make this sound go away. I just used to live with that.

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RE: gas fuel with glo plug... - 9/25/2008 11:45:02 PM   
captinjohn


 

Posts: 6287
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline 		RysiuM, I did set mixture richer. You are correct there. This engine MB290 is a strange one. This morning it was cool and it started with one flip and actually ran in the rignt direction. It also seems to have more compression when stone cold. It will not take any throttle untill it is warmed up for at least 4 nin or more. It will sometimes rev up with no miss but before I can get tack on it it starts to run with the miss you talk about. sometimes it just quits. It may be to big of carb, but on gas and spark it ran better.. The Gas/Glow would give a low lower idle...but not reliable. After engine is real warm starting gets worse, but on spark it always started good until ignition quit. I checked the temps everywhere on engine with temp gun. Hottest was 246 behind plug on head. Carb about same as outside air temp. Exhaust (muffler) was hot in one area...350? I got several notes I took when running engine. I cannot conclude anything from them that tells me anything. I did notice vapor coming out of around throttle shaft when hand starting. When I got it going ...I did squirt some WD-40 around shaft, while engine was on idle. No change in RPM. So a little vapor only says very small leak. I guess I could make a spring loaded seal to cure any leak there. I think its different carb time though. Maybe this carb is too big...it is still more thirsty than I thought it would be. RysiuM, I like the input you gave on trouble shooting your engine over the last several months. I think we need more input here on how to solve the different ways of getting Gas/Glow engines to run better from all the guys out there. Please guys get some words on here to help solve the mysteries! Capt,n

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RE: gas fuel with glo plug... - 9/26/2008 4:40:10 AM   
clocknut


 

Posts: 96
Joined: 2/2/2008
From: Macedonia , IA, USA
Status: offline 		Rysium thats what my engine is doing.It sounds fine on the ground but you hear that missing noise as it flies by.I have A 13.5 mm walbro on it and I can't be more happy about the way it starts,idles and transitions.I just thought because of that sound it might be A little rich on the high side, but maybe I too will learn to love that sound.
I now have two guys wanting to try the gas/glow!!
Thanks

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RE: gas fuel with glo plug... - 9/26/2008 5:15:30 AM   
captinjohn


 

Posts: 6287
Joined: 1/25/2002
From: Hesperia, MI, USA
Status: offline
quote:

ORIGINAL: clocknut

Rysium thats what my engine is doing.It sounds fine on the ground but you hear that missing noise as it flies by.I have A 13.5 mm walbro on it and I can't be more happy about the way it starts,idles and transitions.I just thought because of that sound it might be A little rich on the high side, but maybe I too will learn to love that sound.
I now have two guys wanting to try the gas/glow!!
Thanks

What engine are you running? That is a big carb!!!! Thanks Capt,n

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I never met a engine I did not like !

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