Ive got me a glow plug adapter ordered from C-H ignitions. When it gets here, Im going to try the gas/glow option on a homelite 25.
My question for anyone is: how much fuel are you mixing at one time? (maybe a gallon?) Ive got in my stash some cool power 20/20 pro pattern blend, some 30% heli fuel, and some omega castol 10% . Im assuming to use the synthetic stuff?
Without re-reading all the good info here on this thread, can you tell me how many ounces of glow fuel I should mix to how many ounces of gas to try my setup when my glow adapter arrives?And its just glow fuel and gas right- nothing else added to the mix?
Thanks much guys!
John

1 part glow fuel 2 parts premium gas.

I'd start off with 6 ounces of glow fuel and 12 ounces of gas.

It's a small amount and will leave room for adjusting the formula.

Of course use the 10/10 fuel, and go from there.

So you are saying use the 10% omega castor fuel for the mix INSTEAD of the synthetic cool power? The only 10% fuel I have is the omega cator stuff. the 20% and 30% heli fule are both synthetic. I just dont want to burn anything up (especially since I dont know what Im doing in the first place[sm=drowning.gif][sm=lol.gif]
Thanks Ralph,
John

The fuel you use needs to have an oil content of only 10% and a nitro content of 10%. Castor/synthetic is fine.

AV8TOR

There is alot of fuels at your lhs for r/c cars. The fuel is 10/10. You just have to read it. There is one fuel that I get for mine that is in a can and I can not think of the name of it. it does not have the oil on the can. I called the co. and asked them what was in it and they said it was 10% oil. Now the oil is all caster. I have had to probs with this fuel. It seem to work grate with all my gas/glow. When I got back to my lhs I will find out the brand name of the fuel. That is if you can not find 10/10 fuel.

Paul

I have a 26cc Poulan that I converted to gas/glow. I am looking to replace the Zama carb with a Walbro.
So give me some suggestions as to which Walbro I should buy.

I tached my engine last week. It runs APC 16.5 x 5W now at 7500 rpm. And Piper Cub performs better. The glow plug still holds well.

Tinsink a carb off of a chainsaw around 36 cc will work good most around that cc will bolt up to the weed eater but you have to port on the intake spacer. I got a big bore carb a few years ago frm the hobbie shop they only only had one and dont remember the #s from it,but was around $40-45 bucks.The carb I have on my homelite now is off of a 36cc poulan chainsaw.so im shure abt all of them interchange.you just have to make shure the small hole from the head to the carb spacer to the carb is lined up or isnt blocked,and if your going gas/glow you have to drill it out a little bigger and adjustments on carb.I think a few pages back on here someone posted abt a 11mm carb works great, I dont remember for shure.I think it was av8tor.

Thanks for the information Dinkster. I still don't know why you have to bore out the small hole in the spacer. Obviously, the spacer port has to be enlaged to at least the size of the carb opening, or I guess one could just buy a big bore spacer. I have been reading that the Walbro 257 is the standard for this type of use, however, it seems many people are modifying this type of carb, although I don't know why as it seems they work just fine stock.

yea if your running 2 stroke gas and not gas/glow you dont have to bore the spacer pump hole out.I havent ever bought a spacer just mod my oun.the hobbie shop I go to has to order stuff I use and I dont like to wait lol.

Just wondering if anyone knows abt what HP a stock 36 cc poulan chainsaw has and abt what you can get out of a moded one? Im thinking about 2 HP stock what do you think? Im going to mod it mabie even with gas glow to get all I can out of it.I made some exhaust out of a homelite and green machien weed eater shaft last night.and if you dont have a welder the housinge for the bearings in bottom of the homelite shaft makes a great way to hook the two sizes of shafts together.I got a lawn mower from my dad and someone wired a tune pipe for like around a 50cc drt bike on it I took that off and put that on it.looks cool, this engine will be for a electric scooter converted with this engine.I know not rc,But it might just be gas glow.the kids would hardly ever ride it so the gas wouldnt be a problem.and Id like to see the power gains.kinda a experiment.

Hey guys...., Ive received my glow adapter in the mail from C-H ignitions a day or two ago. Two questions about that; (1) whats the best way to tighten the adapter snugly into the head of the homelite so it wont vibrate out and, (2) how in the world do you tighten the glowplug inside the adapter? There is no room to fit a glowplug wrench in between the walls of the adapter and the glowplug. Maybe grind a socket real thin on a grinder or something?
Thanks in adavance for your help.
And I wish everyone a very MERRY CHRISTMAS!!
John

1) Put a sparkplug gasket on it and just snug it.

2) I have a 1/4" drive set and the scoket from it works. It is a snug fit though.

Turned down a 4-way wrench enough to get inside the adapter.

Well we had great sucess yesterday as my weedeater 21cc and my friends poulan 42cc ( the one from princess auto ) were both sucessfully run on the glow/gas setup. We mixed 1 part 10/10 glow fuel to 2 parts premium gasoline. Flywheel, coil, and spark plug were removed and after breaking all the ceramic off the spark plug we inserted a 3/8" pc of solid aluminum rod, then we tapped the 1/4/32 thread and inserted an OS type F fourstroke plug. We spent quite a while setting up the carb and lots of time flipping the prop ( wish we had a starter big enough ), but finally we got them running, even when the glow ignitor was removed i was surprized that the 1 part glow fuel was enough to keep the plug lit and the engine running. Still have lots of tweaking to do to get them dialed in, i don't have #'s on the 42cc but so far on my weedeater 21cc i got 7200rpm on a 16x8 prop which by my Thrust/HP calculator is 1.4HP and 10.19lbs of thrust, not bad for a free, (given to me) old weedeater, but with some more tweaking i hope to better those #'s. Haven't checked the 42cc yet but my 21cc weighs in at 32oz and that's still with the steel muffler, i will be making an aluminum one soon. I will post some pics when i get my camera back.

Thanks for all your help throughout all the pages on this thread, although i didn't have time to go thru all of the pages on this thread i guess i read enough to get to 2 different converted engines to run.

Congratulations! It's a neat system. I have now put my Echo twin cylinder engine on my Giant Stik, but I had a Poulan 42cc on it running Gas/Glow. It pulled really well. That Giant Stik is fairly heavy, but the Poulan didn't seem to notice and would pull it straight up until I would quit. Very short take off runs as well.

Here's a couple of pics...

AV8TOR

about how much time can you get out of a 35cc gas/glow with a 12oz tank. I can put a biger tank in my plane but it will take some work to do so. If I can get 12 to 15 min out of a 12 oz tank I will just run it.

Paul

How did you insert the 3/8 aluminum rod in sparkplug? Thanks Capt,n

KI8FR -- I've never timed my consumption, but I think that will work for you. The tank in my Giant Stik is about 14 oz. I believe, and it flew with the Poulan 42cc for an adequate amount of time. Usually landed with fuel left over. (and I never fly straight and level for more than a few seconds at a time; lots of aerobatics.)

AV8TOR

Thats cool. Thanks
Paul

Capt,n, actually i forgot to mention that the plug i destroyed was from a snowmobile, NGK BR9, the hole left after removing the ceramic was .368" so we jammed in a pc of .375" aluminum rod, we also cut the threads on the spark plug shorter too. I will get some pictures today.

Hey yall, I have a 25cc Homey on glow running a Perry carb for 25-35cc engines. It runs very well, turns a 16x8 around 7800 it is much lighter than a Walbro and much easier to set. I have timed fuel consumption through 3 entire tanks @ WOT and it burns slightly under an ounce a minute. The Perry is easy to find and the intake is easy to make. I made the glow adapter from 3/4 rod stock and machined it as thin as possible to keep the plug low in the head. I run no gasket under it, it is red Loctited in place. I have enclosed a few (not real good) pics.

You did a grate job on that one. Now you have that one running on just glow no gas in it at all?

Nice work.

Which glow fuel are you using?

I was just wondering ... Has any body tried mixing gas with glowfuel to run in a glow engine?

Say take some 20/20 fuel mix it 50/50 with gas and run it in a big Super Tigre?

For other engines you could simply add oil as needed.

If this will not work why not?

I was just wondering.