my cap was 15 lbs exactly and I think at 13 it woud fly alot better.The poulan 46 I had was 4 lbs this one is 2.25 lbs and with a little more weight cutting I hope to get it under 13 lbs.I will have it running tomorrow and will post some #s

here is another pic. I found a place I can get methanol fot $2.85 a gallon and a go cart shop that has nitro for 38.00 a gallon and run amsoil 130 to 1 so a gallon at 15% notro is only $9.00 .If I can get it to run good on 0% nitro it will only cost me $3.00 a gallon.

Darin

Darin, are you sure Amsoil 2cycle oil is compatible with methanol? Also, I don't think your engine is gonna last very long on 130:1 methanol/oil ratio - especially if you want to run upwards of 15% nitro. I've always been told 4-5% minimum.

I'm relatively new at home brewing glow fuel, so please correct me if I'm wrong.

this is a bearing supported crank and with glow fuel it takes 50% more fuel to do the job so to get the 100 to 1 mix I actualy should mix at 150 to 1 because the carb is flowing 50% more fuel.the quantity of oil should not change with methanol,with the methanol the engine will run more cooler and with the nitro even cooler yet.my hp2 oil says it mixes with methanol, I need to check amsoil,I may end up using the hp2 because it has a single ring.but then again I may be wrong, what do they recomend in a g23 glow.I think I should get the oil figured out before I fire it up tomorrow so let me know asap.any help is great.

Darin

Horizon recommends 5 Oz. of Castor per gallon methanol for the G23 glow, which works out to be about 4% or 25:1 oil content by volume. That's consistent with the general recommendation for oil content for methanol, which actually needs a little more oil than gasoline premix since alcohol has very little inherent lubricity and is single fraction.

Personally, I have my doubts about Amsoil's 100:1 claim even for gasoline mix. It might be okay for racing application where you need to wring out every last drop of HP, but the engines are typically stripped and overhauled after every race. For sport applications, I would stay above 50:1. Considering 150:1 is less than 0.7% oil, I don't think your engine will appreciate that very much.

BTW, doesn't more nitro mean higher combustion temp? That's why you'd want to use a cool plug for high nitro racing fuels. Or do I have it messed up all these years?

Hey BN120, and your carburetor is compatible with alcohol??? It seems to me that you have to swing to a compatible carb for gas to glow conversion. Hope this can help.
At a local home depot I saw today a poulan pro 46cc machine, so I started to hear some voices inside telling me "Get it get it!!".
But I already have 4 ryobi 31cc...witout a house for them.
Tato.

yes the carb works good I went in and enlarged all the jets.

Darin

well I finaly got to fly the cap after the funfly today ,I have flown the cap alot with the poulan 46 but I wanted to do the first flight without all the spectators just incase of a dead stick or something.I fueled her up and a single flip she started right up without a tach I think it is turning around 7200 on a 18x8 wide apc prop with 0% nitro and 9% benol castor.just did check flight for the engine the first flight,the second flight was alot more fun,she has unlimited vertical, still just a little shy of the poulan but I am also at 13 lbs. (2 lbs. lighter).WOW what a difference on landings I had to go around 2 times she floats in like she should.I can do a loop alot tighter now.The best thing is it cost about 4.75 a gallon for fuel not a big mess on my plane and no gas smell. My 46cc on gas and this 30cc on glow uses close to the same amount off fuel. I never changed the tank and I get a good 15 min.I am very happy I did this conversion.I will try a couple props tomorrow and tach it for a good reading.Oh by the way thanks Terry at CH ign. for the glow plug adapter and carb,mine worked ok but the transition was lacking because it was to big of a carb.

Darin

Thats what I'm talkin about, nice stuff.
I am going to do the same.


I wish I had the balls to comvert a DA-150 to glow for my bud nosen 105" wingspan P-51 I am going to build. Can you say 250 mph +?
That sacres me., I scare me.

Even if YOU had the balls, the DA doesn't..A DA 150 will not swing a large enough prop to go 250 mph..We have been racing Giant scale for about 10 years....Our best speed with a 289cc Herbrandson twin on glow is 234 mph..The prop is a custom carbon fiber from Australia, costs about $250..It's a 23x27, turns about 9400 rpm...The best speed with an Aerrow twin, 200cc, is about the same with a slightly smaller prop turning over 10,000 rpm...
A Nosen P 51 would disintegrate at that speed....

I actualy tached the engine and the apc 18x8W was at 8050 rpm
I had a elcheapo dynathrust 20x8 and it made the verticle
even better just like the poulan now but still 2lbs. lighter,
however I did not tach it but I will check the dynathrust
prop next time I fly.I am now building another 017 for my
new gsp katana.

Darin

Nice info rcign1.

I figured I didn't know what I was talking about, but you could dream right?
I wonder what the hp output of those motors your talking about is. You ever try running them on alky? Thats what they do in drag racing to get more power, actuall all kinds of racing. But you knew that, because it seems you have a good knowledge of trying to go fast. I was just wondering if you considered it for your planes.

Actually if I got my Bud nosen P-51 to go over 100 mph, I'd be happy.

antslake, "on glow" means running on alky. Ralph's racing engines are already burning alcohol, not gasoline.

Oops, I missed the part where he said glow.
Yes I do know what glow means, if I could only read right now.

I am running a tartan twin on glow, and love it.

bn120, if you will eloborate on what exactly you had to do to this engine, besides add glow plug, and maybe change the carb gaskets and diaphram. I have never converted a "weed" engine for anything and would like some advice to get started.
I will be using homlite leafblower motor. Not sure the size, but I think its bigger than 23cc, as it was the better more powerful model.
Also how would the prop bolt up? Do I have to get some parts for this?
I haven't extracted the engine yet, so I haven't got a good look at it.

Thanks

BTW Ralph, how do you land with a 23x27 prop? My ignorance is showing here, as I've never had a prop with a larger pitch than 12 - and I thought that was a fast prop. I've never been to an Unlimited Reno style racing event, either. Facinating.

they are totaly different engines, type in homelite and you will have more info than you can shake a stick at.

Darin