it is just some off shore brand called AIP 52 inch

No .. glow fuel is already about 110 octane.. so the one thing you don't want to do is lower the compression but what you do want to do is use a good high octane gas like 93 or higher.. I was using 100LL aviation gas but the 94 octane pump gas seems to work just as good..

can i use original carburetor to try a gasoline? just change a glow plug for gasoline like os G5@@jeffgrain1417

the glow carbs are designed for glow fuel.. the porting is designed to deliver 4 or 5 times as much fuel compared to gasoline.. even though some people have got them to run.. and so have I , but they have never got them to run successfully.. and I have certainly never seen one fly.. along with if there are any rubber seals in the carb, like the needle valves.. then gasoline will destroy that rubber as it is meant to be used with methanol.. when I first started this , I had met this Chinese guy that told me it could be done.. but he also said .. It is all about the carburation... you need the right carburetor for the right fuel.. and he was right.. with using a glow plug with gasoline you need good gas with no ethanol added.. then you need to add about 15 percent ethanol.. the reason is so you can control the amount of ethanol.. this is important because the glow plug needs the ethanol to work so the mixture must be carefully controlled@@wildan1340

@@jeffgrain1417 what type walbro carb are you using for this engine? How about intake manifold? Are you add more spacer from carb to hole crank? I have 2 jba 91ar engine. I have plan to convert one of them to gasoline. maybe you have suggestions what carburetor should i use for my engine. Sorry for my bad english 😅

that particular engine was a supertyger 25cc so the carb was size for 25cc it was also the first one I did and there where mistakes made.. check my other videos.. but each engine from 15cc and up had the carb sized for the engine.. for the carb you would need to use a lathe to machine an adapter like I did to go in the hole with a flat surface for the warbro to bolt to.. no worries about english.. here in canada there is a lot of broken english... what country are you in..@@wildan1340

Well first off .. I am a retired heavy truck / equipment mechanic.. second.. it was only on the test stand for the video.. next.. there is very little oil comes from the exhaust.. and what oil did come out.. would most certainly not cause a problem even if the engine had been left inverted.. most everybody runs their gas engines inverted..

yes I usually made adapters.. I have a small hobby size metal lathe

well they didn't exactly engineer it that way.. that is a standard warbro carb design.. fits pretty much any engine.. you would normally use aftermarket arms,, two different arms ,, one a bit taller than the other to offset your linkage hookup.. just that the muffler gets in the way of a taller one... so I used two short ones.. and they run into each other.. so I had to shorten one..

if you look at this video kzbin.info/www/bejne/oILLi3qAq8h5g6s you will see the 54 inch goldberg ultimate biplane on the right side.. the plane was 12.5 lbs and it flew pretty well.. I am a very aggressive high speed sport flyer and it did not have quiet the punch I wanted to I swapped it out for the 30cc version and now has unlimited vertical climb

@@jeffgrain1417 I’m building a Vintage 100” OK Big Rainbow, big n slow lol. Calls for a FT-120 and I’m thinking a 20 is probably enough, I’d like it to fly pretty scale. Not sure what I’d gain on the twin other then coolness they appear to be the same HP. Did you sell the twin?

@@HootisGarage The FT-120 is a glow fuel engine.. and will use a lot of fuel.. the rcgf 20cc is gas and uses very little compared to the glow.. the twins look and sound cool.. but they also have less vibration.. I had a 17x6 prop but a 16x6 would likely be a better choice for a slower plane.. not sure what this big rainbow is ,, but if it is like a cub style.. the 20 would be likely very scale.. but keep the weight down to about 10 lbs.. I didn't exactly sell it.. a buddy was stuck for an engine and he made me a deal I couldn't turn down.. trade the 20 for his 30 as well a 15 for a 15 to fit his plane and I did all the install and setup.. and yes the maiden.. so that I handed him back a flyable plane..

@@jeffgrain1417 thanks. Yes it’s like a giant Cub. 👍🏻

check the thread replied to both question with a general comment..

the carb that I finally ended up using is sized for a 15 cc engine purchased from HK as to the warbro version I am not sure of the number.. but if you go to this link you will see the original setup from 9 years ago .. and follow it through my other videos.. it was a learning process that took a few years of experimentation.. kzbin.info/www/bejne/aaezm6CtbKitbM0

@@jeffgrain1417 thank you

you can't they went out of business and stay away from these ngh carbs... they are pure garbage

It is an evolution 10cc carb.. and the company is no longer in business.. and parts are unavailable..

It is mounted on my goldberg ultimate 57 inch , take off weight is 10.5 lbs.. 16x8 prop and does about 85 mph

This engine is going on my 1/4 scale Sig Cub.

Yes it will. I had a 26cc in my 1/4 scale cub.

lol... well lack of understanding.. the fact the engine is upside down.. makes no difference... only which way the exhaust is pointed..

You have to remember that I am running this engine in my shop.. so the sound echo's .. At time index 6:25 you will notice that I add the silicon muffler extensions and it softened the sound a bit.. you could try adding longer versions which would change the sound.. once out in the open at the field.. it sounds ok to me.. and in the air ,, sounds ok.. but if you are looking for that 4 stroke sound... then I doubt it very much..

Maybe leaf blowers are trying to sound like this. At least that's what I would like to think😆

nice getting ready to start my 56cc single cylinder real soon just a heads up gas engines can bend the connecting rods when they are bolted solid to a stand mainly the single cylinder they recommend only starting the first time on the plane due to it allowing it to freely move when vibrating but nice job looking forward to hearing mine

very little vibration.. nice smooth starting..

just remember.. some where in my videos I talk about fuel.. what I use here in canada because the low grade can contain up to 15% ethanol.. so one day it might have none and next day 15% .. so I purchase the high grade with no ethanol and then add the ethanol myself to control the amount needed for the glow plug..

I don't remember the exact model number but it was purchased as one to fit a 25 to 30cc engine

Hi Mike.. thanks for your interest.. but the parts for all of my engines are custom made here.. you would need to take the carb out and take the engine to someone who can machine.. made from aluminum it was turned down to fit into the engine.. then the inside was bored out to the same measurement as the inside of the original nitro carb.. then a face large enough to support a warbro carb was machined.. then the holes to mount the warbro where drilled in.. it is all one piece,, sounds simple enough.. and it is to a machinist ... best way to describe it.. like a funnel but with a flat top.. actually I just got the plane down and cleaned her up ,, got the engine tuned in for flight.. been about a year since her last flight... and she has done many since that first maiden flight..

Happy to hear you liked the vids.. and yes a good !! quality synthetic oil is recommended.. use a high octane fuel or a fuel that you know contains zero ethanol.. this is the base , we add the methanol or ethanol in a controlled manor.. here in canada the pumps say ! " may contain up to " that is the catch.. you don't know day to day.. so the plan is start with pure fuel then add.. adjust according to engine performance.. little up or down.. the G5 is the best plug to use.. it was designed for gas engines.. stay away from NGH carb's they are pure crap

I am not sure where you could send the engine.. I only did mine to show others how and that it could be done.. If it is a saito engine.. there is someone who sells a conversion kit.. and www.morrisminimotors.com/ sells conversions..

thanks.. there is one more coming out as soon as I edit it.. It is about using different glow plugs and fuel mixes

Oh wow.. testing my memory.. but I would have to say it likely was.. back then I was doing a lot of variations of testing.. The reason is this.. I was using regular pump gas.. I normally use 100LL avgas.. and methanol will not mix with avgas.. Now to get a type F plug to work you need a higher mix of methanol to the gas.. like say 30% .. A type F is a very " cold " plug and will react more to the m/ethanol than say an A3 which is a very hot plug. see the included links below.. Who ever wrote that article did an amazing job explaining glow plugs.. You still need some methanol when using a G5 plug but just not as much, I typically get the 94 octane gas at the pump and then mix in 10 or 15% methanol to use with a G5.. This is why OS says to use just regular gas because at the pump you will see a sign that says, " may contain up to 15% ethanol .. This would account for the various reports I have heard on the OS ggt10 and 15 having issues running.. sometimes excellent and others not so good.. variations in the ethanol content in the gas.. So I buy 94 octane gas , no ethanol , add 15% methanol or ethanol.. and 30:1 oil.. this way I know how much ethanol is in the fuel.. I also use a high grade of synthetic oil.. In the video of the four planes running in my yard.. that engine would have been running the mentioned fuel mix and a G5 plug which it flies on these days.. The above video was just me messing around with fuel mixes to see what I can and can't do.. The second link is an excellent demonstration of how the platinum reacts to a methanol / oxygen environment.. Once you have an understanding of how this works you will understand how a glow engine works.. The primary type of fuel used is not really as important as getting the right conditions for combustion.. The methanol/ ethanol is used as a catalysis to the platinum in the plug to start the combustion and that in turn will ignite the gasoline.. www.hooked-on-rc-airplanes.com/rc-glow-plugs.html kzbin.info/www/bejne/fITHc3Vnq6d3gbs

@@jeffgrain1417 Ok, but does the catalys reaction with platinum work with only ethanol and no methanol? It does not make sense to me that the g5 glow plug needs methanol to run as it is advertised for gas engines. Maybe the g5 uses the ethanol in the gasoline used nowadays to make the reaction

@@Hans45 methanol or ethanol it does not matter, I have tested both.. just about any alcohol will react with the platinum.. even the moonshine I make.. ethanol... if I could get the purity up higher than 90% ,, I might try using it.. but hate wasting good drinking alcohol :-)) And yes.. the G5 does need some amount to m/ethanol to react with the platinum in the plug.. because there is no guarantee on the ethanol content in gas , would explain why some people have had issues with the GGT10 & 15.. today at the pump gas might have 15% ,, next week it might not have any.. that is why I buy the 94 octane and add my own.. A G5 plug will not run on just straight Gas.. this is why I don't use my AvGas. it will not mix with m/ethanol .. I need to add the m/ethanol to get the plug to work.. so that is why the glow engine conversions use 94 octane pump gas..

@@jeffgrain1417 Ok, good clarifications. Where i live there is always 10% ethanol in the pump gasoline unless stated otherwise. When you mix your gasoline with methanol, is it pure methanol? I dont have any place to buy it pure, only glow fuel is available with nitromethane and oil. Is it a problem to mix nitro with the gas? Thanks for all of your answers

@@Hans45 I live in Ontario Canada.. and here we have crap for gas.. The ethanol I use is called bio-flame purchased at homehardware.. it is used for those decorative table top burners etc... or you can buy methanol at homedepot or places like that.. and it is suppose to be 100% pure.. As far as mixing nitro with gas ,, so long as it is pure nitromethane then no problem.. if you mean mixing nitro glow fuel with gas then yes that is a problem.. the type of oil in glow fuel " castor or the synthetic version " does not mix with gasoline.. and will separate.. It is a strange thing of chemistry at a molecular level.. 2 cycle oil will not mix with m/ethanol ..try putting some in a sample of glow fuel it will not mix.. but it will with gas.. and the m/ethanol will mix with gas.. so at the atomic level the 3 parts will bond together.. way beyond me being able to explain how or why..

That may be an up coming project.. I just have not tried , yet :-))

@@jeffgrain1417 What fuel/oil mix do you use? The saito gas 4 strokes use 5% oil, but does it make any difference when the engines was made to run on glow fuel with a more rich mix? I am just worried of premature wear caused bu the leaner mix with less oil when run with gasoline

@@Hans45 no problems yet, but I use 30:1 mix , no reason you could not use a higher mix of oil.. like 20:1 you just have to remember that oil does not really add to the combustion and therefore degrades the amount of power the engine will put out..

no modifications to the compression.. just use a higher octane gasoline.. I personally like to use 100LL aviation gas.. or 94 octane

yup here are a couple of flight videos. kzbin.info/www/bejne/Zn-od4p9r8igeMk kzbin.info/www/bejne/oXTEp6ykmLOpf5I Out of all the gas conversion videos I have seen by other people.. I believe I am the only one to actually show some in flight..

@@jeffgrain1417 Amazing! do you have FB ? o email?

email.. [email protected]

@@jeffgrain1417 No, you're not the only one... Take a look at my channel... Strictly spoken, this was my first SUCCESFUL conversion: kzbin.info/www/bejne/Y2fYfZyud71keMU First fixed wing was about a year and a half later: kzbin.info/www/bejne/gXjToH2PmNOCmsk

Idiot

I have not had a problem with over heating yet.. but I do carefully match the prop to the engine so not to load the engine to much.. as well I set the timing to the correct position ,, to much timing can give you more power, and more heat.. and I use a good quality oil..

Then you do something wrong...

With most RC cars you can't. The reason is that these CDI ignition units don't work past 15-20k rpm which will cut out nearly half of an RC car engines operating rpm range.

I am not a car guy.. but I see no reason why you couldn't do it..

thanks for the excellent reply Robert.. This video was from over 6 years ago.. I have made a lot of changes and improvements since then.. The only reason I wan'ted to add the methanol was for the glow plug.. since the platinum in the glow plug relies on the methanol to create the reaction to keep the glow plug working. So I just stepped back to the 94 octane.. for ethanol free gas and then add a controlled amount.. so far it seems to work very well.. this same engine is now in a Carl Goldberg bipe and goes like hell...

check out this video.. kzbin.info/www/bejne/oILLi3qAq8h5g6s&lc=Ugz1Sltc6gvKXN0baWp4AaABAg

for an os fs-70 I would say to use an evolution 10cc carb if they where still being made.. but that line of production has been dis-continued. A warbro carb for a 10cc engine would likely work but the only one I know of would be from the RCGF 10cc brand. just about any carb from a 10cc gas engine should work. but stay away from the NGH line of carbs as they are garbage.. I purchased two of them and have yet to get them to work properly..