Electric, Nitro, Diesel, Petrol, Balsa, Foam, plastic or Ply - Whats your likes and dislikes ?

TheFlyingBrit

Legendary member
I grew up in the 60s and in those days models where made from Balsa. All I could afford at the time was free flight rubber powered models, made from balsa kits with tissue and dope. I was amazed when a mate showed me a plastic P51 Mustang, control line model with a Cox 049 engine, it never flew by the way but sounded great and looked good.
I progressed on to gliders, then control line balsa planes with 049 engines and eventually onto Free flight models with small diesel engines. In the early 70s along with my brother we bought a Mercury matador kit, this was the first large scale plane we had and again it was free flight and had a diesel engine. Sadly it only flew once before an untimely demise in my fathers garage.
After a long break I returned to the hobby in the 80's and it was all nitro engines and radio control. I progressed from 3ch to 4 chanel and was enjoying the hobby again. Then the next change came in quick, electric flight with brushed motors and Nicad battery packs. I built a Golberg Electra which I still have to this day. The motor was drastically underpowered and it was heavy due to the power pack but it flew, sadly I didn't get around to a gearbox upgrade.
My wife at the time bought me a plane for Christmas, an Extra 300. It had a plywood frame with thin foam sheeting and a plastic covering. The wing was a foam core with plastic covering. Sadly that only flew once, I asked an experienced pilot at the club to maiden it for me. After 5 minutes it crashed unceramoniously, I still have some of it and may rebuild it one day.
Shortly after the hobby once again to a back seat for personal reasons until 2 years ago. After buing my son a drone for Christmas, I suddenly got a taste for the hobby again.
Lots had changed including the introduction of 2.4 ghz radios. Nitros where falling out of favour and where being replaced by electric, with powerful light weight brushless motors and Lipo batteries with more power and capacity than the old NiCad packs. Even the models where changing, they where now made from various types of foam and plastic and EDF engines to power them. The changes continue, now petrol (gas) engines are becoming popular and the poor old nitro engines are getting pushed back into the same catagory as the diesel engines.
The biggest change for me has been turbine engines and jets, these are really impressive both in appearance and performance.
However, part of me still looks back on the days of balsa and nitro engines with fondness, although I dont miss the castor oil and having to fuel proof planes. I also dont miss having to take all the gear with me including: fuel, starter, battery, spare glow plugs and loads of tissue to wipe up the mess. I love turning up at a field with 3 or 4 electric planes a selection of batteries and within minutes I am flying. But the sound is missing and the smell of a nitro engine sadly its catch 22.
The biggest improvement is the Radio gear. I no longer need a selection of crystals, or to worry if someone else is using my frequency. My new transmitter can hold hundreds of planes and each individual planes set up, within seconds I can swap from a Piper cub to a glider. For me thats the biggest and best change thats come to the hobby.
Although I fly mainly Foam, elctric planes these days I still love to see a scale balsa plane flying past with a proper engine. Call it reminicing or nostalgia Its an era of modelling that I will allways look back fondly on.
What do you think about the changes the hobby has gone through ?
 

speedbirdted

Legendary member
Wooden planes that burn fuel are the best ones :p Don't get me wrong electric has its benefits though. It plus foamboard are probably the king of rapid prototyping. But the tradeoff is foam airplanes rarely last very long regardless of how well you build them. Meanwhile my inventory has balsa airplanes older than me that I still fly. Paolo Severin said something like the closer you get to adopting the construction methods of full scale airplanes, the closer the lifespan of a model will get to its full size counterpart (and judging by what his airplanes look like I would not doubt him!)

I personally don't mind the extra work that comes along with flying fuel planes. Once you get good enough at it, it pretty much becomes second nature. The only electrics I fly are on the smaller end of the scale or for indoor flying, or otherwise any application where nitro simply doesn't work. I did consider getting into really big electric planes, but when you actually do the math, the cost of buying lots of good-quality batteries, controllers and motors (i am NOT talking about hobbyking here!) far outweighs the cost of just putting an engine on it instead. Plus, as you said, not having the noise to come along with it kinda takes the soul out of it...

A sidenote on diesel engines. A key reason I can think of for these not being more popular is the non-availability of a source of cheap, non-diluted ether in a lot of places. Maybe it also has something to do with usually having to mix your own fuel, but that's not a hard task. They've got so many advantages over glow power... no need to buy plugs (and with the cost of rhodium going insane the prices ain't gonna come down) cooler exhaust, quieter, more power... I heard a story about PAW doing an experiment where they mounted an 18x6 prop on a 35 and let it run for 5 hours or something, and it only ran like 3500 rpm but it did it perfectly happily because the compression was reduced suitably. Do that with any glow engine and it will probably suffer from overheating caused by preignition in a relatively short period of time, unless you put a ridiculously cold plug on it (and I'm not even sure anyone makes plugs cold enough to let you run a glow engine fully leaned at 3500 rpm...)
 

flyingkelpie

Elite member
So my likes and dislikes are:

Likes:

Electric, just because of how reliable it is and how it is easy to use.
Foam, because of how versatile and light it is.

In between:

Balsa, because it crashes REALLY bad 😁. That being said though it looks really scale. I have a old Piper Cub model from one of my great grandfathers and it looks really good. Thats without the paper on. I'm kinda scared to put the paper on because its one of my few memories of him but I'm sure it would look great with paper.

Dislikes:

Nitro, because the CG changes when you run out of fuel. That being said its still nice because as with the balsa it has a vintage look with it so yeah...

Plastic, because it crashes really bad but looks scale. I'm on of those foam scratch builders so I don't like them. 😐

Moulded EPO foam, because its not a scratch build. I like scratch building because of the satisfaction of knowing that you made a plane that can fly. However, it is good for training just because its from a store so its balanced and all well designed.

I don't really know about deisel, petrol and ply so I can't give my opinions about them except to say that petrol and deisel both suffer from the same problem as nitro...

I think I like both the old and the new just because the old just has that traditional feel to it. I dislike control lines just because it isn't truly what I call free flying. I also like the new because its more convenient and easier to make.

So I guess that my like and dislikes,

flyingkelpie
 

JennyC6

Elite member
As strange as this sounds on a forum built around electric RC aircraft, I won't give an electric the time of day.


Seriously.


Engines are my passion in life. I don't care if its a tiny teentsy little Cox 010 that literally fits on a keychain or a container ship engine so large I could climb in the exhaust port and sit on the piston. If it burns something to go, I'm interested, if it doesn't, I'm not. I also love the sound, the vibes, the way they fly, love the fact that I'm not chained to the charger stand and that I don't have to bring an ammo can full of hundreds of dollars of lipos just to fly more than 3 or 4 times. The grin factor, for me, comes as much from the mechanical marvel of modern machining thrumming away on the front as it does from flying itself; remove that marvel and you've removed my interest.

As for what the model's made of...that I don't really care about beyond it being fuel compatible. I've flown an FT Commuter on a Cox 049, I've got a ton of balsa ships. Also got tons of nitro cars; they're extra fun.

Now, I'm not gonna sit here and tell anyone else what to or not to fly, and I'm happy to help a brotha out if he's having trouble with his electric model. But I'm not gonna fly one myself.
 

JennyC6

Elite member
A sidenote on diesel engines. A key reason I can think of for these not being more popular is the non-availability of a source of cheap, non-diluted ether in a lot of places. Maybe it also has something to do with usually having to mix your own fuel, but that's not a hard task.

A lack of suitable ether is why I don't have any. I'm in no hurry to give up my glow engines for diesel even if I could fuel them but I do want to have a couple in my stash. Those PAW engines are stellar, legit OS quality, even if transition leaves a little to be desired(A tradeoff one makes with the compression on them; it should be a bit softer so as to back off the timing at low throttle/RPM which doesn't happen).

They've got so many advantages over glow power... no need to buy plugs (and with the cost of rhodium going insane the prices ain't gonna come down) cooler exhaust, quieter, more power... I heard a story about PAW doing an experiment where they mounted an 18x6 prop on a 35 and let it run for 5 hours or something, and it only ran like 3500 rpm but it did it perfectly happily because the compression was reduced suitably. Do that with any glow engine and it will probably suffer from overheating caused by preignition in a relatively short period of time, unless you put a ridiculously cold plug on it (and I'm not even sure anyone makes plugs cold enough to let you run a glow engine fully leaned at 3500 rpm...)
Yeah, but transition leaves a bit to be desired, there's no four strokes out there running on the cycle(Though Saitos can be convinced to run on typical model diesel fuels!), and they can start unexpectedly if they've ever had fuel in them due to the ignition system always being 'live'.
Nitro, because the CG changes when you run out of fuel. That being said its still nice because as with the balsa it has a vintage look with it so yeah...

Eh, that CG change is negligible. I don't really notice it in any of my planes and nitro is the only thing I fly.
 

flyingkelpie

Elite member
A lack of suitable ether is why I don't have any. I'm in no hurry to give up my glow engines for diesel even if I could fuel them but I do want to have a couple in my stash. Those PAW engines are stellar, legit OS quality, even if transition leaves a little to be desired(A tradeoff one makes with the compression on them; it should be a bit softer so as to back off the timing at low throttle/RPM which doesn't happen).

Yeah, but transition leaves a bit to be desired, there's no four strokes out there running on the cycle(Though Saitos can be convinced to run on typical model diesel fuels!), and they can start unexpectedly if they've ever had fuel in them due to the ignition system always being 'live'.


Eh, that CG change is negligible. I don't really notice it in any of my planes and nitro is the only thing I fly.

It won't? That's great! One of my relatives is giving me some of his old nitro planes. Could you give me some tips on flying and maintaning?
 

JennyC6

Elite member
It won't? That's great! One of my relatives is giving me some of his old nitro planes. Could you give me some tips on flying and maintaning?
I'd absolutely love to! Would be easier to raise me on discord for it tbh, rather than derail this thread or somethin. But yeah, I'd love to help ya enjoy the brappy side of the hobby. If you've got it I'll give ya my deets.

Reason the CG shift isn't significant is...well, mostly the ratio between fuel mass and airframe mass is so massively skewed in favor of the airframe. It does shift a little but it's not going to shift out of the aircraft's happy range unless it's already on the absolute limit of CG to begin with.
 

speedbirdted

Legendary member
A lack of suitable ether is why I don't have any. I'm in no hurry to give up my glow engines for diesel even if I could fuel them but I do want to have a couple in my stash. Those PAW engines are stellar, legit OS quality, even if transition leaves a little to be desired(A tradeoff one makes with the compression on them; it should be a bit softer so as to back off the timing at low throttle/RPM which doesn't happen).
The PAW engines are gems. I have an 049 RC which I got for a sweet discount a while ago. The carburetor on it doesn't do much though, it doesn't idle or transition terribly well as you said. I ended up taking it off and replacing it with the CL venturi they also make for it and it picked up about 500 rpm on the top end. Despite having no more displacement than a Cox it will happily spin an 8x3 prop. If I ever put it on anything, I think it would happily haul a sailplane up to altitude, because that would only be using full throttle. I was also given an ED Baby 0.46cc which runs similarly well, along with an unfinished crankcase casting for one, though I'm a pretty crappy machinist so I won't play with it any time soon...

The reason I don't fly or run either of them now is because now that Davis Diesel is kaput the only place I can seem to get any ether is from Tractor Supply. John Deere starting fluid is about 80% ether which would probably work but the stuff is horribly expensive...

Yeah, but transition leaves a bit to be desired, there's no four strokes out there running on the cycle(Though Saitos can be convinced to run on typical model diesel fuels!), and they can start unexpectedly if they've ever had fuel in them due to the ignition system always being 'live'.

Well... there was one 4 stroker diesel that I can think of. Enya made one some years ago. I think the way ignition timing is altered in fixed compression diesels has something to do with oil content in the fuel being changed. Also, ever seen a diesel mounted inverted? Cleaning a flooded cylinder is much more of a pain cause there's no plug to yank out :p
 

JennyC6

Elite member
The PAW engines are gems. I have an 049 RC which I got for a sweet discount a while ago. The carburetor on it doesn't do much though, it doesn't idle or transition terribly well as you said. I ended up taking it off and replacing it with the CL venturi they also make for it and it picked up about 500 rpm on the top end. Despite having no more displacement than a Cox it will happily spin an 8x3 prop. If I ever put it on anything, I think it would happily haul a sailplane up to altitude, because that would only be using full throttle. I was also given an ED Baby 0.46cc which runs similarly well, along with an unfinished crankcase casting for one, though I'm a pretty crappy machinist so I won't play with it any time soon...

I've watched a lot of PAW videos and none of them seem to transition like a glow engine does. And I'm about 98% convinced it's because the ignition timing...controlled by the compression ratio...isn't able to shift like it needs to for low speed running. Setting them is a tradeoff and usually you're setting them for optimal WOT performance and then just accepting what you get elsewhere.

The PAW carbs are a bit funky too I think. Having a true TN would probably help as well but IIRC they're all very rudimentary in nature.

If I did decide to dabble with diesel, and if I were able to acquire suitable ether, I'd probably pick up a conversion head for my OS 40FP. There's one on sale at RCGroups right now unless someone snapped it up in the last 24h or so. Dave McIntyre did a video or five on this conversion and, in the end, it ran pretty damn well dieselized.
The reason I don't fly or run either of them now is because now that Davis Diesel is kaput

Ye, it's a shame, wish the company had been passed on to someone else passionate about it. Double shame because they also sold some skookum upgrade conrods for the myriad of Traxxas 2.5, 2.5r, and 3.3 engines that love to throw rods because the OEM part is terrible.

the only place I can seem to get any ether is from Tractor Supply. John Deere starting fluid is about 80% ether which would probably work but the stuff is horribly expensive...
The nearest JD dealer to me is about 40 minutes away. I might stop in and see if they've got the stuff, how much they want, but I'm not holding out for a hero on that one. DAvis Diesel was a godsend; they'd just sell ya a metal gallon can full of premixed fuel ready to go.
Well... there was one 4 stroker diesel that I can think of. Enya made one some years ago. I think the way ignition timing is altered in fixed compression diesels has something to do with oil content in the fuel being changed.

Saitos will, albiet begrudgingly, run on model diesel fuel. Not sure how the longevity will be though; thing knocks like a door-to-door salesman on crunch week and it's likely due to the fixed compression. IF you could alter the fuel to tune that out of it this may be an option.

Also, ever seen a diesel mounted inverted? Cleaning a flooded cylinder is much more of a pain cause there's no plug to yank out :p
I've taken to simply turning the airplane exhaust-port-down and rotating the engine backwards until the ports are open. If it's a 4c I'll dip it where the intake is the lowest since that's whats gonna open and do the same thing. Clears 'em right out.

The cars are the only ones I have to remove a plug to clear a flood and that's because the pull starter's one-way bearing doesn't allow me to rotate it backwards.[/quote]
 
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speedbirdted

Legendary member
The PAW carbs are a bit funky too I think. Having a true TN would probably help as well but IIRC they're all very rudimentary in nature.

They're just very basic, and I think more meant for some measure of in-air speed control instead of being able to provide an idle low enough to taxi or land. The 049 at least has no low end mixture adjustment; it has an airbleed, but there's no screw to control it with. It doesn't matter much anyway as at the speeds it actually does anything at the engine becomes difficult to keep running. I think the larger PAW engines have more sophisticated carbs, but I'm not sure if they just use airbleeds too or actually have a dedicated LSN.

Double shame because they also sold some skookum upgrade conrods for the myriad of Traxxas 2.5, 2.5r, and 3.3 engines that love to throw rods because the OEM part is terrible.

Ha! I actually knew a guy who's 3.3 yeeted the rod before it even got through the break in. I guess that kinda had an impact on me because at the time I was more into cars and I thought I'd never try anything fuel powered... man 14 year old me would be very confused with current me. Guess I was just impressionable and unaware of Traxxas being junk. :p

I've never owned a nitro car though. I had a little tunnel hull boat with a K&B 3.5 outboard a while ago which was massive amounts of fun but I simply never got to run it very often as I didn't really live near any bodies of water large enough for it back then (and I didn't dare try running it in the Atlantic ocean as I didn't feel like flushing the crankcase, lower unit, and cooling paths every single time it got ran) Other than that, I've only ever flown planes. I actually sold off pretty much all my electric RC cars as for a while I had a track in town local to me, but it closed and now the nearest one is a 1.5 hour drive. After that, they were taking up space. I still have the boat somewhere but not the engine, because I sold it to a guy thinking I would convert it to electric which ended up never happening...

If I ever get into cars again I would like to try crawlers because living in the boonies gives me plenty of terrain nearby to use one on. Problem is other than the couple of madlads who've mounted those lil Toyan engines to crawlers it'll have to be electric. Hmmmm...

Saitos will, albiet begrudgingly, run on model diesel fuel. Not sure how the longevity will be though; thing knocks like a door-to-door salesman on crunch week and it's likely due to the fixed compression. IF you could alter the fuel to tune that out of it this may be an option.

OS mills will do it too! You can hear this one pinging even worse though.


I miss David's engine videos. I get that the guy has taken a new direction in life and you gotta respect that... but still, his videos were pretty kick-ass.
 

JennyC6

Elite member
They're just very basic, and I think more meant for some measure of in-air speed control instead of being able to provide an idle low enough to taxi or land. The 049 at least has no low end mixture adjustment; it has an airbleed, but there's no screw to control it with. It doesn't matter much anyway as at the speeds it actually does anything at the engine becomes difficult to keep running. I think the larger PAW engines have more sophisticated carbs, but I'm not sure if they just use airbleeds too or actually have a dedicated LSN.
I think they're all the same style that that 049 had, only larger to match the displacement. Large part of why I would convert my 40FP tbph; it may have an airbleed carb but it's an adjustable one and I know from flying that engine that the carb gives a great idle, transition.
Ha! I actually knew a guy who's 3.3 yeeted the rod before it even got through the break in. I guess that kinda had an impact on me because at the time I was more into cars and I thought I'd never try anything fuel powered... man 14 year old me would be very confused with current me. Guess I was just impressionable and unaware of Traxxas being junk. :p
Bwahaha, yeah I've heard that. The 3.3s are the worst offenders about it, and it all boils down to the design of that rod. Traxxas:

1: Did not double bush it

2: Cut a lightening groove up both sides of the rod

3: Did not reinforce the rod when upping the displacement.

The rods are *ok* in the 2.5 and 2.5r as long as you don't go crazy with the nitro percentage or the backflips, though even there they'll fail. The 3.3, however, just puts too much stress on the rod. The small end starts egging out, then when it gets to that groove the thing splits right down the middle. The Davis Diesel rod doesn't have that groove and is double bronze bushed so it will not fail like this. I used one in the 3.3 I got when I bought a Slayer Pro that had a blown engine.

I have a sneaking suspicion the ones where the rod fails during break-in have more pinch than normal. Not usually a problem but if the conrod is already overloaded to begin with.....

Fun fact: That engine hadn't yeeted a rod but it was on the verge. The small end was egged out real bad and the big end bushing had actually spun. The top end simply wore out before the rod could fail.

I've never owned a nitro car though. I had a little tunnel hull boat with a K&B 3.5 outboard a while ago which was massive amounts of fun but I simply never got to run it very often as I didn't really live near any bodies of water large enough for it back then (and I didn't dare try running it in the Atlantic ocean as I didn't feel like flushing the crankcase, lower unit, and cooling paths every single time it got ran) Other than that, I've only ever flown planes. I actually sold off pretty much all my electric RC cars as for a while I had a track in town local to me, but it closed and now the nearest one is a 1.5 hour drive. After that, they were taking up space. I still have the boat somewhere but not the engine, because I sold it to a guy thinking I would convert it to electric which ended up never happening...

Should grab one. I'd highly recommend the Kyosho Mad Crusher GP or Scorpion XXL. MCGP Readyset has a dreamboat of an engine in it and it's a live axle monster truck! Who can argue with a 3-speed in a live axle MT? The SCorp XXL is a 1/7 2wd dune buggy; built mine from the kit and put another KE-25 in it. Threw some Proline Badlands on the back as I built it, put FPV on it, absolutely love that car. So much fun to drive and super scale to boot.

I want to get into boats but I don't have ready access to a water body to run one on. If I'm willing to drive an hour down the road and set sail on the J Percy Priest lake I'll prolly pick up a nitro deep vee and nitro convert Dumas' great lakes freighter. I think a Toyan SOHC would work well for that.


If I ever get into cars again I would like to try crawlers because living in the boonies gives me plenty of terrain nearby to use one on. Problem is other than the couple of madlads who've mounted those lil Toyan engines to crawlers it'll have to be electric. Hmmmm...

I'm working on a Toyan Globe Liner project myself. might do a crawler if I can get my hands on the twin cylinder; it's much more powerful than the single without taking up much extra space. And my Slayer Pro has since peeved me off one too many times so I'm robbing parts from it for other builds...could steal the trans; I have reverse fitted to it....



OS mills will do it too! You can hear this one pinging even worse though.


Yeah but the OS Surpass HATED it. Wouldn't start without glow and, yeah, the ignition timing is all over the map. Ran like crap. The Saito peaked out and ran pretty daggum good; you could fine tune it and probably get it to live a reasonably long life running diesel but the OS Surpass is just not having it.
I miss David's engine videos. I get that the guy has taken a new direction in life and you gotta respect that... but still, his videos were pretty kick-ass.
Yeah, well still are. I don't know for sure as he's real coy about it, but I think he might have had an incident where one of his engines hurt Bella and he blames himself for it. That's my theory anyway; the channel started changing tact real fast after she died and didn't last more than a couple months before he started selling engines off.

Fun fact: The Toyan SOHC I own used to be the one he owned. I floated that I was itchy to build a tamiya semi around one in the comments, he offered to sell, gave me a good price, deal was done. If you want to see inside it look his videos on it up!
 

JennyC6

Elite member
T
If I ever get into cars again I would like to try crawlers because living in the boonies gives me plenty of terrain nearby to use one on. Problem is other than the couple of madlads who've mounted those lil Toyan engines to crawlers it'll have to be electric. Hmmmm...

.


Oh, hey, another point on the MCGP: they will go crawling if you want them to


Aluminum clutch shoes are amazing for that haha.
 

Piotrsko

Master member
Any of you diesel heads have any experience with .049 diesel conversion engines? I see that as of last look you could still get the heads and teflon compression pucks. I know they run but that's the limit of that knowledge.
 

TheFlyingBrit

Legendary member
Balsa, glow, and gas. That being said I love foam. But balsa planes fly the best imo! And glow and gas are absolutely fantastic
Ive flown WOT trainer's both nitro and electric versions and there didn't appear a great deal of difference in the handling and performance in my opinion. I have flown a few nitro planes in the past and they are great when everything works. Either way I bow to your experience in these matters, you probably have more extensive knowledge on nitro's than I do.
 

Bricks

Master member
What I am seeing is changing up Nitro engines to run gas as the availability of Nitro fuel is getting harder to find with out ordering and paying way to much for shipping hazardous materials. Many Nitro engines out there happily running on gas using electronic ignition module there is a slight loss of power and you want to make sure they get good cooling as they do run a little hotter.

Smaller planes I will use electric but anything larger gets gas or Nitro, mostly gas as I have five of the Evolution 10cc gassers that are just sweet running engines. Worse thing ever done is when Evolution quit making these they are the best running 40 size gasser ever made.
 

TheFlyingBrit

Legendary member
I must admit I would love to build a large Piper cub from balsa and run it on a petrol engine. I am a strong advocate of electric, but there is nothing quite like the site and soundof a model flying with a real engine.
I was brought up with nitros and still have a few, but I have to agree with Bricks, the cost of nitro fuel is becoming silly. I have an Enya 40 ss and was led to believe you can run them on a 60:30:10 methanol / 2 stroke/ castor oil mix, with no nitro additive ?
If that's the case it would be a cheaper option, I guess there is a trade off's less efficient burn, loss of power and harder to start but its an option.
Or should i just bite the bullet, sell them all and buy a gasser ? Think the other comment by Brick is significant - if its a small plane fly electric, but use petrol for the bigger stuff.
 

TheFlyingBrit

Legendary member
I gave away 5 diesel engines to an engine enthusiast in my last club, he fully serviced 3 of my nitros for me and gave me a Bixler 3. That was a fair swap I would say, there was no throttle control option on the diesels so they where only good for Free Flight models.
 

JennyC6

Elite member
I must admit I would love to build a large Piper cub from balsa and run it on a petrol engine. I am a strong advocate of electric, but there is nothing quite like the site and soundof a model flying with a real engine.
I was brought up with nitros and still have a few, but I have to agree with Bricks, the cost of nitro fuel is becoming silly. I have an Enya 40 ss and was led to believe you can run them on a 60:30:10 methanol / 2 stroke/ castor oil mix, with no nitro additive ?
If that's the case it would be a cheaper option, I guess there is a trade off's less efficient burn, loss of power and harder to start but its an option.
Or should i just bite the bullet, sell them all and buy a gasser ? Think the other comment by Brick is significant - if its a small plane fly electric, but use petrol for the bigger stuff.
Pretty much any glow engine will run on FAI fuel, which is just 80% methanol 20% castor and is somethign you can very easily mix yourself. Not too hard to get methanol, not too hard to get castor oil. You don't need nitromethane in the fuel, it just helps with power, idle, transition, and broad needle settings.

You might be able to mix nitro in as well depending on your area. Some guys can get the stuff some can't.


I'm also not sure why the stuff is so bloody expensive in so many areas. It's only 25 bucks a gallon where I am, and that gallon lasts me a couple months besides. I've got my changeover set to 60-size for 2c and 90-size for 4c, vis-a-vis gasoline or glow. I genuinely don't understand why my LHS can turn a profit selling the stuff for that while other shops won't let a gallon go for less than 40. What gives?
 

TheFlyingBrit

Legendary member
Pretty much any glow engine will run on FAI fuel, which is just 80% methanol 20% castor and is somethign you can very easily mix yourself. Not too hard to get methanol, not too hard to get castor oil. You don't need nitromethane in the fuel, it just helps with power, idle, transition, and broad needle settings.

You might be able to mix nitro in as well depending on your area. Some guys can get the stuff some can't.


I'm also not sure why the stuff is so bloody expensive in so many areas. It's only 25 bucks a gallon where I am, and that gallon lasts me a couple months besides. I've got my changeover set to 60-size for 2c and 90-size for 4c, vis-a-vis gasoline or glow. I genuinely don't understand why my LHS can turn a profit selling the stuff for that while other shops won't let a gallon go for less than 40. What gives?

I live in the UK and its easy enough to get hold of at present, but expensive. The last time I bought some, I had to order a minimum 4 gallons to get my order delivered. That cost me £64 GBP that's roughly $85 USD, as for trying to get hold of nitromethane no chance.

Methanol and 2 stroke or Castor are easy to get hold of and reasonably priced, making my own is an option, but some engines will run on the 80:20 mix others wont.

Petrol works out a lot cheaper to be honest, so that might be the way forward for me in the future. Plus it lasts longer ie flight times per tank of fuel. Its just the initial cost of buying a petrol engine versus a nitro.