Leo engines are produced in Taiwan by the same factory for the last 22 years. The .46 is a reliable, easy starting, powerful motor. With a weight of only 346g it outpowers most engines in its class and capacity.
This high torque glow engine can swing a 11x5 prop on standard 0% nitro mix.
Well Jordster I would like to see it. These day car engines are made for just that job. The have built in starters and much better cooling. Back in my dads day the Boat, Car and Plane motors differed little. This would make a great FAN car. Please just be careful with the prop. FIT A GUARD.
Well it does say in the listing ""This high torque glow engine can swing a 11x5 prop on standard 0% nitro mix."" but I though most 46's swing a 11 inch prop. I have seen one with a 9 x 7 or 9 x 6. It was in a smaller sporty plane.
Adiboy no but very cool idea. I did have a small AIR glow boat. The only mistake I mad was not to point the motor forward (I pointed it rearwards) Hence it got very hot. If I had pointed it forward the air flow would have keep it cooler. What do you think.
I'm having a hard time keeping it from leaning out at wide open throttle. It seems like the high speed needle doesn't get rich enough. Any ideas? What are the factory needle settings so I can reset them and try again?
I think I figured out why some seem to run awesome, and some destroy themselves after little use. It's a quality control issue with the carb. I've had two, one wrecked the liner fit after two flights, the other is great. I finally dissassembled them completely to find out.
On the one that works good, the spray bar on the carb points down into the engine. On the one that trashed the liner early, the spray bar points directly up out of the engine. So if you get or have one of these, make sure you can't see the little slit in the little brass tube you can see when you look down the intake, otherwise it's wrong!
What happens is you can tune the high end right, and you can tune the low end right, but the mid range is lean. Lots of flying happens at mid range, so this quicly overheats and wears it out.
To fix, remove the little screw on the intake side of the carb, then you can slide the barrel out sideways. There's a brass tube that's left sticking into the carb throat. Remove the needle, and !important! unscrew the needle holder from the carb body and remove the gasket. Then you can gently tap the brass tube out from the carb barrel hole on the right side of the carb. Then insert the brass bit back in, in the correct orientation, and push it back in. Give it a tap to seat it. Reassemble and continue with break in. If your engine has been running good for some time, you don't need to worry.
yup, just assembled wrong. Easy fix, but by the time I'd figured it out, the mid range had leaned enough to wreck the liner and I needed a new liner/piston. But that's another easy fix if you can find the parts.
So this is a great little FIX. You need to save you instructions in a Word Doc call Ideal fix and post it under the "File" section. Then in months to come when others have the same problem (and they will) we can find it.
So NO Jean. You can not compare a OS to a LEO. It is like comparing a Hyundia to a BMW. The both make a 2 liter engine but far different. The LEO is a ABC engine where the OS is all matched. Well the piston and liner is.
The Leo Piston and Liner are a perfect drop in replacement if you need to rebuild the AAC version of the OS SF.46.
And the Leo Liner is Chromed Brass, unlike the OS's Chromed Aluminium.
The OS 4d carby that came with the SF is superior in quality to the Leo Carby.
Of course 5pcntmin nitro fuel,you will need a glow plug (not on hobbyking)as they do not come with one,Engine mounts for your model,Fuel tank and fuel line.For this engine a propeller size of 10x6.To start it a glow driver and a chicken stick or battery powered spinner.
Sir for most things a 4 stroke engine give more torque than a 2 stroke. But with aircraft engines RPM is most important. Hence a 2 stroke for the same cc will swing a bigger prop faster. So it is 2 stroke OK I hope this helps
comprei o motor e demorou para chegar devido a greve que estava no brasil, ao chegar ao amaciar no terceiro tanque quebrou a biela e perdi o motor, agora nao encontro onde comprar as peças de reposição.
I do not think this would be good for a 3D aircraft weighing 2500g - it would only give you about 1200g of thrust with a 10x7 or 11x6 prop. If you mean will it make for a good aerobatic plane, then yes, but not full hovering & vertical climbing 3D. Try to keep overall weight in the 900~1000g range for full 3D... hard to do with smaller glow planes!
As with most abc engines you can run 15% oil and if you wish 0% nitro but you need to take a shim out of the head , at present I am running 5% nitro just for consistancey and ease of needle setting. Works well.. Remember if the F2A boys can do 190mph on no nitro we can go a lot slower
Sir I like you thinking. When I started in this I use to mix all my own fuel. All the advice above is good. Some a bit hard. Just make sure you measure carefully. Do not mix to much at once. The fuel start to age as so as you mix it. Above all things have fun and try different things. Also let us know what results you have. Just remember do not run to hot or to lean. The oil is in the fuel MMM. I hope this helps
I'm flying over a month with homemade fuel, using methanol and 16% castor oil. Engine works very well, of course a bit of work but after the adjustments is only joy. My tip to whether or not using nitrous is: Use candle to A3 rich mixture to avoid burning.
hello, I have this motor with a normal tank and it can fly 10 to 15 minutes, and it need not be regulated because they're in the range allowed for flights, not only for flights which have public, as well as squares and etc. ..
can this engine really spin 11x5 propellor?
because i asked an expert and he told me that 11x5 is way to big for 46, and i shouldn't even try cus it will damage my motor, and the size i need is 10x6. but here it says it can spin this, so anyone tried it or know if it really can?
what problem are you having with LEO carb. i just put one in my model and had very little trouble getting it runing.it had to be very wet to start and i had to use ele. starter, something i do not like to do. once started at a rich setting, i then began to lean it out staying on the rich side. i ran it 3 times for about 5 to 8 min. cooling down down for a short between runs. i run it the first 2 with a 10 x7 zinger with is kind of a wide prop, then changed to a topflight 10 x6, wich is a narrowe
Hello guys and gals I want to purchase the HK advertised SE.5A scale WW1 Warbird and they recommend using this motor. Can anyone after looking at all the reviews a Propellor preferably in Wood to keep it in scale for this aircraft and is hand starting this engine fairly easy? I really wouldnt like to put a spinner onto it as not scale I dont think. Any good ideas out there before I make the final hit the Pay button please. I am ordering the hand pump and the standard size servos as recommended also. Many thanks. Armo
propeller: 10X6 10X7 or 11X6 after fine tuning you can easy start it manually but be careful with your hands because this engine kicks really good. suggestion: use gloves.
sugesttion 2: fix the prop till the end wen the engine starts to break with the prop in vertical.
on hard starting eng. i have,and it seems a little strange to some of my other flyers, that if you flip the prop backwards the eng. will crank quite easily. sometimes if it is to rich it willrun backwards but you can hit the front of the spiner with you hand and it will correct itself of die. i have did for years on 60 and 90 size eng. and you don't get your hit. allen
very good engine!
I'm building my first SPAD, a scale. A Cub of 1.9m wing span ..... I was going to buy a G60 Electric but finally ordered a .46 LEO !
I have already another One !
Seems to be a very good engine !
this is a ball bearing engine but for few bucks more i would get the ASP much better engine , the leo is a remake of the ROYAL engine from 20 years ago and they were not very well built, so to play it safe i would get the asp .52 much much better
The Leo engine is not and never has been a remake of a Royal engine.Royal was a trade mark name of a hobby distribution company originally in the US(Colarado).They had RC gear manufactured with their name and logo on it.Some engines came from the Leo plant and some engines such as the Royal .45,came from the Thunder Tiger plant.The Royal.45 was identical to the Magnum .45 produced by Thunder Tiger with exception to their logos.The parts were totally interchangeable.
about spinners,the size of the spinner is according to what the modeler wants. the center area of the prop has no pull. the largeness of the spinner does not have a lot to do with anything. you know when it's to big, it looks ****y on the model. if the nose of the modelis shaped you want the spinner to look right. the smallness is decided by the prop. as long as the spinner does not touch the prop on either side it is ok. if you need a smaller spinner you can trim a little off the spinner to cle
i have this engine but really hard to setup this engine. how many turn on high needle valve? and how many turn on mixture control valve?
fyi, im follow manual from the box but its totally different. im using 11x5 propeler. its can run if i open full mixture control, and 6-7 turn on high needle valve. but cant run smoothly on idle speed. please help and share your setup. thanks a lots
I have been running in my Leo 46 and cannot believe it run 1st time. Factory idle mixture. Wound out needle 2.5 turns, fuelled up and it started first time. I have run it 3 times now and have just had it up to full speed and turned the needle back 1 turn. ie, 1.5 turns out. The venturi is almost shut and not as wide as I would have thought. I think is an OS46FX copy so I used that engine manual. Good luck.
Buy one for test and after 1.5 lt it runs very regularly. I run the break in with a 10x4 prop with full throttle at maximum rich rate controlling rpm via needle. No leaks from front bearing, no loosen screws. As new seems to have bearing problem cause shaft turns not smooth. Will fit on my new home made fpv trainer with a 10x8 prop. For me extra quality for the price. Complete instruction in the box. Will buy another soon.
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Compre uno y me sorprendi lo bien que funciona, siempre utilice motores OS y nunca pude arrancarlos de primera en cambio este la primera vez que le di arranque qued andando. Excelente motor por su precio.