RC Airplane Gas Engine Set-up Overview RC-AIR: How To

A basic overview setting up a gas engine on a Remote Control Airplane. Discussing components of the set-up, Batteries, Receiver, Ignition Switch (IBEC), Fuel Tank, Fuel Lines, Ignition and the Engine.

[@resedent2009]

Rcexl have been making ignitions with inputs of 4-8v since about 2014, so even without a OPTO kill switch, you can still run it directly on a 7.4v 2S LiPo. Useful for those with little knowledge of these systems to know

[@Cosme422]

Thanks for the info! I’m building my first plane. sbach 65” w/DLE-20 and I think I’m going to make a servo mount out of rubber for my throttle servo now that I saw this info. Thanks for the videos!

[@RC-Air]

no need to make the mount out of rubber, simply add the rubber grommets to the servo and that will suppress the vibration. Use a plastic arm as that helps too.

[@josezurita9470]

Great video and tutorial.. Thanks a lot !!

[@RC-Air]

Thanks for the feedback! Look for several more videos to be coming out over the next week.

[@leordeansg]

thanks man

[@RC-Air]

Anytime! Happy to help.

[@icin4d]

For a tank that vents from the top, such as the one shown here, as opposed to a DuBro tank, why is it necessary to loop extra vent fuel line around the top of the tank?

[@RC-Air]

It prevent the tank from siphoning out the gas when it is inverted and in knife edge.

[@WayneCook306]

Metal push rod to the engine will not cause feedback that is incorrect these systems these days will not pick up interference that way, in fact, do not pick up interference at all from anywhere so it is safe to do that. And also there are no issues with plastic geared servos to throttle.

[@RC-Air]

Thank you for the feedback. I date back well into the 72mhz days with my knowledge. A lot changed with 2.4 and as stated in the video I wasn’t sure. I appreciate the additional info.

[@WayneCook306]

@@RC-Air No Worries. thank you.

[@hkagiri5799]

hi i just got a 50cc gas trainer...I couldn't find where to feed my fuel which was weird .Secondly the fuel tank is placed in a hidden compartment which cannot be opened and I wanted to do upgrades on the tank

[@hkagiri5799]

@@RC-Air Will definately do that ...thanks

[@RC-Air]

Did you ever get this plane in the air?

[@porboysdream]

What size lipo should I use with this set up and a dle 20cc

[@RC-Air]

That’s tough to say. I’ve not ever flown with a 20cc. The ignition won’t use a ton of juice, so do what you can to keep it light. Nothing wrong with changing batteries out. No need to use a big one for more flights. In that size plane, ounces matter a lot! Keep it as light as you can and you’ll have a much better flying experience.

[@franzfranz131]

Great presentation Questions I tried to run my engine to break it with 32:1 gas/oil ratio 1. Does the fuel from the tank tubes needs to reach The engine ( by the carburetor) to get the engine started moving propellers counterclockwise wise and having the ignition connection to the battery I didn’t get it started may be because the fuel did not get to the engine? Does the gas move inside the tube line towards the engine when we pushed propellers counterclockwise???????

[@RC-Air]

Yes, there is a small diaphragm in the muffler that draws the fuel from the tank into the fuel line then into the carburetor when the propeller is rotated counter clockwise. Sometimes, If the diaphragm is dry is will not pull fuel. It may help to put a couple of drops of fuel directly into the carburetor using a straw.

[@dynodom4677]

What is eibäck ?

[@PhilipAlonzo]

Yes i dont use the opto kill switch either

[@RC-Air]

I really like the TechAero IBEC’s they have been fantastic for me.

[@iman80skid91]

But the system that you like means your battery which is only one battery runs the spark ignition and the servos is that correct..

[@RC-Air]

That is correct’ish. In smaller gas planes I generally run a single battery. In larger gassers I run two batteries into a powersafe receiver. Using an IBEC you are controlling and Powering the ignition with the same batter.

[@rickknowles9620]

Both my gas engine ignition boxes say 6 volt to 8.4 or 14volt. It doesn't look like this video on the ignition is relevant.

[@RC-Air]

Hey Rick I think all of the new ignitions are now rated up to 8.4v, which is fantastic. That said if you happened to pick up a used plane or engine, there is still a high likelihood that you may have one of the older ignitions, it's always good to check when you're setting your system up.

[@rickknowles9620]

@@RC-Air thanks, I'm learning a lot.

[@RC-Air]

There is a lot to learn for sure! You’re welcome to reach out anytime with questions. I’m happy to help.

[@BenandUTube2012]

Can you use a presure line from exaust pipe to tank with no vent like witth nitro ??

[@RC-Air]

There isn't a need to do that, the carburetor pulls the fuel using a diaphragm and ambient pressure. Pressurizing the tank isn't necessary and, while I cannot say with certainty, might even be detrimental to the operation of the carburetor.

[@micksmith7587]

If you pressurise from the exhaust it will catch fire 🔥! Under no circumstances use exhaust pressure!! If you must pressurise it you must use a purpose built pump.

[@munawarshah8540]

Sir which channel is control the throttle

[@RC-Air]

I’m in mode 2. So the left stick. Channel 1.

[@anthonywilliamson2080]

You forgot you need to supply oxygen to the carbutator 😁

[@RC-Air]

That is done through the cutting of the cowl/fuselage. There are some occasions where an ambient pressure line is also ran to the carburetor, depending on the design.

[@lungomaburfpv1425]

Speak only

[@tacx1]

Wow? After all that, I’m just sticking with glow !!!

[@RC-Air]

Fair enough. I flew with glow for many years. Setting up a gas system takes a minute, yet long term the cost savings are well worth the effort. Happy landings.