I have built a p-51 mustang kit from house of balsa "electric". now i am going on to the next project which is a biplane from balsa usa. Can anyone give me tips on how to make the switch? Is it just another servo that connects to the throttle? All info will be greeatly appreciated. Thanks

Assuming you have also installed the fuel system, then yes, the throttle servo will normally plug into channel 3 on the reciever(where you would normally plug in your ESC). Your battery pack will plug into the female lead on your switch, and the male lead from the opposite side of the switch will plug into the battery port on your reciever. Your switch may have a male and female lead on one side and a male lead on the other, if it does, the male lead that is on the same side as the female lead is a charge plug for charging the battery. Welcome to nitro! there are pro's and cons,that's why I fly both. Hope you will enjoy it and hope I answered yourquestion!

Does this mean you already converted the P-51 from electric to glow?

If not, and your intent is to convert the other aircraft to glow, there are a few things you might also consider before doing so. The electrics were made lighter than their glow counterparts, meaning more fragile. They may may tend to be less able to deal with vibration than the electrics they were designed for.

Be careful with this conversion. I would do as the previous poster has recommended, but you may want to fuel-proof (which is NOT done with electrics because there is no liquid fuel consumed and the oil byproduct on the wings and everywhere else for that matter) and strengthend with epoxy in other places.

CGr.

Is the bipe designed to be glow powered? If so, the instructions will hopefully have a lot of detail on setting everything up. If not maybe consider downloading the manual for a kit intended to be glow powered. Something like a trainer will have a lot of detailed tips and instructions. You can download most of the kit manuals from Great Planes.

Like the others have said, it is basically just a matter of having a strong firewall, fuel proofing the area and plumbing the fuel system correctly. Some airplanes intended for electric only can be very light and fragile so be careful. If it is designed for either power source then you'll be OK without much stengthening.

<div style="background-color: rgb(255, 255, 255); padding-top: 5px; padding-right: 5px; padding-bottom: 5px; padding-left: 5px; margin-top: 0px; margin-right: 0px; margin-bottom: 0px; margin-left: 0px; font-family: Arial, Verdana, sans-serif; font-size: 12px; ">Hugger... thanks for all the info. It will help.
CG... I was not planning on converting the p-51. Im pretty happy with the way it turned out. Even though the landing didnt go as planned on the first flight.
ChuckW... The bi is designed for glow. I just ordered it online and didnt get it yet so im not sure if it comes with any instructions on the motor end of it.</div>Thanks again guys.

I worked at the airport for 31 years and burnt jet fuel always smelled like money in the bank.  I love the sound of glow/gas.  I have never tried electric and even tho most of my club members laugh at me for saying it.....I'll never even try it.  Good luck.  BTW, check out the engine forum.