Nitro also has less energy per Liter than gas, but it is also very volitile, which means it burns more completely. Approximately 8.7 times more Nitro will burn in one piston stroke than gasoline. Then when you take into account nitromethane, the nitromethane component of glow fuel increases it's explosive nature and increases available oxygen in the fuel because nitromethane has an oxidizer. Alcohol (methanol) is the major combustable component by volume in glow fuel and has ~45% less energy per liter than gasoline, but is more volitile, so it can be more explosive than gas and more fuel can be injected because it has an air to fuel ratio ~55% lower than gas. Glow fuel is made up of Alcohol, Nitromethane and oil. So what is the difference between Gas and Glow? A 2 cycle engine is a 2 cycle engine, no matter what fuel it is running. If you have experience with glow engines, you are 50% there. You may be asking yourself why would I do it? What are the advantages and disadvantages? Who do I buy from? What manufacturer should I go with? What do I need to make it work right? If you are not asking yourself these questions, don't worry, I will give you lots of info that will bring up more questions than these. You may have heard about them but are not sure where to start. I have put this thread together to help anyone trying to get into gas powered planes.
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