What fuel is used in model helicopter engines?
The most common fuel for glow plug helicopter engines is a mixture of methanol, nitromethane and oil. Modern fuels tend to use a synthetic oil component, which produces cleaner burning. The ratio of each ingredient varies depending on the performance required and it is usually the nitromethane component that is adjusted. A common maximum mix would be 70% methanol. 15% oil and 15% nitro. The other nitro ratios commercially available are 5%, 10% and 30%.
