Actually I remember some pylon racers running higher nitromethane percentages. But above 50% you have to add in some kind of a additive to allow the nitromethane to mix with the methanol and oil otherwise it settles out and doesn't mix well. The maximum is about 65% nitromethane in the glow fuel as you still need some methanol to allow the glow plug to work. of course the engines do not last very long from the extreme combustiveness of the fuel though. But in all out racing that is part of the game.


I checked up on what Dar Zeelon stated and yes at present it is cheaper to buy a ASP 1.08 fromHobby City and have it shipped in via the cheapest method than it is to buy the same engine from Hobby Parts with their free shipping at the moment. But it could change though. it is interesting how that came about. A year ago it was the other way around.
Now this is for shipping to the USA though. You also need patience as it can take from three to eight weeks depending on the mood of the customs agencies at the time.