First off is it ok to run 2stroke fuel in a four stroke engine? also how do you choose the percentage of nitro needed in different engines.
I've been running 10% in my 2 strokes, but my spad could use some more power so i might change it along with my other 2 strokes to 15%. will this give it more power. Lastly what exactly is nitro and how does it work?

Thanks, Dave Trimmer

hers a pretty good reading on nitro [link=http://www.rc-trucks.org/rc-nitro-fuel.htm]Nitro[/link] Hope this helps.

ORIGINAL: bruce88123


A "nitro-burning" engine and a "top fuel" engine are the same thing -- engines designed to burn nitromethane rather than gasoline.

if by Nitro-burning you mean a glow engine like used in the RC hobby, they are nothing alike. top fuel uses a valved system with spark ignition, and a wet sump system for lubrication.

...........Nitromethane is a little like gasoline that has been pre-mixed with nitrous oxide. The fuel comes with its own oxygen atoms to help it burn.

you don't mix nitrous with gas, it's part of the intake air to the system, injected as a liquid into the manifold as it expands to a gas it cools the air making it more dense and allows for a higher air/fuel mixture and significantly increases the burn rate, nitro retards the burn rate and provides O2 as it burns. nitrous is non flammable, nitro is very flammable

In other words, it promotes cumbustion

that they both do but in very different ways.

kc