ORIGINAL: iskandar taib
Heh.. you guys haven't even gotten into the ''percent by weight vs. percent by volume'' argument yet. SIG measures by volume, a lot of the RC fuel suppliers measure by weight. When you consider that the specific gravity of nitromethane is 1.14 and the s.g. of methanol is 0.8, it really DOES make a lot of difference. 15% nitro Byron or Cool Power fuel would be the equivalent of, say, 11% SIG fuel. When they say 18% oil it'd only be 14% by volume.
Iskandar
Not sure what oil or mix you refer to, but the weight that I have found on Castor-oil is 0,956g/ml and that would give:
On 67%Me, 18%Oil, 15%Nitro in weight, would be by volume: 72,6%Me, 16,1%Oil and 11,3%Nitro.
On 72%Me, 18%Oil in weight, would be by volume: 84,6%Me, 15,4%Oil.
But then again, not all fuels are even labeled in more then Nitro %...
