Fuel
The highest performance is achieved with fuel of 30% or more nitro content. At least 20% oil (50/50 castor/synthetic) is recommended. Acceptable performance can be had without nitromethane, although the engine will be very sensitive to needle adjustments making it more difficult to operate. With high Nitromethane (nitro) fuel it may be necessary to lower the compression by installing up to six or more additional head gaskets.
When using Castor Oil it is advisable to clean the engine cylinder wall with a Scotch-Brite pad to remove castor oil varnish buildup that will occur, especially after lean running. This buildup of varnish will cause the engine to run inconsistently.
To avoid this problem, it is advised to use a Synthetic oil or synthetic and castor oil blend. Synthetic oil contains detergents that will keep the cylinder wall clean, however these small engines do rely on some castor oil buildup to maintain high compression at higher running temperatures.
Using clean fuel and keeping everything clean and free from dust and dirt particles is also very important for consistent running in an engine of such small size as these.
Cox Fuel Formula
| Fuel Name | Methanol | Nitro-methane | Castor Oil | Klotz Oil |
|---|---|---|---|---|
| Glow Power | 70% | 10% | 18% | 2% |
| Flight Power | 65% | 15% | 18% | 2% |
| Race Power | 50% | 30% | 18% | 2% |
Read more about this topic: Cox Model Engine
Famous quotes containing the word fuel:
“The particular source of frustration of women observing their own self-study and measuring their worth as women by the distance they kept from men necessitated that a distance be kept, and so what vindicated them also poured fuel on the furnace of their rage. One delight presumed another dissatisfaction, but their hatefulness confessed to their own lack of power to please. They hated men because they needed husbands, and they loathed the men they chased away for going.”
—Alexander Theroux (b. 1940)
“It is now many years that men have resorted to the forest for fuel and the materials of the arts: the New Englander and the New Hollander, the Parisian and the Celt, the farmer and Robin Hood, Goody Blake and Harry Gill; in most parts of the world, the prince and the peasant, the scholar and the savage, equally require still a few sticks from the forest to warm them and cook their food. Neither could I do without them.”
—Henry David Thoreau (1817–1862)
“Beware the/easy griefs, that fool and fuel nothing./It is too easy to cry “AFRIKA!”/and shock thy street,/and purse thy mouth,/and go home to thy “Gunsmoke,” to/thy “Gilligan’s Island” and the NFL.”
—Gwendolyn Brooks (b. 1917)