Model airplanes, cars and helicopters that run two stroke engines typically run a mix of methanol, nitro (15-30%), and caster oil (10-20%). This fuel runs around $18 a gallon and can be bought at any hobby shop.
I don't know the ratio of this fuel you would want to use to mix with. It does have its own castor oil so I would want to add it to ready to use premix, that way I don't end up with double oil for how much ever r/c fuel I put in.
This interests me bacuase, methanol has a cooling effect, and nitro certainly would add a kick, even without increased compression. That and it's readily available (I got half of a quart left in the garage).
Does anyone have a calculator for this or know how to calculate final octane and relative AFR, when mixing these fuels
.
The fuel I have is
20% Nitro
12% castor oil
That leaves 68% for the methanol.
I am going to double check the content of this fuel
It might be just the thing to add to mix gas, a little for a hot pump gas build, quite a bit more for higher compression 100 octane engines.
I would appreciate any help or information needed to get this together.
My hope is that the right methanol/nitro mix will be close to pump gas as far as AFR and jetting goes. It would be freaking awesome to be able to run a little , a lot or none of the meth/nitro mix without rejetting.
Compared to 93 octane gas I know it takes quite a bit more methanol to feed the same amount of air , not sure about the Nitro.
The next best thing would be figuring out how much methanol/nitro you could add to a tank 2.5 gal of fuel without having to rejet, might be able to run a half of a cup, or 1/4 of a cup on a bike that's slightly rich. Sure it will lean it out a little but at some point the cooling effect of the methanol should be enough to allow it to run lean and mean.
Any input will be appreciated, I am going to look for answers as well.
I am going to try to find out what AFR is in that range we like to run (one click over max power), and what afr is considered safely lean ( a click or 2 below peak power). Then I need to know the same numbers for methanol. That should be enough to get pretty close to the right amount of the M/N mix, to make more power, while running at the same or lower temps. I don't have a egt guage or anything else, so I guess I could just start small and add the good stuff a little at a time till a plug chop started showing a little lean then use a couple ounces less per tank next time. In the mean time topping the tank off with regular mix gas should make things good for the test tank.
On second thought with the add a little at a time method you really wouldn't need to know the numbers only how much gas and how much M/N worked.
I don't know the ratio of this fuel you would want to use to mix with. It does have its own castor oil so I would want to add it to ready to use premix, that way I don't end up with double oil for how much ever r/c fuel I put in.
This interests me bacuase, methanol has a cooling effect, and nitro certainly would add a kick, even without increased compression. That and it's readily available (I got half of a quart left in the garage).
Does anyone have a calculator for this or know how to calculate final octane and relative AFR, when mixing these fuels
.
The fuel I have is
20% Nitro
12% castor oil
That leaves 68% for the methanol.
I am going to double check the content of this fuel
It might be just the thing to add to mix gas, a little for a hot pump gas build, quite a bit more for higher compression 100 octane engines.
I would appreciate any help or information needed to get this together.
My hope is that the right methanol/nitro mix will be close to pump gas as far as AFR and jetting goes. It would be freaking awesome to be able to run a little , a lot or none of the meth/nitro mix without rejetting.
Compared to 93 octane gas I know it takes quite a bit more methanol to feed the same amount of air , not sure about the Nitro.
The next best thing would be figuring out how much methanol/nitro you could add to a tank 2.5 gal of fuel without having to rejet, might be able to run a half of a cup, or 1/4 of a cup on a bike that's slightly rich. Sure it will lean it out a little but at some point the cooling effect of the methanol should be enough to allow it to run lean and mean.
Any input will be appreciated, I am going to look for answers as well.
I am going to try to find out what AFR is in that range we like to run (one click over max power), and what afr is considered safely lean ( a click or 2 below peak power). Then I need to know the same numbers for methanol. That should be enough to get pretty close to the right amount of the M/N mix, to make more power, while running at the same or lower temps. I don't have a egt guage or anything else, so I guess I could just start small and add the good stuff a little at a time till a plug chop started showing a little lean then use a couple ounces less per tank next time. In the mean time topping the tank off with regular mix gas should make things good for the test tank.
On second thought with the add a little at a time method you really wouldn't need to know the numbers only how much gas and how much M/N worked.