Cheap source of methyl hydrate?? - Page 6 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 03-22-2006, 05:49 PM   #51
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Drug store

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Yes, the drug store will carry items for use in glow fuel but only at premium prices. Medical grade castor can be purchased for ~ 3$ / 100ml. This is expensive, at least, i think it is.
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Old 03-22-2006, 07:02 PM   #52
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There are a few things to consider when you guys mix your own fuel. One is that when you buy nitromethane from your local speed shop , it usually has a percentage of methanol in it as a stabilizer. You should find out what % it is to keep your fuel mix in balance. Nitro methane also boosts power because when it is burned , it gives off oxygen as a byproduct thus boosting the "burn". There are few substitutes, other than nitro propane. Also Castor oil is a superior lubricant to synthetics. When this oil is heated to a high temperature, it actually "picks" up oxygen molecules. Once the oil does this the viscosity actually goes up and protects the moving parts better. In a nutshell, when they started manufacturing modern glow fuel in the 1970's, these products were found to all work hand in hand making model glow fuel the perfect product. It is a shame that Apollo Custom is no longer manufactured.
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Old 03-22-2006, 07:23 PM   #53
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What is a 4 litre jug of pure nitro worth?
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Old 03-23-2006, 03:54 PM   #54
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I see no cost saving or benefits in producing your own fuel if you require nitro, unless geographically it is hard to attain, which is my case. All the same, cost effective, perfomance effective fuel can be made if you are willing to burn 0% nitro. In any case, the battle between castor and synthetics has raged on for two decades and there seems no clear answer, except that one person prefers the qualities of one as in contrast to the other. That being said, synthetic racing fuels that are formulated for use in alcohol/methanol are acceptable, as is castor, and what a person uses will largely depend on what sources they have avaliable, keeping in mind that they are formulating their own fuel and the onus will be on themselves to protect the inner workings of their engine.

What kersplat says has merit, castor has excellent filming and visous lubricating qualities, and that is why a portion of racers still use it today, but synthetic also has it's own redeeming qualities. Of note in particular, is that synthetic has been specifically designed to work in ringed engines, and has many detergents and additives designed to keep rings from gumming, varnish from building,etc., but is just not as effective as far as I can tell, at removing heat from the cylinder head. So what a person chooses, they will do at their own risk.

Sooo... Still waiting to hear about a donor, (sacrificial lamb) for us to do some testing. Lets see what really is the difference really is. Why not post it for all?
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Old 07-19-2006, 09:14 AM   #55
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As an add on to this most interesting thread, I am attempting to attach a small Excel spreadsheet I created to assist in calculating amounts of the various substances that would go into formulating simple glow fuel.

As mentioned in an earlier post (Page 2, I think) I have been given a 20 Liter drum of Hi purity methanol and will be using it to mix up some fuel. Therefore, I felt the need to calculate the amount of oil etc needed and am too lazy to pick up a pencil and use my brain when I can let my computer do the math.

Since we buy our stuff from the LHS in U.S. gallon jugs, that's the basis of measurement I used.
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File Type: xls glow_fuel_mix_calculator_592.xls (15.0 KB, 104 views)
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