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I'll tell Ya, I sell a fuel from Penn. called S&W. You'll see it
advertized in Flying Models. When I order the only item that changes
the price per gallon is "Nitro" content. 100% castor,100% synthetic,
15-18-20-22% oil. Whatever ya want. It's all the same price. 10%
Nitro,12.5% nitro,20% nitro. They all cost different prices. The
NITRO is the costly item in our fuel.
Tom
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| On the subject of fuel mixture's I would like to raise the question of
hazardous substances that are used by various groups in fuel. While I don't like
to point fingers at any group it appears to be the biggest risk takers are the
Old Timer movement. They are experimenting with some "exotic" mixture's for
economy not performance.
I recently read an article where the author was dismayed that people were
still asking where they get such substances as nitro benzene, zylene, and
paraledhyde to name a few. The hazards nature of these substances have been
well documented. The risk is not only to the used but also any bystander or
helper that inhales the fumes. The same author also reported he had recently
had surgery for cancer and the surgeon while he could not guarantee the cause to
be contact with these "exotic" substances in his early modelling career
indicated it was a probable cause.
In Australia Tetra-nitro-methane, nitro benzene and hydrazine are banned. I am
interested to see comment on:-
1. What substances are banned in other countries.
2. What other substances should be avoided in fuel.
It is possible for some quite safe substances in there raw unburnt/mixed state
to become toxic or dangerous as a fuel. Any person in these notes with
chemists knowledge may like to explain (simply) what is happening with things
such as trioxides etc.
John
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