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Old Aug 06, 2006, 08:25 PM
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Joined Oct 2004
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Fuel for Cox engines

Greetings!

I got out my gas (Cox .049, & .020 reed valve and the .020 tee dee) free flight airplanes after not flying them for a while. (see attachments). They started great a while back now I've had a bit of trouble getting them started. Yes, they still run, but I was wondering if the nitro fuel can go bad? Does nitro evaporate? What's the shelf life? My battery shows 1.5 volts (Cox black plastic battery holder-2 D batteries) and the glow plugs light up OK. Is there a better battery system? I've been using 20% nitro but this disscussion says 35% nitro.

Thanks!

Tom

P.S. The photos have a Deisel DC Dart installed. I had trouble running it for now so I'm using a Cox .020 Tee Dee until the deisel is learned.
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Old Aug 23, 2006, 05:30 PM
OCD: Old, Cranky and Disgusted
challenger_i's Avatar
United States, TX, Sweetwater
Joined Mar 2005
1,616 Posts
WOW! Old post and no answers!

Nitro fuel will attract water like a sponge. I like replacing any fuel that has been opened about every 3 to 4 months, sooner if the humidity has been up.
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Old Aug 24, 2006, 03:57 PM
feel no remorse
youth must fly's Avatar
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Joined Jun 2004
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wow the model looks sweet nice gentle flyer
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