Fuel for Cox engines
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.
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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