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Old 11-10-2010, 03:44 PM
  #1
Shane18
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please help i cant start my cox engine. i have a good battery and a glow clip and the external tank. glow pug glows red but still won't start.


please help!!!
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Old 11-10-2010, 04:07 PM
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Boulder Dave
 
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Default RE: cox

You didn't say if it's a reed-valve engine or a TD/Medallion. If you
have an external tank, it's most likely a TD. Depending on whether
the engine isn't stock, it may need a pressurized (pen bladder or similar)
fuel tank. Assuming it's stock, make sure the tank centerline is
roughly vertically in line with the needle valve.

The plug should be glowing bright orange, not dull red. Red means you
either have a weak battery, or the wrong kind of battery.

If it's a TD, make sure you have one or two squish-band spacers
(they look like thin gaskets) under the glow-head.

Use 25% nitro fuel. Castor-synthetic oil mix is best for these guys.
Cox used to make a great fuel for them.

When you're about to spin the prop, squirt some raw
fuel on the fins above the exhaust port to prime it.

If your glow plug is properly glowing, it should fire on just
that prime, even with the needle closed. Once you verify
that, start with the needle 2 turns open (assuming a stock
needle).

Starting them is not that hard. Getting them to run strongly
throughout a fuel tank is the trick.

There are many Cox guides on the internet. Google.

- Dave
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Old 11-10-2010, 04:44 PM
  #3
controlliner
 
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Default RE: cox

This forum discusses reedies but it is good info http://www.rcuniverse.com/forum/m_3747940/tm.htm
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Old 11-10-2010, 06:56 PM
  #4
vauxhall
 
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Default RE: cox

Hi Shane18, if the engine runs for a couple of seconds when primed, then stops, it's likely the reed valve is gummed shut with dried castor oil. Remove the reed and clean it with some fuel. Pretty common problem, easy to fix.
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Old 11-10-2010, 08:04 PM
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Default RE: cox


Quote:
ORIGINAL: Shane18
please help i cant start my cox engine. i have a good battery and a glow clip and the external tank. glow pug glows red but still won't start.
You have already received excellent advice.

By start do you mean run off a prime or steady running? I would suggest you learn to run off a prime before filling the tank...sort of one step at a time.

George
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