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Cox Engine of The Month
020 glow head cleaning?
Page 1 of 1
020 glow head cleaning?
I have a 020 that runs fine with glow power but stops when power is removed. Is there any way to clean or refurbish this? Don
dontrinko- Moderate Poster
- Posts : 29
Join date : 2015-05-15
Re: 020 glow head cleaning?
take the head off and go in a dark room and connect the power to it if it glows brightly its good of it dose not glow then trough it away and buy a new one
cox24711- Platinum Member
- Posts : 722
Join date : 2014-01-18
Age : 21
Location : Noosa Queensland Australia
Re: 020 glow head cleaning?
or drill and tap it and fit i regular glow plug straight in
cox24711- Platinum Member
- Posts : 722
Join date : 2014-01-18
Age : 21
Location : Noosa Queensland Australia
Re: 020 glow head cleaning?
Your plug has probably lost the platinum coating of the filament.
Here's a clip I copied from http://www.fubarhill.com/GLOW.htm
------------------8<----------------------------------------------------------
Once the cycle has started, the power source can be disconnected, as with the heat generated at combustion the CATALYTIC Reaction generated between the methanol and platinum in the plug coils becomes sufficient to keep the process going. The catalytic reaction is a reaction whereby platinum will glow in the presence of methyl alcohol vapour. This will happen without any external power source being applied.
------------------>8-----------------------------------------------------------
Not sure about the actual science behind the phenomenom, what reacts with what and so on, or whether the explanation above is 100% correct. But methanol and platinum are both needed and it seems that you have a worn out plug. Fortunately these are still available PeeWee head is a bit "wee" for a standard plug conversion, but I suppose it could be done too.
Here's a clip I copied from http://www.fubarhill.com/GLOW.htm
------------------8<----------------------------------------------------------
Once the cycle has started, the power source can be disconnected, as with the heat generated at combustion the CATALYTIC Reaction generated between the methanol and platinum in the plug coils becomes sufficient to keep the process going. The catalytic reaction is a reaction whereby platinum will glow in the presence of methyl alcohol vapour. This will happen without any external power source being applied.
------------------>8-----------------------------------------------------------
Not sure about the actual science behind the phenomenom, what reacts with what and so on, or whether the explanation above is 100% correct. But methanol and platinum are both needed and it seems that you have a worn out plug. Fortunately these are still available PeeWee head is a bit "wee" for a standard plug conversion, but I suppose it could be done too.
KariFS- Diamond Member
- Posts : 2032
Join date : 2014-10-10
Age : 52
Re: 020 glow head cleaning?
While I feel the glow plug is certainly shot, what % nitro are you using? A plug that's on it's way out using low nitro in these engines can cool off immediately and shut the engine down. The smaller ones can run very well and be less finicky on higher nitro 35%-45% . This certainly keeps the fire lit. Bob Matte makes a Nelson drop in style plug for the TD .020. http://www.flyfreeflight.com/Site/Home.html Ken
Ken Cook- Top Poster
- Posts : 5590
Join date : 2012-03-27
Location : pennsylvania
Re: 020 glow head cleaning?
This was with 10% nitro, I do have 33% nitro, i'll give it a try. Thanks; Don
dontrinko- Moderate Poster
- Posts : 29
Join date : 2015-05-15
Re: 020 glow head cleaning?
Tried 33% nitro, Runs a few seconds after glow power removed. guess I need a new glow head. Don
dontrinko- Moderate Poster
- Posts : 29
Join date : 2015-05-15
Re: 020 glow head cleaning?
What size prop are you using??
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: 020 glow head cleaning?
Look at the filliment, if it's dull it's probably shot. The coil should have a shiny chrome look to it.
Re: 020 glow head cleaning?
could have a break as another possibility sometimes the coil needs to be recenterd, you don't want it to be leaning up against the inner wall it will reduce its ability to reach full glow.
1/2A Nut- Top Poster
- Posts : 3464
Join date : 2013-10-20
Age : 61
Location : Brad in Texas
Re: 020 glow head cleaning?
I would recommend trying a new glowplug. They wear out the platinum plating but the base metal of the glow element (nichrome?) still glows with power applied. That may be enough to get the last little bit of plating to fire the engine but there is not enough plating to keep the fire lit because the plating is what keeps the base metal hot when the power is disconnected.
Unplated,
Forgetful John
Unplated,
Forgetful John
Forgetful John- Silver Member
- Posts : 60
Join date : 2015-03-03
Age : 70
Location : Sparkling Houston, TX
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