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Old Jun 23, 2009, 02:57 PM
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nioa's Avatar
Phoenix, AZ
Joined Jan 2008
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Model Aviation Article "How to avoid those nasty sparks"; Is OK with CC?

The Battery Clinic (Red Scholefield) in July 2009 Model Aviation Magazine (page 97) features an interesting method of spark prevention. It consists of an "auxiliary connector with a resistor on the positive circuit that is connected before the "main" power connector.

I have ALOT of Castle Creation ESC's and I would like to know if this method of spark suppression would work. It sounds very simple and reasonable. Can any CC engineer confirm that it would not void the ESC warranty?

Article Reference:
Ampeer Online, February 2009
(Scroll down to "How to prevent sparking")

Thanks,

Nick
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Old Jun 23, 2009, 04:01 PM
Gravity is a harsh mistress.
Tim Wolff's Avatar
United States, MI, Temperance
Joined Sep 2002
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http://www.castlecreations.com/suppo...oenix.html#hv3

3. When I plug in my high voltage battery pack (4s-12s lipo, 12-20 NiMH) into my Phoenix HV or Phoenix-125, etc. controller there is a large spark. Why?


The spark is your friend. If ever you plug your pack into your controller and you donít see the spark, contact tech support at support@castlecreations.com or (913) 390-6939 and send the controller in for repair. Your capacitors will need to be changed. NEVER fly if you do not see the spark, especially with high voltage applications! The higher the voltage, the bigger the spark should be. Remember, the spark is your friend!!!
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Old Jun 23, 2009, 04:10 PM
Registered User
Austria, Stmk., Graz
Joined Feb 2008
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Hi!
A small resistor really helps to pre-load, as long as you don't have a UBec on your main battery! If there's one you would have to switch it to off. I'm using a Anti-Spark circuit... this should be part of every HV Esc...
By the this was discussed before. A CC guy advised to take a small resistor. Just use the search function and you should find it...
Sparks aren't a good friend of your connector. You would have to exchange them soon...
[Edit] Here's the link: http://www.rcgroups.com/forums/showthread.php?t=759403
-klaus
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Old Jun 23, 2009, 04:53 PM
A man with too many toys
United States
Joined Feb 2001
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Quote:
Originally Posted by nioa
The Battery Clinic (Red Scholefield) in July 2009 Model Aviation Magazine (page 97) features an interesting method of spark prevention. It consists of an "auxiliary connector with a resistor on the positive circuit that is connected before the "main" power connector.

I have ALOT of Castle Creation ESC's and I would like to know if this method of spark suppression would work. It sounds very simple and reasonable. Can any CC engineer confirm that it would not void the ESC warranty?

Article Reference:
Ampeer Online, February 2009
(Scroll down to "How to prevent sparking")

Thanks,

Nick
I saw that. They really did it the hard way. I didnít think much of that article. Also the resistor values were too high.
http://www.rcgroups.com/forums/showthread.php?p=8389269










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Old Jun 24, 2009, 09:55 AM
A man with too many toys
United States
Joined Feb 2001
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I agree about the high ohm resistors. They can easily blow an ESC. You need something in the 1 to 5 ohm range. CC recommends 1 ohm. I have used 4 ohm on numerous ESCís for quire a few years and have never blown an ESC.

Bad information about using higher ohm resistors is not a good thing. You should always check with the manufacturer to make sure you wonít void the warranty.


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Old Jun 24, 2009, 01:56 PM
Castle's Chaos Corner
Bernie Wolfard's Avatar
Olathe, KS (next to the Castle)
Joined Jun 2001
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I said 1 ohm! When you plug the ESC in it beeps the motor. This takes several amps. Running the micro processor circuit behind a resistor with a load on it can damage the processor board. Plugs are cheap, ESCS are not. Use anything over 1 ohm at your own risk, it will not be covered under warranty.

We chased an anti spark circuit for over a year, but the HV ESCs did not become reliable until we took it off.

Bernie
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Old Jun 24, 2009, 02:56 PM
More Motors, More Fun... :-)
nioa's Avatar
Phoenix, AZ
Joined Jan 2008
703 Posts
Quote:
Originally Posted by Bernie Wolfard

........Plugs are cheap, ESCS are not. Use anything over 1 ohm at your own risk, it will not be covered under warranty.

We chased an anti spark circuit for over a year, but the HV ESCs did not become reliable until we took it off.

Bernie
Thank you Bernie. This is EXACTLY the information I wanted to know. While the pop of a spark can be a bit unsettling, I do not want to do anything to put my plane's ESC at risk.

I think I'm just gonna let it pop and replace connectors as required. I think the CC engineers know what their doing.

Thanks to all who replied as well!

Nick
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Old Jun 24, 2009, 03:00 PM
More Motors, More Fun... :-)
nioa's Avatar
Phoenix, AZ
Joined Jan 2008
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Very Clever

Quote:
Originally Posted by RC Man
I saw that. They really did it the hard way. I didnít think much of that article. Also the resistor values were too high.
http://www.rcgroups.com/forums/showthread.php?p=8389269










If someone was to want to use the spark suppressor, this would be the way to do it. Very Clever RC Man!
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Old Jun 25, 2009, 08:19 AM
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Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
Even if you don't use 4mm plugs on your batteries, you can put one of these inline between the male deans and the ESC. Plug the battery into the regular Deans, then complete the circuit as shown above.

This a very clean solution, in my opinion..
..a
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Old Jun 25, 2009, 11:08 AM
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Olathe, KS (next to the Castle)
Joined Jun 2001
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Zen and the art of plugging in

If are afraid of and worry about the spark you will flinch a little when you push your plugs together. This results in a slight pull back or hesitation when the spark occurs. During this time you are arc welding the tips of your plug. Get used to taking a big breath then pushing your plugs together aggressively. Don't allow yourself to flinch or jump. Done this way you get a pop but because the plug goes together quickly, you minimize the arc welding. Practice this and it will quickly become second nature and your plugs will last a long time.

"Breath deep and clear your mind. Find your center and let go of all your fears. Now PLUG grasshopper, PLUG!"

Bernie
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Old Jun 25, 2009, 01:46 PM
Glenn
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United States, WI, Oconto Falls
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Anyone heard of ''sods law'' though? When pushing deans together with no power they'll go straight in!
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Old Jun 25, 2009, 02:03 PM
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I think that if you're afraid of the spark, you should find another hobby.
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Old Jun 25, 2009, 02:54 PM
I'll Fly Anything...
Michigan
Joined Apr 2006
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Amen to sleebus.jones (no relation). Assuming a deans connector, have them positioned the correct way beforehand; keeping the spring side and the solid side oriented right and just go.

It's not the voltage that gets you, it's the amps. Or so my English grandfather used to say - while working on 220V single phase...
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Old Jun 25, 2009, 04:55 PM
Glenn
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United States, WI, Oconto Falls
Joined Jan 2004
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Quote:
Originally Posted by sleebus.jones
I think that if you're afraid of the spark, you should find another hobby.
I did have one time an ark while plugging in the deans and it blew one of the deans pins all over the place with red hot metal! Needless to say it worried me so I took it upon myself to do my own resistor mod to eliminate the spark.
wellington
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