Spring Maintenance - RCCanada - Canada Radio Controlled Hobby Forum
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Old 04-27-2016, 03:12 PM   #1
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Spring Maintenance

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That was annoying!

Spring is THINKING about arriving in Southern Ontario and I have been busy getting my fleet of planes ready.

This entails charging up the batteries in… EVERYTHING!

Of course I had two batteries fail… One of the problems was in my recently rebuilt CAP 21.

OK Sh!t Happens. Off comes the Spinner, Prop and Cowl. I can now access the Receiver battery that did not charge.

Hmmmm – it was new last June… (I label my batteries) I pull the battery out of the Engine box and cycle it out of the Cap… it is fine!

OK I put it back in the plane and attach it directly to the Switch.

It cycles perfectly!

The only thing left is the 12” of extension cable from the switch to the wire!

Over the winter it MUST have either become disconnected from the battery (not likely).


The cable developed some corrosion in one of the connectors! Just enough to prevent the power from getting through.

A friend of mine also suggested that it could be case of ‘Black Wire’ syndrome! Which is a form of corrosion and is caused by allowing the battery to run down too much…

The lessons here today?
1. Be sure to check out your planes at the beginning of the season.
2. Over the winter – charge your batteries once a month to prevent ‘Black Wire’ Syndrome, or general deterioration of your batteries.

I Still have to pull the second battery out of the second plane – I wonder what I’ll find there…??
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Old 04-27-2016, 09:08 PM   #2
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I am: Max P.
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Re: Spring Maintenance

Black Wire Disease. Its common.

You should always remove a battery from the model if you plan on storing it for long periods.

Especially more so for Lipo and LiFe airborne packs. I took all mine out in the fall and put them in storage mode.
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