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Old 04-25-2011, 07:29 AM   #11
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Re: battery question

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I strongly believe somewhere in the previous posts there is the solution to your dilema, (your own admission the battery could have moved makes me wonder how well it was packed in there). If not, there could be a couple of other suspects.

You did not mention the age of the model or gear. If the model had a battery plugged into it for a few years prior to even this new pack or if the switch was used and a few years old you can get into what is called "Black Wire Disease". Externally the conductors look fine, but if you peel back the insulation the current carrying wire element itself will be black and/or corroded. In the most extreme cases the conductor will be nothing but powder, (my first car was a Vauxhall that was notorious for this one). It will not be limited to the battery side of the switch since many only break the positive half of the pair and the negative will be common all the way through. Depending on the environment regular long term corrosion or degradation of the contacts within the switch will affect the connection

My friend has bought a few models online over the last few years.....and lost some of them due to this before he finally believed me and checked it. What was a bit difficult to convey was the possibility the switch would show voltage at both ends, but the problems occur in their current carrying capability. It was worth the expense to invest in at least a new switch assy.

Another possibility is a weak connection within a plug pair. I have seen huge differences in fit and connection quality between different makes of the universal "J" type gear. Your new battery may not have had a good contact with the opposite plug. One way to test is to pull on each conductor, the opposite matching conductor should at least wiggle with it. There is enough room in most plugs to test this. Pulling the connectors apart should also take some effort. If they literally fall apart and require some form of connector safety system or taping then that slop can cause wear from vibes and eventual failure.
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Old 04-26-2011, 12:25 AM   #12
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Re: battery question

i bought a u can do 3d too kit but this time i've got two 2700 6v packs same servos as i was running in the twist
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