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Old 31-12-2016
Brettnai Brettnai is offline
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Default Removing old wires

I'm having a bit of trouble removing some old wires from an ESC. The old solder just won't melt.

I'm wondering if the soldering iron isn't powerful enough. Not something I've had to do before.

Any suggestions?
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  #2  
Old 31-12-2016
Wig Wig is offline
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Do you know how many watts the iron is? You want one of at least 60 watts.

As a rule of thumb do not apply heat to a part for longer than 5 seconds, if you do you run a chance of damaging the internals.
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Old 31-12-2016
Brettnai Brettnai is offline
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Pretty sure it is a 60w but it just won't budge!
All I can do is snip the wire and solder to what's already there... kinda defeats the object of cleaning it up!

Bit stuck!
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Old 31-12-2016
DynaMight DynaMight is offline
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Sometimes it helps to apply a little new solder to the old joint to allow the heat to transfer to the old solder.

60w should be more than good enough assuming the tip isnt completely ruined.
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Old 31-12-2016
Brettnai Brettnai is offline
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Quote:
Originally Posted by DynaMight View Post
Sometimes it helps to apply a little new solder to the old joint to allow the heat to transfer to the old solder.

60w should be more than good enough assuming the tip isnt completely ruined.
It's a brand new iron so should be fine.
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Old 31-12-2016
bigalbi bigalbi is offline
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Get some good quality electronics flux and apply it to the joints before you tin the iron with fresh solder. They should then release. 60 watt should be enough.
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Old 31-12-2016
Allan1875 Allan1875 is offline
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Quote:
Originally Posted by Wig View Post
Do you know how many watts the iron is? You want one of at least 60 watts.

As a rule of thumb do not apply heat to a part for longer than 5 seconds, if you do you run a chance of damaging the internals.
Not really true, I done all my ESC with a good 25w + flux up until I got a solder station.
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Old 31-12-2016
Brettnai Brettnai is offline
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Thanks for the replies.
Unfortunately, I've just accidentally snapped one of the connectors off along with a section of the circuit board rendering the ESC useless.

Not having a good day. What time can we start drinking?!
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  #9  
Old 31-12-2016
Wig Wig is offline
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Quote. Not really true, I done all my ESC with a good 25w + flux up until I got a solder station.

Ok, fair point.
Personally I dont use flux. I use high quality silver solder. No need for flux.
Ideally when using flux the part should be rinsed with water to remove any acid left over. Obviously this is not an option with an ESC

Last edited by Wig; 31-12-2016 at 02:48 PM.
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Old 31-12-2016
Wig Wig is offline
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Quote:
Originally Posted by Brettnai View Post
Thanks for the replies.
Unfortunately, I've just accidentally snapped one of the connectors off along with a section of the circuit board rendering the ESC useless.

Not having a good day. What time can we start drinking?!
Unfortunate. I think you can start drinking about now!
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  #11  
Old 31-12-2016
mattr mattr is offline
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Quote:
Originally Posted by Brettnai View Post
Not having a good day. What time can we start drinking?!
start now. But then avoid eBay or any large Internet retailers.

Or you'll end up with a selection of ESCs arriving over the next week or so.
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  #12  
Old 31-12-2016
Brettnai Brettnai is offline
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Quote:
Originally Posted by mattr View Post
start now. But then avoid eBay or any large Internet retailers.

Or you'll end up with a selection of ESCs arriving over the next week or so.
Haha!
Exactly why got me into this mess in the first place!
Oh well, live and learn!
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Old 31-12-2016
mattr mattr is offline
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That's why I have about 400 quids worth of spare electrics......

Last edited by mattr; 31-12-2016 at 03:19 PM.
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  #14  
Old 31-12-2016
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reelman_fishing reelman_fishing is offline
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Quote:
Originally Posted by Brettnai View Post
I'm having a bit of trouble removing some old wires from an ESC. The old solder just won't melt.

I'm wondering if the soldering iron isn't powerful enough. Not something I've had to do before.

Any suggestions?
If its a new iron tin it first with a good quality 40/60 solder and not the lead free sh1t. Use the 40/60 solder + flux to do all your soldering, let iron heat up, put flux on part, solder on iron, iron with solder on part. happy soldering.
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  #15  
Old 31-12-2016
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Default wire removal

Quote:
Originally Posted by Brettnai View Post
I'm having a bit of trouble removing some old wires from an ESC. The old solder just won't melt.

I'm wondering if the soldering iron isn't powerful enough. Not something I've had to do before.

Any suggestions?

The best way to remove old wires without damaging the ESC by overheating is to cut the existing wires as close as you can to the connector on the ESC and remove the wire insulation, now there's minimum wire for the heat to travel up so the heat is into the short stub of wire and the ESC connection, then heat the joint and add a drop of fresh solder to get the process going. Don't forget to make sure the iron has been on for at least 4-5 minutes so its very hot.

This always works for me and i've done plenty of ESC's

Enjoy

Last edited by Zippy G; 31-12-2016 at 04:49 PM.
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Old 31-12-2016
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The main thing is a big tip, then you get More heat transfers to the job quicker
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Old 31-12-2016
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Have to agree with some of the OP's responses. Currently use a 25W iron, and flux paste from a plumbers. Works wonders and I can easily do any motor wires and Corally/Banana plug connectors with ease.

Decent solder and flux helps, as well as a clean tip. Occasionally I file mine down again, as they do get crud on, and a quick clean and re-tin works well.
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