R/C Tech Forums - View Single Post - How to solder correctly (a not so brief lesson)
Old 01-13-2013 | 02:07 AM
  #344  
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marine6680
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Originally Posted by jayhawknavy02
1) ESC is rated at 210 Amps continuous current is 8 ga or 10 ga wire a better choice than 12 ga?

2) If 8 ga/10 ga wire is a better option, will 8 or 10 fit on the ESC posts?

3) I have a 2.4mm chisel tip, should I be using a 3.2mm chisel tip for this application due to the large posts instead?

4) Do I need to use flux on the brand new ESC/motor posts before I solder?
1) Use the largest wire that fits. Bigger is better when high amps are concerned.

2) I do not have that ESC, so I can not answer that. Sometimes if a wire gauge is too large, you can adjust the shape, maybe flatten the wire before tinning, then it will fit better.

3) When it comes to large wire and larger ESC posts, the bigger the tip the better. I would say try and find the largest tip they make for your iron.

4) Flux is always a help, especially for tinning fresh wire, posts, and connectors. New components have a thin layer of oxides that prevent solder from bonding properly. Old solder connections have a thin (or thick) layer of oxides. Flux removes that layer. That is the why flux exists, to remove impurities and allow better molecular adhesion of the solder to the base metal.
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