soldering help

[steveo]

ok i am soldering new connectors on my proboat 1500 motor with copper wire and its being difficult i am sure i dont have the correct solder for this application does anybody know what i should be using

[siberianhusky]

Did you unsolder the old connectors or cut them off?
The bare wire actually has a thin insulation on it, if you cut the connectors off you are trying to solder insulated wire.
Every tiny strand of magnet wire is insulated before it is wound into the thicker wire making up the motor winding.
In the old days it was lacquer that you could remove with acetone, now it's polyurethane thats impervious to most solvents.
This is what keeps the "bare wire" from shorting out inside the motor.
Who'd have thunk knowing how to wind guitar pickups would have paid off in terms of rc boats!
If you unsoldered them plain old 60/40 rosin core will suffice. I use a high quality solder that has a bit of silver in it, get it from specialty places, it's a high temp electronics solder.
Do not use acid core or flux not designed for electronics, things will corrode down the road from the acid you can't get cleaned out of the wire.
Short of scraping off every strand I have no idea how to remove the insulation, I'd be interested in knowing it if somebody has a way!
Some motors like castle have soft silicone wire soldered to the ends of the windings, this stuff you can solder, if the wires are stiff like a proboat motor they are part of the winding.

[detox]

Do not cut off old connectors. Simply unsolder then resolder on new ones.

I once made the mistake of cutting them off (could not resolder). I used a Dremel abrasive wheel to remove coating. After stripping wire I spread wires then abraded wire on flat surface. Then soldered

http://www3.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=511e

[steveo]

crap its the bare wire i often wondered why the motor didnt short what looked the windings were touching, i though it was magic, will high heat remove the insulation from the bare copper

[Gimp]

crap its the bare wire i often wondered why the motor didnt short what looked the windings were touching, i though it was magic, will high heat remove the insulation from the bare copper

I was able to do that on a PB 1500kV motor. I didn't have an issue doing it and didn't know until somebody told me later. I use a nice iron so high heat may be the ticket.

[worriedsick4u]

Try a lighter. Burn it off. How's your Pickle coming along?

[steveo]

i burned it off with small torch but still no luck i have 60/40 and 62/36/2 solder both will not stick

[detox]

I tried burning off...does not work. You will have to sand it off.

[detox]

Option 2: You screw that motor up. Throw the motor away and buy new one.

[Gimp]

What's your iron rated at?

[pyroM!KE]

ok i am soldering new connectors on my proboat 1500 motor with copper wire and its being difficult i am sure i dont have the correct solder for this application does anybody know what i should be using

Let me share a secret with you..

http://www.homedepot.com/buy/tools-hardware-power-tools-welding-welding-machines-cutting/bernzomatic-butane-micro-torch-kit-161409.html

I can solder 8mm bullets in like 5 seconds..Dont tell anyone..

[steveo]

i have a butane solder iron with changeable heads torch or iron its plenty of heat

[steveo]

there must be another solder compound for copper conductors like this

[pyroM!KE]

One other thing I have found is dont use too much heat..I have ruined connectors that I make getting them too hot..You dont want to burn off all the flux..If theres not any flux in there the solder just will not stick or cannot be worked with..

[steveo]

Do not cut off old connectors. Simply unsolder then resolder on new ones.

I once made the mistake of cutting them off (could not resolder). I used a Dremel abrasive wheel to remove coating. After stripping wire I spread wires then abraded wire on flat surface. Then soldered
http://www3.towerhobbies.com/cgi-bin...?FVSEARCH=511e

well i found those abrasive wheels gave it a shot and it worked soldered everything up last night , thanks detox