Soldering wires on turnigy motor.Help

[LuckyDuc]

I ran into the same problem with trimmed motor leads. I used a 280 watt iron and 60/40 solder. The coating burned right off of the strands in about 5 seconds and the solder flowed perfectly. Most motor manufacturers use a solder pot to do the same thing.

The lesson here is to not trim off the factory tinned lead.

[Alexgar]

that a huge iron ive found my 80 watt is more than enough to solder 10ga wire

[Insaniac]

The antique radio guys use Strip-X (probably no longer sold), "Zip Strip" -- methylene chloride or Easy Off oven cleaner to strip the enamel coating on magnet wire.

[6sHyper]

yeah Ray is right you cannot cut the wires on those outrunners because they are a part if the internal windings. If you want them longer you should be extending your esc wires not the motor wires.

[ray schrauwen]

At this point he would be best to shorten all the wires on the motor as accurately as possible, clean off the Varnish by whatever method and then add the wire he wants.

If you were planning a twin, I would just buy a new motor and use this for something else.

[maxmekker]

It's going into my surge crusher with a cheap HK-B125A
esc from hobbyking. I will have a go at it ,and se if it's a go ore blow. Thanks

[ray schrauwen]

You should be fine.

[JackBlack26]

I don't know if its been mentioned but plumbers flux works wonders on wire like that. That's what I use to clean all my solder joints before tinning them, after having the same problem you are having. Not any more.

[ray schrauwen]

That is acid flux.

[maxmekker]

well, I have just done some sanding with fine sanding paper, one lead at the time, no luck.
got hold of some aspirin,but I did not get it to melt 100% outside, but I got some liquid and
dipped the wires in, but again no luck. more soldering tomorrow.

[maxmekker]

a little dremeling did the trick. All god ( well , I' know when the ice is gone)
thanks for watching

[ManuelW]

@ Ray:

First you mix up a few expressions. For the "Impedance" because of shortened motor wires. Yes the motor wires are made out of the same wires as the internal winding inside. But the outer part doesn't affect the impedance or the kv of the motor. Impedance is a physical parameter for a coil (defined by No. of windings and some other stuff which doesn't need to be mentioned here). Second thing is that the complete winding is within the back iron of the motor. When you change the length of the motor wires it has nothing to do with the impedance. Therefore it just has an effect on (ohmic) resistance.

If the wires have not the same length (has to be more than a few cm !) I can imagine it might result in problems of commutation, still not changing kv.

And the Scorpion system justs says that they don't recommend it because the danger is, that its done improperly and therefore resulting in problems. Not any word that it will cause ANY problem when done properly. The statement with many single wires that have to be tinned is true. And I agree, its a lot of sh*t work when you want to get it done well. But my point of view: When cutting the wires, the cutting surface itself is already free of the enamel coating. It might not be optimal but even when at one wire the coating is still there, at this small area every wire should have "contact".

I don't recommend to shorten the motor wires at is a whole lot of work, but not because you get any problems even when its done properly.

Hope my explanations are understandable, I know it may be a difficult topic but I tried and it took me some time to learn about it as well.

Best regards,
Manuel

[ray schrauwen]

@ Ray:

First you mix up a few expressions. For the "Impedance" because of shortened motor wires. Yes the motor wires are made out of the same wires as the internal winding inside. But the outer part doesn't affect the impedance or the kv of the motor. Impedance is a physical parameter for a coil (defined by No. of windings and some other stuff which doesn't need to be mentioned here). Second thing is that the complete winding is within the back iron of the motor. When you change the length of the motor wires it has nothing to do with the impedance. Therefore it just has an effect on (ohmic) resistance.

If the wires have not the same length (has to be more than a few cm !) I can imagine it might result in problems of commutation, still not changing kv.

And the Scorpion system justs says that they don't recommend it because the danger is, that its done improperly and therefore resulting in problems. Not any word that it will cause ANY problem when done properly. The statement with many single wires that have to be tinned is true. And I agree, its a lot of sh*t work when you want to get it done well. But my point of view: When cutting the wires, the cutting surface itself is already free of the enamel coating. It might not be optimal but even when at one wire the coating is still there, at this small area every wire should have "contact".I don't recommend to shorten the motor wires at is a whole lot of work, but not because you get any problems even when its done properly.

Hope my explanations are understandable, I know it may be a difficult topic but I tried and it took me some time to learn about it as well.

Best regards,
Manuel

I agree with almost everything you say. Impedence will change minimally resistance more so.

Yes the end of the wire is fully able to accept solder but, very poor connection.

Looks like we both know what is best. There really is no need to cut motor wires of this type though since they are very rigid, they stay away from the rotating can easier.

[maxmekker]

Good thought.
(There really is no need to cut motor wires of this type though since they are very rigid, they stay away from the rotating can easier.)