Any tips for soldering motor & ESC wires to 8mm Castle connectors ?

[properchopper]

Been having trouble with wires coming out of the solder joint. I usually fill the connector with solder using a small butane torch and insert the wire inside while the solder is liquid, then let it cool and finish off with a soldering tip. I use 62/36/2 solder. I guess I could have doubled over the wire end; the hole in the 8mm is LARGE. Any better ideas that has worked for you ?

[dana]

When exactly are they coming lose tony? When running?

[jkr]

The wire is coming out with the hole solder?
I use flux and solder on the wire before i do the joint.

[properchopper]

When exactly are they coming lose tony? When running?

Customer's boat. Ran great, brought it in. Next power-up it cogged.

[dana]

Hmmm... Have you tried 60/40 solder? Or solid silver solder?

[properchopper]

The wire is coming out with the hole solder?
I use flux and solder on the wire before i do the joint.

That's what I did when I repaired it this morning. When I removed the original connectors (Leo 4082) using a torch, I assumed (yeah, I know ) that there was enough "tinning" on the bare wire end to suffice. Still, the 8mm connector's hole leaves a lot of open space to fill with solder. I'm considering crimping/soldering some brass tubing on the bare wires to step up the diameter of what gets inserted into the bullet. Hmmmm...

[properchopper]

Hmmm... Have you tried 60/40 solder? Or solid silver solder?

My thinking is that the extra 2% silver in the 62/36/2 solder would make it a bit stronger than the regualar 60/40 stuff. I'll have to look into the silver solder issue; haven't tried it so I'll have to learn about it.

[dana]

Can I ask what Leo motor? Prop? Cell count?

[jkr]

That's what I did when I repaired it this morning. When I removed the original connectors (Leo 4082) using a torch, I assumed (yeah, I know ) that there was enough "tinning" on the bare wire end to suffice. Still, the 8mm connector's hole leaves a lot of open space to fill with solder. I'm considering crimping/soldering some brass tubing on the bare wires to step up the diameter of what gets inserted into the bullet. Hmmmm...

Try to make raf surface in the connector.
I also use 60/40 solder iwith no problems.

[siberianhusky]

Are you putting some heat to the connector after you put the wire in? Might be getting a cold joint at the center of the big hole. Lots of surface area to heat with those big un's

[properchopper]

Are you putting some heat to the connector after you put the wire in? Might be getting a cold joint at the center of the big hole. Lots of surface area to heat with those big un's

I keep the torch on the connector to keep the solder liquified while I insert the wire. I think better tinning of the wire end is one step I can do better.

Here's something I found :

http://store.curiousinventor.com/guides/how_to_solder/kind_of_solder/

[dana]

Anyways, seems like desoldering issues can only be fixed one way. A different setup. Jmtc

[properchopper]

Anyways, seems like desoldering issues can only be fixed one way. A different setup. Jmtc

This boat ran with cool motor and ESC temps and used a very moderate amount of mah. The setup was mild. My soldering sucked, pretty sure that was all.

[dana]

Oh, we'll bad soldering is a problem lol. Given the small amount of info you have it's hard to diagnose that. Sounds like you solder like I do tho... And my stuff is ok. I do tin motor leads very well first tho, and I don't bother with a soldering iron after. All torch buddy

[numse1964]

Hi

Be sure your cable is hot. You must use quit big cables for these connectors, and they will build a cold bridge if they ain't about the same temp as the solder and connector.

Best regards Henrik