How does over tinning cause the motor to fail? How far up did it go? All three of my neu motors came tinned pretty much the same, a good centimeter or more up the wire but not so much that it caused a problem.

Most of the wire is tinned.

I don't know. Not sure how over tinning would cause the motor to fail. I have just learned to constantly keep checking my solder joints to make sure they are solid. I have found the constant bumping and chassis slapping from racing can cause the solder to break a bit.

Lesson learned, get a new motor and move on...

If the solder makes it into the motor windings you will have a problem. That's. where over tinning becomes a problem. It's not just the tinning part per say but how long and/or how much heat is applied to the material while soldering the joints together

There's really no reason to keep debating this - you really need to just send it back to Neu. They're a great company and aren't there to rip you off. If they over-tinned the wires and that caused the motor to fail then they'll tell you that. Should have a good turn around time too since they're here in the U.S. Be happy you have a Neu as some of us have learned costly lessons with Lehner motors :lol:

I came home today with a new neu. :) The slip said "internal short" Replaced the case, stator, and bearings.

That was a nice end to the week.

On a side not, the whole wire is tinned again. :/ What ever happened to only tinning the part of the wire that is gonna be soldered?

Only one way to find out if it works properly....

By "the whole wire is tinned again" do you mean the leads exiting the motor? Like there isnt any heatshrink exiting the can, just tinned leads? If the heatshrink is there then don't worry about it. If they are too long to go where you want them to I guess you could try to heat them up and bend them, but I would just shorten them a bit to create a larger radius. Just don't shorten them past the tinned part. :oh:

[Epiphany] Hey maybe that's why they come tinned all the way to the can now. [/Epiphany]

Also, the wires are normally super stiff under the shrink tubing because the wires are the motor windings, possibly to be confused with over solder soaked flexible wire. As someone else said, unless you removed all the insulation how can you tell how far it's tinned?

You can tell by trying to bend the wire, they are definitely tinned more than 3/4 of the wire No need for me to remove the heat shrink this time, it's obvious.

I just find it weird. Both my medusas and my 8xl just had the tips tinned. I'm sure there is a reason.