cutting brushless motor wires shorter.

[m1009cucv]

can this be done with no problems? thanks

[crawler nut]

Yes.

[DRTMI]

If you are talking about motors that have the wires coming directly out of the motor, no, don't cut them. Those wires are direct from the stator and cutting that wire will alter the stator. Also, it is very hard to solder the wire that comes out the BL motors doe to the wire itself.

[greggreg2011]

x1 some you can some you cant. tell us what motor and im sure someone will chime in to let you know

[smoedog]

Im assuming its a sensorless motor. Yes you can, but you have to ensure they are all equal length when you cut them

[ik632]

Some motors you can and others you can't. You'll need to look at what the manufacturer says for the particular motor.

[Duuuuuuuude]

If the wires are flexible and noodly, yes, you can cut them. If they are stiff and stay bent when you flex them, then no, you can't cut them.

[m1009cucv]

its a tacon 96m11 2848-4300kv. yes they come right out of the motor

[Duuuuuuuude]

You can't cut wires on a Tacon.

[m1009cucv]

got it thanks

[Hardline]

Originally Posted by Duuuuuuuude

You can't cut wires on a Tacon.

So I'll just kick up an old thread instead of starting a new one. Why on earth can't you cut/splice any wire?

If it's a non-solderable wire that's crimped in the connector -- okay I'll buy that. But I don't get the people who say you'll change the wire's length. That wire goes all the way to the esc and it's whatever length I choose. Electrons don't know where the connector is. (Do they? )

[Duuuuuuuude]

Originally Posted by Hardline

So I'll just kick up an old thread instead of starting a new one. Why on earth can't you cut/splice any wire?

If it's a non-solderable wire that's crimped in the connector -- okay I'll buy that. But I don't get the people who say you'll change the wire's length. That wire goes all the way to the esc and it's whatever length I choose. Electrons don't know where the connector is. (Do they? )

Noodley wires on a motor are just like any other noodley wire. Cut, strip, and solder as long as you cut them all the same length.

The non-noodley wires are the same wire that was used to wind the motor and it coated with a resin that you have to be extra careful to strip off cleanly and solder properly. You technically can cut and resolder, but its something you shouldn't do unless you are at least pretty fair with a soldering iron. A crappy solder there will do damage to the esc or motor.

Otherwise, the wires still need to be the same length as a different length will result in a different resistance. In all actuality it may not be enough to make a difference (unless one is way short) but its a good practice to keep.

[Olle P]

Originally Posted by Duuuuuuuude

... the wires still need to be the same length as a different length will result in a different resistance.

What type of tolerances are we talking here?
Given the internal resistance per meter in the wire compared to the differences in resistance between the individual motor-ESC connectors I'd rate "same length" to be "give or take an inch".

To really have the same resistance one must measure resistances A-B, B-C and A-C at the ESC, using an ohmmeter with a precision of 0.1 milliohms or better.

[Duuuuuuuude]

I'm not exactly sure what the tolerance is, but as I said its just a good practice to keep them as even as possible. I'm a big fan of balance and symmetry.

[monkeyracing]

Been there, done that. They are simply extensions of your stator windings. if they get uneven, your esc may throw a hissy fit. Keep them even. It'll probably be fine.

[SKuhn68]

I have a 18-11 2000kv Micro Brushless Outrunner (10g) and accidentally pulled one of the 2mm banana plugs off. Now that I have soldered it back on, that lead is 3.5mm shorter than the other two. Is this going to be an issue with performance or a danger to my motor or ESC? I would sure like to know before I put power to it.

[JohnRobHolmes]

Originally Posted by Hardline

So I'll just kick up an old thread instead of starting a new one. Why on earth can't you cut/splice any wire?

The magnet wire that is pulled from the stator is a pain to strip. The best and practically only method that will properly re-dress magnet wire is a dip into a hot solder vat. Otherwise, the task is a HUGE pain even for guys like me that do this stuff every day.

Originally Posted by SKuhn68

I have a 18-11 2000kv Micro Brushless Outrunner (10g) and accidentally pulled one of the 2mm banana plugs off. Now that I have soldered it back on, that lead is 3.5mm shorter than the other two. Is this going to be an issue with performance or a danger to my motor or ESC? I would sure like to know before I put power to it.

Did the wire break off? Maybe they just didn't solder the other bullets in the same spot. But it really isn't too big of a deal. Resistive differences to motor phases are not critical when they are outside of the stator. Good to be balanced, yes. But don't worry about a little difference on a little motor.

[QuesoDelDiablo]

3.5mm shouldn't cause an issue.

[TheAxialNut]

NIKE!



Just do it, and learn......



That's the way of the West....

[drzoo2]

Your looking at a difference measured in the micro ohm level. The current change between what it was, and what it is now is negligible. What you really should be concerned with is making sure that the enamel on the motor wires is fully cleaned, making sure ALL wires carry current.

Sent from my XT1575