Nemesis Factory Wire Lengths??

[Darin Jordan]

When you guys install a Nemesis or similiar Brushless motor, do you leave the factory wires on the motor at their full factory length?

I was thinking of shortening them, installing 3.5mm gold pins on them, and making up the length with the wires on the Barracuda ESC (actually, those will be able to be shortened as well...)

Is there any negative effects, other than the wires possibly being too short for a future installation, to making the motor wires shorter??? They are so rigid that making a clean installation is tough, plus the extra length isn't really needed for my installation... Isn't the idea to get these wires as short as possible to lower the resistance anyhow???

Thanks,

[Jeff Shriver]

Ideally, you want these wires as short as possible. In fact, I pulled the following from a Schulze Future speed controller pdf:

... all high-current cables must be as short as
possible. Maximum length between flight
pack and speed controller should not exceed
20 cm (7"), between speed controller and
motor: 10 cm (4").

I should shorten some of the wires on my speed controlers. Since some of my controllers do double duty in different boats, I have to make sure I maintain enough length to ensure I can reach the motor for all my setups.

[Old Sloppy]

remember to keep the equal length of the motor wires.
this is important.

on my hacker 77 ESC and Lhener 2250, I didn't shorten the wires, and they work just fine.

I believe the danger is in making the wires longer.
the inductance would be increased.

p.s. it's not about resistance, it's reactance. remember this is an
AC 3 phase circuit.

[Garry Finlay]

I other concern is the connection of the controller to the motor leads. A good solder joint is the best. The gold connectors are OK. If you shorten the motor wires be sure you have good wire surfaces to tin properly for a very good solder connection to either the connectors or straight to the controller wires.

Garry

[Darin Jordan]

Originally posted by Garry Finlay
I other concern is the connection of the controller to the motor leads. A good solder joint is the best.

Well, I want maximum performance, and I don't have to swap ESCs between boats...

Maybe I'll try the soldering method... when you do this... do you just connect wire-to-wire??

How much am I losing with the Gold connectors??

Thanks,

[AndyKunz]

Not enough to worry about for the convenience you gain when you smoke the ESC.

I keep my BL motor leads as short as possible, and try to keep them right AT the motor if I can.

NEVER EVER put any kind of extension in them.

Andy

[Steven Vaccaro]

Do direct solder method if you don't have to swap things around. I watched Dick Crowe lose a race because of a gold connector that pulled apart.

[Darin Jordan]

Originally posted by Pagemaster
I watched Dick Crowe lose a race because of a gold connector that pulled apart.

On my Hydro... I used the Gold connectors (from Fullers) but I slipped a piece of heat shrink over the entire connection and shrunk it, just to try to prevent such a problem...

[starluckrc]

While it is ok to shorten the leads to the motor from the esc, do not shorten the motor leads themselves. These are the actual windings of the motor and lacquer coated. It won't be fun trying to get the lacquer coating off so you can solder to the wires again and you could risk damaging the motor or controller.

[Jay Turner]

My newest Hacker motor instructions say "Do not shorten the motor wires." It also says to solder the motor to the ESC; obviously this is open to opinion.

In the past I have soldered a few ESCs to the motors, and to do it I cut short (1/2") lengths of 1/8" copper tubing and soldered the wires into each end; then I covered it with heat shrink. This gave a small, clean connection with minimum resistance.

[Steven Vaccaro]

Originally posted by Jay Turner
In the past I have soldered a few ESCs to the motors, and to do it I cut short (1/2") lengths of 1/8" copper tubing and soldered the wires into each end; then I covered it with heat shrink. This gave a small, clean connection with minimum resistance. [/B]
Thats a great idea Jay. But where do you find copper tubing that small?

[Jay Turner]

In the K&S display at the LHS. Actually, after checking again it's 5/32" copper tubing.

[AndyKunz]

Originally posted by starluckrc
It won't be fun trying to get the lacquer coating off so you can solder to the wires again and you could risk damaging the motor or controller.

If you have a solder pot it takes about 5 seconds to do it. If you don't have a solder pot, don't touch them.

Andy