motor

[perdigon]

hello
in my engine into water
I have never taken the bike in the rain
only small pools
I lack a checkpoint
not if it brings
or assembly is oblivion
I send photo
no single bearing retainer

[perdigon]

I removed the engine
rust cleaned with fine sandpaper
cleaned with alcohol
I give the surface some items to avoid oxidation

[perdigon]

hall sensor
all burnt
I wonder if the warranty should cover replacement

[GM Brazil]

The water can get in by the humidity of the air. When the motor heats up the air inside is capable of absorb more water form the air outside, when the motor cools down this water condensates.

I do not think that sealed motors are better, exactly because of this, they should have some type of drain port, but I really do not know how to solve this behavior for now, any ideas?

[Leslie]

The water can get in by the humidity of the air. When the motor heats up the air inside is capable of absorb more water form the air outside, when the motor cools down this water condensates.

I do not think that sealed motors are better, exactly because of this, they should have some type of drain port, but I really do not know how to solve this behavior for now, any ideas?

Strangely I think the same.  I swear its been documented before.  Seal your wheel and water ends up building up in it.

In fact I think everything that produces heat that Ive tried to seal air tight has ended up with water or moisture in it. Lights, controllers ect.  Well at least thats what I have experienced.

Sealing some boxes that induce low expansion in front of an air-conditioner yields a cleaner job. Lights and lenses and stuff.

There is no solution.  Ohh hang one guy found a material that allows stuff to move only one way through it.

[Leslie]

I think what happens the heat in the motor causes all the seals to vent out air then when it cools it breaths new air and humidity in.  The cool steel and surrounding humidity under a slight vacuum returning to balanced with the atmosphere outside the case must cause condensation.

next ride the water turns into steam and the case environment expands again above atmospheric pressure.  A small amount of steam air is pushed through the seals.  The motor cools again and creates a slight vacuum, fresh air seeps into the motor slowly.  and the cycle continues.

Think like an air compressor, you have to bleed the water out of them all the time.

I think normal weather pressure variation causes it to happen too and possibly contributes to the above effect.

[Leslie]

Perdigon.

These are the parts you need.

Buy more than you need.

http://parts.digikey.com/1/parts/948156-sensor-ss-hall-effect-bipolar-ss41.html

Replace them.

Maybe GM will send you out some replacements.

[perdigon]

hola
my battery is 36v
I see that the maximum 24v ss41

[Leslie]

hola
my battery is 36v
I see that the maximum 24v ss41

Yes the maximum for the ss41 is good for such a class IC and the thermal capabilities are within range.

When you put a battery on a controller, the power goes through regulation and becomes 3 different voltages.

>Full pack voltage for the fet source for maximum motor power

>12v for the gate drivers of the fet and

>5v for hall sensor, throttle sensor, PWM generation, logic and MCU power up.

If you test the supply of the all the hall power leads (red and black) They should be under 5v.

The SS41 is well within spec here.

You just need to make sure when you replace them you use the right materials to keep the heat from taking away the life span.

[perdigon]

thanks for the help
I placed an order for the hall sensor

[Leslie]

Yes now look at the way GM has put the Hall sensors into the motor.

On my hub they used a lot of heat insulation around long pin leads in between the stator and circuit board assembly to stop the hall pins from transmitting heat along into the IC.
How you put them in will either make it last long or last a couple of months.

[perdigon]

hi
I will mount the hall sensor
I must give varnish
after placement
thanks

[Leslie]

Good work.

I used varnish to set them.  That worked.  I think I had a problem with two part glue or the fact I once didn't use the heat resistant material in between the circuit board and windings.

I think soldered pins of the hall sensor transferred heat from the board solder tracks into the chip.  On a hot day the heat got too much.

Keep this in mind and good luck.

[perdigon]

hello
I've seen a ping controller without soldering trea
ping of the three that has
the middle one is not soldered to the motherboard
this table must be a soldier?
is a coil

[Leslie]

I try for you to translate as your english is not good,  this is OK.  

I understand motherboard as the PCB that is controller solder to.

The middle one is not on the motherboard, and its color wire is red? Black? Green? blue? yellow?

Is big wire or small wire?

Is this coil?

big wire is coil for motor and small wire is hall or throttle.

Maybe you are from the good country of South Americas?

GM brazil,  Bruno could help you much here.

If not where is your country you are living?