Hummina Shadeeba
10 MW
http://research.physics.illinois.edu/bezryadin/labprotocol/stycast2850.pdf
What do u think of this potting
- Thread starter Hummina Shadeeba
- Start date
http://research.physics.illinois.edu/bezryadin/labprotocol/stycast2850.pdf
Thud
1 MW
Have you already committed to using it? (those motors look potted)
#1) I don't see a need for fully potting motor windings. this commits your cooling to conduction more so than normal convection.
it may be negating any benefits from increasing air-flow through the motors.
#2) for a correct full encapsulation, you will need a de-gassing vacuum system.
if you just brushed on a thin coat to keep the wires from vibrating & chafing.....I guess it may work alright.
do you plan on following the heat curing schedule to insure its performance ratings?
#1) I don't see a need for fully potting motor windings. this commits your cooling to conduction more so than normal convection.
it may be negating any benefits from increasing air-flow through the motors.
#2) for a correct full encapsulation, you will need a de-gassing vacuum system.
if you just brushed on a thin coat to keep the wires from vibrating & chafing.....I guess it may work alright.
do you plan on following the heat curing schedule to insure its performance ratings?
Hummina Shadeeba
10 MW
It seemed ideal to me with the stator's end winding being the hottest part of the motor and it being 5mm away from a thick aluminum wall and that wall then butting against the rest of the aluminum skate hanger. I don't think I got much convection/airflow back in there anyway and there's potential for a lot of conduction.
The main reason I did it though was to secure the stators which are pressed on thick aluminum, and I think due to the big contrast in thermal expansion of steel and aluminum, the aluminum stator seat was deformed. The only thing holding the stator from spinning was the three wires coming out! I heard clicking noises excelerating and braking
Yea ill follow the post cure schedule.
I'll also smear some on the front to secure windings.
Speaking of convection. I don't want to add any external fan-like fins that could pull air in. I think it would be an eye-sore and maybe noisy and maybe, since the only time these need cooling is going up a steep hill and that's mostly at a slower speed, they wouldn't be very helpful. But if I could add a fin or bump or something on the inside beside each air hole and that could have an air-pulling effect I like that. I could maybe do simulations but doubt I will. Maybe half the holes try to pull in and half out ..who knows. But I would like to simply find if I add a bump of resin or something on the inside if that could add to the air exchange.
All my pics are too big but in this link u can see the six holes on the outside of the motor where air could still come in and I wonder how to possible internal suck air in simply.
https://endless-sphere.com/forums/download/file.php?id=185360
The post cure with the catalyst 9 is room temp 24 hours. Easy.
The main reason I did it though was to secure the stators which are pressed on thick aluminum, and I think due to the big contrast in thermal expansion of steel and aluminum, the aluminum stator seat was deformed. The only thing holding the stator from spinning was the three wires coming out! I heard clicking noises excelerating and braking
Yea ill follow the post cure schedule.
I'll also smear some on the front to secure windings.
Speaking of convection. I don't want to add any external fan-like fins that could pull air in. I think it would be an eye-sore and maybe noisy and maybe, since the only time these need cooling is going up a steep hill and that's mostly at a slower speed, they wouldn't be very helpful. But if I could add a fin or bump or something on the inside beside each air hole and that could have an air-pulling effect I like that. I could maybe do simulations but doubt I will. Maybe half the holes try to pull in and half out ..who knows. But I would like to simply find if I add a bump of resin or something on the inside if that could add to the air exchange.
All my pics are too big but in this link u can see the six holes on the outside of the motor where air could still come in and I wonder how to possible internal suck air in simply.
https://endless-sphere.com/forums/download/file.php?id=185360
The post cure with the catalyst 9 is room temp 24 hours. Easy.
Hummina Shadeeba
10 MW
Bustin sportster pro. No grip tape.
