wilsonintexas
1 µW
- Joined
- Jan 31, 2016
- Messages
- 3
I am a newbe to this so sorry about dumb questions. I have been lurking for a while.
I am not building an ebike, but this forum is probably p close to what I am doing as far as brushless morots and controllers.
I facet gemstones as a hobby. I want to make a brushless motor to spin the laps on my facet machine.
The general parameters of motors currently used , just for ref:
Most are 90v DC variable speed motors.
We typically run on rectified AC that is around 90 volts DC.
Generally they are about 250 to 500 watt motors
We are spinning laps 8 inches diameter, total thickness of the lap is ½ inch and weighs about 10 ponds.
The speed is between 10 and 200 rpm.
To fit on the machine, I am looking for a motor about 5 inches in diameter, and 2 inches thick.
I have some scrapped parts from an ATV magneto that I think will work for my stator and can. The stator is 4 inches in diameter. The magnets are .300 thick and about an inch tall.
I can get several fly wheels with from 4 to 6 magnets. I know that 12 pole 6 magnet is a bad combo. I can get some scrap flywheels and take out the magnets. I hope that I can then cut them or split them and get a 14 magnet motor.
I would really like it if I can use a existing 4 magnet fly wheel, It would same a lot of hassle.
I know that the magnets are racially polarized. ( poles at the ends not the faces). But I was looking at a motor simulation page. There was a drop down for radially poled magnets.
This gave me s little hope that I could use he existing magnets in some way.
It would be very easy if I could use a 4 magnet flywheel. It is already a compete can with magnets, and is balanced.
The first few question that will help me do some simulations (which I am just learning)
1) can I use radial poled magnets with an ebike controller?
2) From a rules of thumb or AT LEAST THE EXPERIENCE OF THE GROUP. Does a 4 magnet motor have a chance in this application
3) If the answer is no, how does a 14 pole motor sound?
That will get me started. I am sure that more will follow.
I am not building an ebike, but this forum is probably p close to what I am doing as far as brushless morots and controllers.
I facet gemstones as a hobby. I want to make a brushless motor to spin the laps on my facet machine.
The general parameters of motors currently used , just for ref:
Most are 90v DC variable speed motors.
We typically run on rectified AC that is around 90 volts DC.
Generally they are about 250 to 500 watt motors
We are spinning laps 8 inches diameter, total thickness of the lap is ½ inch and weighs about 10 ponds.
The speed is between 10 and 200 rpm.
To fit on the machine, I am looking for a motor about 5 inches in diameter, and 2 inches thick.
I have some scrapped parts from an ATV magneto that I think will work for my stator and can. The stator is 4 inches in diameter. The magnets are .300 thick and about an inch tall.
I can get several fly wheels with from 4 to 6 magnets. I know that 12 pole 6 magnet is a bad combo. I can get some scrap flywheels and take out the magnets. I hope that I can then cut them or split them and get a 14 magnet motor.
I would really like it if I can use a existing 4 magnet fly wheel, It would same a lot of hassle.
I know that the magnets are racially polarized. ( poles at the ends not the faces). But I was looking at a motor simulation page. There was a drop down for radially poled magnets.
This gave me s little hope that I could use he existing magnets in some way.
It would be very easy if I could use a 4 magnet flywheel. It is already a compete can with magnets, and is balanced.
The first few question that will help me do some simulations (which I am just learning)
1) can I use radial poled magnets with an ebike controller?
2) From a rules of thumb or AT LEAST THE EXPERIENCE OF THE GROUP. Does a 4 magnet motor have a chance in this application
3) If the answer is no, how does a 14 pole motor sound?
That will get me started. I am sure that more will follow.
