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Treadmill motor / generator in the air at last !
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20
comments (20 topical, 0 editorial)
Re: Treadmill motor / generator in the air at last
(
3.00 / 0
) (
#4
)
by tecker on Thu Mar 8th, 2007 at 03:28:38 AM MST
(
User Info
)
That's a good orientation for that unit as it puts the armature play against the larger bearing race instead of pushing the armature into the brush side and it's smaller bearing . They are typically a little loose and the shafts could use some spacers on the shaft . The case bolts penetrate through into the motor so you might want to band it around the motor and use the case bolts as a safety instead of main mount bolts . The vibration gets to the fasteners eventually. Watch the brush temp and hold the current down to 5 amps and let the voltage rise behind a control . When the brushes heat up they dust up the commutator and give you some problems . If you run the brushes hot all the time they grind right down. Typically the brushes are good for 2000 hrs of duty so get another set or a couple more motors as backup the brushes are acommon size . Take a small gringing wheel carefully to the commutator spaces when you change the brushes .
Re: Treadmill motor / generator in the air at last
(
3.00 / 0
) (
#5
)
by tecker on Thu Mar 8th, 2007 at 03:42:57 AM MST
(
User Info
)
One other thing is watch the stress on the connections I'm still looking for a solid change for that internal connection I think a lug will work well .They are cheap enough to be very good unit . They need some mods to be good for the long run .
[
Parent
]
Re: Treadmill motor / generator in the air at last
(
3.00 / 0
) (
#19
)
by CmeBREW (
smke833f@hotmail.com
) on Mon Mar 12th, 2007 at 04:19:42 PM MST
(
User Info
)
You really know your motors Tecker,
You are very right. One of the wires did fall off soon after I received it. (a design error no doubt by them) I simply soldered BOTH wires back. I wrapped the wire around the wire that comes from the brush and soldered it. No big deal- only took a few minutes since soldering is so easy. There was one more little design error I forgot to mention in my main post. The front of the motor is not secured well enough for high torque situations. (the whole front that houses the front bearing will actually 'shift' or move or turn one way or the other since there is no notch to hold it in place to the main body of the motor. This must be secured if one is going to use it as a windmill due to the extreme torque conditions.(especially if one intends to make the 'magnet cog reducer' in the front) What I did was tap a 3/16" bolt in the main housing up near the front to keep one of the two long bolts (that go thru the entire motor) from moving and thus the front could not move anymore in the counterclockwise direction. (thats the direction the 4' rotor turns) Other than that, it makes a nice wind turbine.
[
Parent
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Treadmill motor / generator in the air at last !
|
20
comments (20 topical, 0 editorial)
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