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Posted by Ignoramus9972 on February 24, 2008, 4:23 pm
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Went to an estate sale of an incredible packrat. Saw some really
amazing crap like a lot of flat belt drive (like in old factories)
mills, grinders etc. All in bad shape from years of neglect and
sitting in an unheated barn.
I picked up a gearmotor, with a GE motor, 115v, weight maybe 10 lbs.
It would not start when connected to 115v. It hums and does not start
spinning. However, if I give the output low speed shaft a turn with
pliers, it starts spinning and keeps spinning.
The motor does not have a visible hump for a capacitor.
So, my thinking goes, either there is a cap inside the motor that is
bad, or , perhaps, the motor is of the kind that does not require a
capacitor and has only minimum torque at stall, and somehow there is
some stuckage in the motor bearings or gears. Possibly the weather is
cold and the gear lubricant is too thick.
any ideas, thanks, i
i
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Posted by Mechanical Magic on February 24, 2008, 4:32 pm
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wrote:
> Went to an estate sale of an incredible packrat. Saw some really
> amazing crap like a lot of flat belt drive (like in old factories)
> mills, grinders etc. All in bad shape from years of neglect and
> sitting in an unheated barn.
>
> I picked up a gearmotor, with a GE motor, 115v, weight maybe 10 lbs.
>
> It would not start when connected to 115v. It hums and does not start
> spinning. However, if I give the output low speed shaft a turn with
> pliers, it starts spinning and keeps spinning.
>
> The motor does not have a visible hump for a capacitor.
>
> So, my thinking goes, either there is a cap inside the motor that is
> bad, or , perhaps, the motor is of the kind that does not require a
> capacitor and has only minimum torque at stall, and somehow there is
> some stuckage in the motor bearings or gears. Possibly the weather is
> cold and the gear lubricant is too thick.
>
> any ideas, thanks, i
>
> i
Externally mounted capacitor.
Maybe you can find a wiring diagram, if it has a nameplate.
How is it wired? Terminals, and or wires?
Dave
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Posted by Leo Lichtman on February 24, 2008, 4:38 pm
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"Ignoramus9972" (clip) if I give the output low speed shaft a turn with
> pliers, it starts spinning and keeps spinning. (clip)
^^^^^^^^^^^^^^^^^^^
Will it start in either direction when helped with pliers? If the poor
starting is caused by gummy bearings it will not run backwards. If the
problem is in the capacitor (bad or missing) you will be able to start it in
either direction. This could also indicate a stuck start/run switch.
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Posted by RoyJ on February 24, 2008, 5:57 pm
Please log in for more thread options As someone else mentioned: will it start in either direction? If so, bad
switch or bad starter winding. If there are only 2 wires and no cap,
suspect a stuck centrifugal starting switch. Pull off the wiring end,
jab at the switch.
Ignoramus9972 wrote:
> Went to an estate sale of an incredible packrat. Saw some really
> amazing crap like a lot of flat belt drive (like in old factories)
> mills, grinders etc. All in bad shape from years of neglect and
> sitting in an unheated barn.
>
> I picked up a gearmotor, with a GE motor, 115v, weight maybe 10 lbs.
>
> It would not start when connected to 115v. It hums and does not start
> spinning. However, if I give the output low speed shaft a turn with
> pliers, it starts spinning and keeps spinning.
>
> The motor does not have a visible hump for a capacitor.
>
> So, my thinking goes, either there is a cap inside the motor that is
> bad, or , perhaps, the motor is of the kind that does not require a
> capacitor and has only minimum torque at stall, and somehow there is
> some stuckage in the motor bearings or gears. Possibly the weather is
> cold and the gear lubricant is too thick.
>
> any ideas, thanks, i
>
> i
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Posted by Ignoramus9972 on February 24, 2008, 7:08 pm
Please log in for more thread options THanks, gentlemen. There are three wires, red, white and green, which
I assumed was the ground. Now I think that it is a cap start and re
quires an external capacitor.
i
> As someone else mentioned: will it start in either direction? If so, bad
> switch or bad starter winding. If there are only 2 wires and no cap,
> suspect a stuck centrifugal starting switch. Pull off the wiring end,
> jab at the switch.
>
>
>
> Ignoramus9972 wrote:
>> Went to an estate sale of an incredible packrat. Saw some really
>> amazing crap like a lot of flat belt drive (like in old factories)
>> mills, grinders etc. All in bad shape from years of neglect and
>> sitting in an unheated barn.
>>
>> I picked up a gearmotor, with a GE motor, 115v, weight maybe 10 lbs.
>>
>> It would not start when connected to 115v. It hums and does not start
>> spinning. However, if I give the output low speed shaft a turn with
>> pliers, it starts spinning and keeps spinning.
>>
>> The motor does not have a visible hump for a capacitor.
>>
>> So, my thinking goes, either there is a cap inside the motor that is
>> bad, or , perhaps, the motor is of the kind that does not require a
>> capacitor and has only minimum torque at stall, and somehow there is
>> some stuckage in the motor bearings or gears. Possibly the weather is
>> cold and the gear lubricant is too thick.
>>
>> any ideas, thanks, i
>>
>> i
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> amazing crap like a lot of flat belt drive (like in old factories)
> mills, grinders etc. All in bad shape from years of neglect and
> sitting in an unheated barn.
>
> I picked up a gearmotor, with a GE motor, 115v, weight maybe 10 lbs.
>
> It would not start when connected to 115v. It hums and does not start
> spinning. However, if I give the output low speed shaft a turn with
> pliers, it starts spinning and keeps spinning.
>
> The motor does not have a visible hump for a capacitor.
>
> So, my thinking goes, either there is a cap inside the motor that is
> bad, or , perhaps, the motor is of the kind that does not require a
> capacitor and has only minimum torque at stall, and somehow there is
> some stuckage in the motor bearings or gears. Possibly the weather is
> cold and the gear lubricant is too thick.
>
> any ideas, thanks, i
>
> i