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General Metalworking - All aspects of working with metal.
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Posted by William Noble on May 12, 2008, 12:20 am
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> Woohooo William, the belt sander lives again.
>
> Thanks, that did the trick. The first try was wired as described, the
> motor just growled. I swapped the momentary switch wire to the Neutral
> side of the mains and bingo. Starts in an instant, CCW every time.
>
> Thank you so much for suggesting a momentary switch to replace the relay.
> I would never have thought of it.
>
> I had a suitable switch in the scrap box. I purchased a $20 box of mixed
> switches from one of the surplus places and as it turns out I got three
> robust momentary in the batch. A no cost repair, my favorite.
>
> I am guessing this cheap Chinese motor will last another 10 years. <g>
>
> Thanks also to all who offered help with the treadmill motor. I'd still
> like to know how to wire it just in case I need to use it the future.
>
> Dave
glad to be of service -- if the windings dont' get destroyed, there is
almost no failure mode for an AC induction motor - bearings can go bad, but
they are cheap to replace, the starter can go bad, as you saw, but it's not
hard to work around, and if there is a capacitor, it can (and will) go bad
but is easy to change.
the moral here is to fix rather than replace with something different. It's
not too hard.
** Posted from http://www.teranews.com **
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Posted by Ken Sterling on May 11, 2008, 8:28 am
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>Hi Bill,
>
>Thanks for the reply.
>
>The original motor was AC with a delay relay instead of start cap.
>Therefore I cannot simply use a start cap as there is no centrifugal
>switch in the motor. The AC motor runs fine, but I have to hand start it
>to give it direction.
>
>I'd also challenge the "cheap" statement as this thing has done 1000s of
>hours work and had the switch-relay not fried I am sure it would do many
>more 1000s as the motor runs smooth, cool and quiet.
>
>The Treadmill motor that SC had gazillions of came with it's own
>controller. I assumed people that were familiar with the treadmill motor
>from SC would know what I am talking about. Sorry, I should have been
>more specific.
>
>The schematic in the drop box that I mentioned is for the GE controller.
>I have both the GE controller and the GE DC treadmill motor. This motor
>has a 5/8" shaft about 1-1/2" long and keyed 3/16" I think. It us rated
>at 2hp, but given it's size and max current draw, I am guessing closer
>to 3/4hp.
>
>It is not a permanent magnet DC motor as it has windings.
>
>Perhaps see my reply posts to William and Art as well.
>
>Dave
>
Dave......
Get a Sinpac Switch (Electronic Starting Switch) PV16 should do it.
Google for the information. I've installed lots of them and haven't
had ANY crap out yet (YET!) Replaces centrifugal actuators and
switches easily.
Ken.
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Posted by Gunner on May 10, 2008, 11:19 pm
Please log in for more thread options On Sat, 10 May 2008 11:44:54 -0700 (PDT), "Dave, I can't do that"
>Hi,
>
>The motor on my HF 4 x 36 belt sander went belly up after only about 6
>or 8 years. Sheesh. I contacted HF for a new one and it is going to be
>40-bucks plus shipping and 12 to 15 week wait. <sigh>
>
>I was scrounging around under the benches and found one of the
>Treadmill motors and controllers that Surplus Center used to sell.
>
>Problem is I have a bunch of wires hanging out of the motor and no
>idea who goes where.
>
>I checked the dropbox and there is a schematic for the controller but
>nothing for the wires to the motor.
>
>Can anyone please help me with how to wire this up.
>
>Thanks guys.
>
>Dave
Geeze, Ive been trying to GIVE away 2.5hp 100vt DC treadmill motors
(NIB) for years. They only have 2 wires.
Still have a stack of about 20 , in the way.
Gunner
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Posted by Larry Jaques on May 11, 2008, 2:47 am
Please log in for more thread options On Sat, 10 May 2008 20:19:43 -0700, with neither quill nor qualm,
>On Sat, 10 May 2008 11:44:54 -0700 (PDT), "Dave, I can't do that"
>
>>Hi,
>>
>>The motor on my HF 4 x 36 belt sander went belly up after only about 6
>>or 8 years. Sheesh. I contacted HF for a new one and it is going to be
>>40-bucks plus shipping and 12 to 15 week wait. <sigh>
>>
>>I was scrounging around under the benches and found one of the
>>Treadmill motors and controllers that Surplus Center used to sell.
>>
>>Problem is I have a bunch of wires hanging out of the motor and no
>>idea who goes where.
>>
>>I checked the dropbox and there is a schematic for the controller but
>>nothing for the wires to the motor.
>>
>>Can anyone please help me with how to wire this up.
>>
>>Thanks guys.
>>
>>Dave
>
>
>Geeze, Ive been trying to GIVE away 2.5hp 100vt DC treadmill motors
>(NIB) for years. They only have 2 wires.
>
>Still have a stack of about 20 , in the way.
Hehehe. I still have the three you pawned off on me on that last
visit. You said "Hey, there's still room in your truck. Take some of
these!" <g>
-
Gently-used Firestone tires for sale at discount!
-----------
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Posted by Gunner on May 11, 2008, 5:04 am
Please log in for more thread options On Sat, 10 May 2008 23:47:56 -0700, Larry Jaques
>On Sat, 10 May 2008 20:19:43 -0700, with neither quill nor qualm,
>
>>On Sat, 10 May 2008 11:44:54 -0700 (PDT), "Dave, I can't do that"
>>
>>>Hi,
>>>
>>>The motor on my HF 4 x 36 belt sander went belly up after only about 6
>>>or 8 years. Sheesh. I contacted HF for a new one and it is going to be
>>>40-bucks plus shipping and 12 to 15 week wait. <sigh>
>>>
>>>I was scrounging around under the benches and found one of the
>>>Treadmill motors and controllers that Surplus Center used to sell.
>>>
>>>Problem is I have a bunch of wires hanging out of the motor and no
>>>idea who goes where.
>>>
>>>I checked the dropbox and there is a schematic for the controller but
>>>nothing for the wires to the motor.
>>>
>>>Can anyone please help me with how to wire this up.
>>>
>>>Thanks guys.
>>>
>>>Dave
>>
>>
>>Geeze, Ive been trying to GIVE away 2.5hp 100vt DC treadmill motors
>>(NIB) for years. They only have 2 wires.
>>
>>Still have a stack of about 20 , in the way.
>
>Hehehe. I still have the three you pawned off on me on that last
>visit. You said "Hey, there's still room in your truck. Take some of
>these!" <g>
I actually hooked one up through a big autotransformer and a bridge
rectifier, and they run pretty good.
Gunner
>
>-
> Gently-used Firestone tires for sale at discount!
> -----------
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>
> Thanks, that did the trick. The first try was wired as described, the
> motor just growled. I swapped the momentary switch wire to the Neutral
> side of the mains and bingo. Starts in an instant, CCW every time.
>
> Thank you so much for suggesting a momentary switch to replace the relay.
> I would never have thought of it.
>
> I had a suitable switch in the scrap box. I purchased a $20 box of mixed
> switches from one of the surplus places and as it turns out I got three
> robust momentary in the batch. A no cost repair, my favorite.
>
> I am guessing this cheap Chinese motor will last another 10 years. <g>
>
> Thanks also to all who offered help with the treadmill motor. I'd still
> like to know how to wire it just in case I need to use it the future.
>
> Dave