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Metalworking (rec.crafts.metalworking) Discuss various aspects of working with metal, such as machining, welding, metal joining, screwing, casting, hardening/tempering, blacksmithing/forging, spinning and hammer work, sheet metal work. |
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#1
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Power supply for wheelchair motor?
I recently dumpster dove for a couple of 24 volt 400-600 (estimated)
Watt, 3000rpm motors with controller off a Ranger II (1999) wheel chair. They each have a gear box that should be either 18:1 or 24:1. Would these be good for converting to a variable speed drill press? I need a power source as these ran off 2 12v car size batteries. I haven't been able to determine the exact specs of the motors as the manufacturer is not cooperating, and the motors have a minimal amount of information. Any suggestions on obtaining a reasonably priced power source? How many amps? -Mike |
#2
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Power supply for wheelchair motor?
On 5 May 2006 08:50:12 -0700, "mlcorson" wrote:
I recently dumpster dove for a couple of 24 volt 400-600 (estimated) Watt, 3000rpm motors with controller off a Ranger II (1999) wheel chair. They each have a gear box that should be either 18:1 or 24:1. Would these be good for converting to a variable speed drill press? I need a power source as these ran off 2 12v car size batteries. I haven't been able to determine the exact specs of the motors as the manufacturer is not cooperating, and the motors have a minimal amount of information. Any suggestions on obtaining a reasonably priced power source? How many amps? -Mike 600 watts at 24 volts is 25 amps -- but current under heavy load for short durations could easily approach 100 amps. Ignoramus may be able to steer you to a surplus source -- I know he has recently bought and sold such power supplies. In order to build your own you would need a pretty humongous 24-volt transformer rated for 500 to 1000 VA -- pricey if bought new. You could probably re-wind a new secondary on an old microwave oven transformer if you were up for that. |
#3
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Power supply for wheelchair motor?
On Fri, 05 May 2006 11:41:34 -0500, Don Foreman wrote:
On 5 May 2006 08:50:12 -0700, "mlcorson" wrote: I recently dumpster dove for a couple of 24 volt 400-600 (estimated) Watt, 3000rpm motors with controller off a Ranger II (1999) wheel chair. They each have a gear box that should be either 18:1 or 24:1. Would these be good for converting to a variable speed drill press? I need a power source as these ran off 2 12v car size batteries. I haven't been able to determine the exact specs of the motors as the manufacturer is not cooperating, and the motors have a minimal amount of information. Any suggestions on obtaining a reasonably priced power source? How many amps? -Mike 600 watts at 24 volts is 25 amps -- but current under heavy load for short durations could easily approach 100 amps. Ignoramus may be able to steer you to a surplus source -- I know he has recently bought and sold such power supplies. Don, sorry, I sold all of my PP-1104C/G power supplies (which would work for the OP). They are all gone. Turns out that they have many good uses, some guy bought 3 of them at a time. One of them was bought by a person who is restoring an old helicopter. I do, however, have a "Eagle Picher" UPS that is rated for 500 VA (if I recall correctly) and that produces 24 volts output (that is, it is a UPS, but one with 24 volt output, not with 110V output as is normally the case). The OP could adopt it to his needs, I think. I have not tested it yet. I had 3 of them, sold two to a guy who just wanted them for cases, it has a nice aluminum case. This thing is a size of a desktop computer. It is not heavy as it is without batteries. I could sell it for not too much. I think that the OP could do well looking for some local deal like a burned out machine with a suitable transformer, a battery charger, whatever. If he could buy four like this: http://cgi.ebay.com/ws/eBayISAPI.dll...tem=7612278679 he would be set. If he is interested, I could try that Eagle Picher UPS to see if can be used just as a voltage source. i |
#4
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Power supply for wheelchair motor?
Iggie:
What do you mean 4 of these in reference to the ebay listing? Use 4 in series? The UPS, would it have sufficient amperage? Thanks -Mike |
#5
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Power supply for wheelchair motor?
On 5 May 2006 10:15:23 -0700, mlcorson wrote:
Iggie: What do you mean 4 of these in reference to the ebay listing? Use 4 in series? The UPS, would it have sufficient amperage? Thanks -Mike See my separate post "whoever wanted the 24VDC 500W power supply". I took some photos. See that post. i |
#6
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Power supply for wheelchair motor?
On Sat, 06 May 2006 00:06:59 GMT, Ignoramus22440
wrote: On 5 May 2006 10:15:23 -0700, mlcorson wrote: Iggie: What do you mean 4 of these in reference to the ebay listing? Use 4 in series? The UPS, would it have sufficient amperage? Thanks -Mike See my separate post "whoever wanted the 24VDC 500W power supply". I took some photos. See that post. i How about a light duty arc welder for the transformer, and a full wave bridge rectifier? *** Posted via a free Usenet account from http://www.teranews.com *** |
#7
Posted to rec.crafts.metalworking
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Power supply for wheelchair motor?
mlcorson wrote:
I recently dumpster dove for a couple of 24 volt 400-600 (estimated) Watt, 3000rpm motors with controller off a Ranger II (1999) wheel chair. They each have a gear box that should be either 18:1 or 24:1. Would these be good for converting to a variable speed drill press? I need a power source as these ran off 2 12v car size batteries. I haven't been able to determine the exact specs of the motors as the manufacturer is not cooperating, Ha Ha. Been there. My mom had a stroke and was begging the kids for a powerchair. Medicare wouldn't cover it because she could still sorta drag herself around. I ended up buying a used Jazzy powerchair from a private party, cleaning it up and re-batterying it. Jazzy/Pride Mobility was totally useless. Any question was replied with "ask your provider". and the motors have a minimal amount of information. Any suggestions on obtaining a reasonably priced power source? How many amps? The Jazzy used 2x 12 volt 85 ampere/hr gel or wet lead acid cells in series. From what I could find on the powerchair forums, a Jazzy with good batteries would take you 10-15 miles on one charge with a little bit left in the bank. New gel cells will run about $130 each at discount. Wet cells will run a little over half that. I think the best uses of the motors would be either an electric bike or a battlebot. |
#8
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Power supply for wheelchair motor?
" From what I could find
on the powerchair forums, a Jazzy with good batteries would take you 10-15 miles on one charge with a little bit left in the bank. " Where are these "power chair forums"? TMT |
#9
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Power supply for wheelchair motor?
I've made a tracer for a lathe using a car wiper motor and more recently
a vibrating table for refractory castable material like concrete using a car cooling fan motor, both these were 12V and used occasionally for short periods so I just ran them off the 12V car battery. The wiper motor would run off a 12V power supply I made but as the use was occasional it was easier to charge a battery and use that as the supply. The same was true of the vibrator, it would run for a couple of minutes before tripping a 10 amp battery charger but was just easier to use off a battery and use the charger to charge it. So far as a recent project the vibrating table has been used to cast a 39kg glass furnace gathering port which probably required running the table for about 15 minutes, the 44 Ahr car battery seemed fine. mlcorson wrote: I recently dumpster dove for a couple of 24 volt 400-600 (estimated) Watt, 3000rpm motors with controller off a Ranger II (1999) wheel chair. They each have a gear box that should be either 18:1 or 24:1. Would these be good for converting to a variable speed drill press? I need a power source as these ran off 2 12v car size batteries. I haven't been able to determine the exact specs of the motors as the manufacturer is not cooperating, and the motors have a minimal amount of information. Any suggestions on obtaining a reasonably priced power source? How many amps? -Mike |
#10
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Power supply for wheelchair motor?
Sell:
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