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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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Pulley for treadmill motor question
I already googled and came up empty.
I have a 2.5HP DC motor and controller that I want to put on my drill press but I can't find a pulley to fit it. The shaft is 17MM (0.669") by 1" length with an additional section 1/2-13 LHT on the end. The original treadmill pulley/flywheel takes a flat ribbed belt which I can't adapt to the DP. So what to do? Does anyone know of a source for a V-belt(4L) pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Any suggestions or ideas on how to solve this are welcome. Art |
#2
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Pulley for treadmill motor question
On Mon, 29 Oct 2007 17:13:22 -0800, "Artemus"
wrote: I already googled and came up empty. I have a 2.5HP DC motor and controller that I want to put on my drill press but I can't find a pulley to fit it. The shaft is 17MM (0.669") by 1" length with an additional section 1/2-13 LHT on the end. The original treadmill pulley/flywheel takes a flat ribbed belt which I can't adapt to the DP. So what to do? Does anyone know of a source for a V-belt(4L) pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Any suggestions or ideas on how to solve this are welcome. Art Bore or ream pully to fit shaft. -- Posted via a free Usenet account from http://www.teranews.com |
#3
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Pulley for treadmill motor question
pulley with a 17MM bore? Alternatively would turning the shaft down
to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Do you owna lathe? Easy job to bore a pulley on the lathe. Don't even think about working on the motor shaft. Karl |
#4
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Pulley for treadmill motor question
actually, if you own a lathe, you could machine the pulley to accept a V
belt "Karl Townsend" wrote in message anews.com... pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Do you owna lathe? Easy job to bore a pulley on the lathe. Don't even think about working on the motor shaft. Karl -- Posted via a free Usenet account from http://www.teranews.com |
#5
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Pulley for treadmill motor question
Artemus writes:
So what to do? If the stock pulley bore is too big, you make a collar on a lathe (example: http://www.truetex.com/dcdrv.htm). If the stock pulley bore is too small, you enlarge it on a lathe. And if just right, then like Goldilocks, you are happy. |
#6
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Pulley for treadmill motor question
I don't own a lathe nor do I know anyone in the Portland OR area with
one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Art "Karl Townsend" wrote in message anews.com... pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Do you owna lathe? Easy job to bore a pulley on the lathe. Don't even think about working on the motor shaft. Karl |
#7
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Pulley for treadmill motor question
Oops. Make that 0.672.
"Artemus" wrote in message ... I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Art "Karl Townsend" wrote in message anews.com... pulley with a 17MM bore? Alternatively would turning the shaft down to 5/8 be feasible? Or maybe boring out a 5/8 pulley? Do you owna lathe? Easy job to bore a pulley on the lathe. Don't even think about working on the motor shaft. Karl |
#8
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Pulley for treadmill motor question
Artemus wrote:
I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Don't do it. Find a lathe and do it right. Or find a local hobby machinist and spring for a 6-pack of his choice. |
#9
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Pulley for treadmill motor question
"Rex" wrote in message ... Artemus wrote: I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Don't do it. Find a lathe and do it right. Or find a local hobby machinist and spring for a 6-pack of his choice. Yes to what Rex says. A drilled hole will not be very round (they're trilobal, but don't worry about it), and it will be oversize. It will have other problems. That's why we use a drill to make a rough hole and a boring tool or a reamer to finish it. A boring tool on a lathe is best. -- Ed Huntress |
#10
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Pulley for treadmill motor question
Ed Huntress wrote:
"Rex" wrote in message ... Artemus wrote: I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Don't do it. Find a lathe and do it right. Or find a local hobby machinist and spring for a 6-pack of his choice. Yes to what Rex says. A drilled hole will not be very round (they're trilobal, but don't worry about it), and it will be oversize. It will have other problems. That's why we use a drill to make a rough hole and a boring tool or a reamer to finish it. A boring tool on a lathe is best. Dang, I wish I had this many choices in used machines as the OP does in Portland! http://portland.craigslist.org/search/sss?query=lathe Contact one of these guys and see if he'll do you a quicky Or buy a lathe. Some of these look like pretty good deals. |
#11
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Pulley for treadmill motor question
Thanks guys.
A lathe it is. Art "Rex" wrote in message ... Ed Huntress wrote: "Rex" wrote in message ... Artemus wrote: I don't own a lathe nor do I know anyone in the Portland OR area with one. I did find a 43/64 drill bit at my hardware store which is 0.472 or about 3 thou over. Is it feasible to use it and then use shim stock to take up the difference? Or am I just begging for a wobbly pulley? Don't do it. Find a lathe and do it right. Or find a local hobby machinist and spring for a 6-pack of his choice. Yes to what Rex says. A drilled hole will not be very round (they're trilobal, but don't worry about it), and it will be oversize. It will have other problems. That's why we use a drill to make a rough hole and a boring tool or a reamer to finish it. A boring tool on a lathe is best. Dang, I wish I had this many choices in used machines as the OP does in Portland! http://portland.craigslist.org/search/sss?query=lathe Contact one of these guys and see if he'll do you a quicky Or buy a lathe. Some of these look like pretty good deals. |
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