snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jan 2, 2010 13:22:03 GMT -5
Happy New Year everybody. Several months ago I posted about aflat lap made from this motor. I put it aside and thought maybe I'd start the year out trying again to figure this out . I am not to bright when it comes to some mechanical engineering processes. I need all the help and ideas yall have out there. This pully assembly is all in one piece,the pulley end is 1-1/8 inches in diameter. Isn't this assembly necessary for cooling the motor? The motor is one hp variable speed. I am wanting something to attach to the pulley with a shaftfor the lap.
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Jan 2, 2010 23:47:02 GMT -5
It's good to see ya dig this project back out Snuffy! By the looks of it, I'd say that's a flywheel, besides being a pulley. It's pretty heavy looking, and would help keep the motor spinning under load. It must run a serpentine belt like used on most cars? Is there an ID plate somewhere on the motor to see if it's continuous duty or not? Being from a treadmill I would assume it is, but I'm no engineer either, so don't take my word for it.
Nate
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Post by Woodyrock on Jan 2, 2010 23:50:57 GMT -5
/snuffy: Just looking at the photograph, it looks like you have a flywheel/fan with a threaded boss to take a pulley. If you can use the original pulley, that would make life easier. However, if you do not have this pulley, you might be able to cut the threaded boss off, and replace it with a pulley. It the flywheel/fan is predded on, you only have the option of using a pulley made for it. Woody
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snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jan 3, 2010 9:33:42 GMT -5
This is a continuos duty motor. The flywheel and pulley is one solid piece,used a serpentine belt to turn the roller on the machine. I had originally planned to run a belt to a unit, but thought maybe this could be converted on this motor. Apparently my best option would be to go with my original plan. Thanks.
snuffy
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Jan 3, 2010 23:26:23 GMT -5
Snuffy, here's my thoughts on this. Being a continuous duty motor with a speed control makes the rest easy. remove the flywheel/pulley (a gear puller should do the trick if it's pressed on) and mount the arbor. Build a frame to hold it all and you're done. I really like this idea and might try it myself. I'd love to be able to control the speed on my lap.
In any event, please keep us posted on how you work this out.
Thanks, Nate
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joemojave
starting to spend too much on rocks
Member since October 2009
Posts: 133
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Post by joemojave on Jan 4, 2010 1:09:56 GMT -5
Well, they say that simplicity is the largest element of design, and I would say that for the non mechanicaly enlined the best method might just be to use the flywheel as a platten of your laps. IME using a faceting lap any lap heavier than a couple pounds will not slip against your platten, so if you use cast iron or plate steel laps you should not need a retaining nut. The only problems that I can forsee are that
A.) the motor may not be slow enough for direct drive
B.)If you put a lot of pressure on the lap it may ruin the motor bearings.
C.)this method requires the laps to be precisely machined to fit the diameter of the pulley.
B could be solved using castors, like the setups used by lathe turners for very heavy vase blanks, or by not pushing to hard on the lap. C is only a problem if you want to make your own laps, as you can have the holes drilled and reamed properly at any machine shop for just a few bucks.
There are better solutions, such as pulling the flywheel and using a rubber cone type friction drive to gear down the motor, but the easiest method for the non-engineering-minded individual would probably be to just stick a lap on it, as described above.
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NDK
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Posts: 9,440
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Post by NDK on Jan 15, 2010 22:25:49 GMT -5
Snuffy, any progress on this?
Nate
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snuffy
Cave Dweller
Member since May 2009
Posts: 4,319
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Post by snuffy on Jan 15, 2010 22:40:45 GMT -5
Nate, I think about it off and on. Looks like I need to get an automotive pulley and a serpentine belt and run it off this motor. It's been cold and nasty here, I've been lazy,and Igot my Gryphon Twister in.lol Maybe one of these days.....
snuffy
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NDK
Cave Dweller
Member since January 2009
Posts: 9,440
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Post by NDK on Jan 16, 2010 21:27:58 GMT -5
LOL, I know what you're saying. I haven't had a day off for quite a while (and won't til the 23rd), coupled with frigid weather here I haven't done much either. Now we have a "warm snap" here (highs in the mid 30's) the last few days, so I'm forcing myself to do some cutting/cabbing. Got a few slabs cut last night I need to post.
Good luck with the build.
Nate
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