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Old 03-16-2012, 03:26 PM   #1
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Default BYO "motorize your mill" questions

I'm motorzing my mill using the instructions from: http://www.byo.com/component/resource/article/1171-motorize-your-grain-mill-projects

I have bought all the sheaves and have the motor, however when I went to mount the sheaves, the ID (Which is 1/2) is slightly smaller than the shaft. Are these supposed to be hammered on or should I drill it out?


Thanks in advance.

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Old 03-16-2012, 05:03 PM   #2
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You probably need to buy the proper sized sheave.

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Old 03-16-2012, 07:12 PM   #3
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Don't drill out the sheave - you'll unbalance it. Buy the correct size.

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Old 03-17-2012, 12:54 AM   #4
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Interesting. The spindle size is 1/2" and the sheave I'm trying to place on it, which was sold as 1/2" is a 32nd off. My next possibly size up is 5/8". I'm having a hard time believing it'll be more unbalanced if I used a drill press to take off the bare amount of material, vs going another 1/8" up, or am I missing something completely?

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Old 03-17-2012, 01:06 AM   #5
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Hamering them in worked just fine. I shouldn't have second guessed myself and just used the hydraulic press at work, would have been much quiter.

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Old 03-17-2012, 02:30 AM   #6
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yikes, try doing a direct drive, there are several builds on this site that have done the same - including mine. No big sheaves to worry about pinching points, loose belts and replacing them, etc.

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Old 03-17-2012, 03:30 AM   #7
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I would rather have done that. The motor was free, got the rest of the accessories were 30 dollars, and, most of the builds that reference a motor for a price comparable to that are no longer sold.

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Old 03-17-2012, 03:37 AM   #8
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Nice build btw. I also mounted the mill as far back into my support cabinet as possible, with the mill actually mounted underneath, reason being I want to be able to remove the hopper and have usable workspace, as I'm in tight quarters in the garage space I've allocated myself.

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