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Old 02-02-2013, 10:27 PM   #11
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You can get different lovejoy ends up to a point where the shaft sizes are to extreme.


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Old 02-02-2013, 10:52 PM   #12
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Originally Posted by ThreeGnomes View Post
Brew n Que.. Looking at the Lovejoy couplings you have. Can you buy them with different end diameters? IOW, If the pump is 1/2" and the crusher has a 3/8 shaft, do you have to buy two separate units or can they be purchased "mix n match"???
I have been all over where you are going with my MM3-2.0.

I started with a 1.5" shieve and 10" pulley on the mill. It slipped a lot so I switched to a 12" pully. That worked pretty well but would slip occasionally with a high percentage of wheat. It would also not start with grain in the hopper.

I recently switched over to a 15:1 worm drive speed reducer. It works flawlessly with my dayton 1/2 hp, 1725 rpm motor. I can load the hopper with whatever I want and flip the switch and watch it chew through the grain. I love it!

Here is the speed reducer I used:
http://www.surpluscenter.com/item.as...ame=powerTrans

Call Grainger for the proper coulpers and spider inserts. Their tech support is amazing at getting you the right products.


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Old 02-02-2013, 11:47 PM   #13
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Default Grain mill

This is what I built . Direct Drive to prevent side load on the bearings. With the grain in the hopper it slows down to 250 to 300 rpms.
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Old 02-03-2013, 11:36 AM   #14
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Originally Posted by ThreeGnomes View Post
Brew n Que.. Looking at the Lovejoy couplings you have. Can you buy them with different end diameters? IOW, If the pump is 1/2" and the crusher has a 3/8 shaft, do you have to buy two separate units or can they be purchased "mix n match"???

Yes, you can buy them mix n match.....I picked mine up as a set on ebay for about $12 from seller "carolbrent" AKA Hubbard CNC


*edit for clarity*
The couplers I used are the "L" type, in the "070" size
Lovejoy couplers are sold in a variety of sizes. Each size is available with a variety of bore diameters (in the size we are interested in, bore diameter ranges from 1/4" - 5/8")

Link to product catalog page
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Old 02-03-2013, 11:55 AM   #15
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Bill,
I foud a 750 watt sewing machine surplus supplier on Ebay who would make an excelent power source for your mill. The link is: http://www.ebay.com/itm/140895554335...84.m1497.l2649 . Hope this helps get you set up and rubbing..
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Old 02-03-2013, 12:22 PM   #16
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Originally Posted by ThreeGnomes View Post
Looking at the Lovejoy couplings you have. Can you buy them with different end diameters?
Made my own 3/8" to 1/2" coupling. Got the idea from a ratchet drive swivel. The center drive pin floats on 90 degree opposed dowel pins.
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Old 02-03-2013, 03:01 PM   #17
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Originally Posted by brew-n-que View Post
Yes, you can buy them mix n match.....I picked mine up as a set on ebay for about $12 from seller "carolbrent" AKA Hubbard CNC
Mix and match is a misleading way to describe love joy couplers.

The face diameter can vary and they need to be the same in order to mate up properly.

I encourage you to edit your post for future readers.
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Old 02-03-2013, 03:12 PM   #18
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Jammin.. I guess you are correct.. technically. What I meant by mix n match was to have the same type/model coupler.. but have, say 1/2" shaft size on one side and 3/8" on the other end.. but, I'll bet you knew that. Be nice to be able to do it without having to find a bushing of some sort.
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Old 02-03-2013, 04:19 PM   #19
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^you won't need any bushings, you can mate a 1/2" shaft to a 5/8" etc... You won't have any trouble putting your kit together.

You just need to make sure all couplers have the same face diameter as they are sold in different sizes. Personally, I called grainger and a technician was extremely helpful in selecting the correct couplers that would all fit. I just told him what size shafts I was connecting. Well worth the phone call.
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Old 02-04-2013, 06:21 PM   #20
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^you won't need any bushings, you can mate a 1/2" shaft to a 5/8" etc... You won't have any trouble putting your kit together.
While the set screw is probably long enough to make this work, I advise against this. If you put a 5/8" bore coupler on a 1/2" shaft, the center of rotation of the coupler will be offset by 1/8". Worst case it would bind, best case you would wear our your hub/spyder rather quickly.


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lupulin threshold shift \lu·pu·lin thresh·old shift\ n
1. When a once extraordinarily hoppy beer now seems pedestrian.
2. The phenomenon a person has when craving more bitterness in beer.
3. The long-term exposure to extremely hoppy beers; if excessive or prolonged, a habitual dependence on hops will occur.
4. When a "Double IPA" just is not enough.
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