Prewitt Conversion Unit

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Prewitt Conversion Unit

Postby Stanton » Mon Jan 23, 2012 9:58 am

When I researched for the Grosshart/Prewitt Post Hole Digger article (Red Power Magazine, 2011 NOV/DEC issue), I was given a brochure showing the Prewitt Conversion Unit:

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Decided to hunt for one last week. Found a website listing the tractor salvage yards in Missouri with contact info. About 20 of them had emails. I sent emails on Friday and left work at noon. By the time I arrived home, a man who owns a tractor dealership in a nearby town had called/left a message. I called him back to discover that he not only had one, but he lives about 6 miles from me!

Came home with this on Saturday:

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No identifying marks on it except this (looks like the state of Missouri outlining an "M"):

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Pretty sure it is a Prewitt unit made in Pleasant Hill, MO during the '50s and '60s for use on a Farmall Cub and Grosshart Post Hole Digger. The man said it had been sitting in the tractor dealership's barn for over 30 years. Probably came on a trade-in and since it wasn't IH original equipment, was removed and shelved.

It was a good weekend.

This was the missing piece... :D
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Re: Prewitt Conversion Unit

Postby BigMatt » Mon Jan 23, 2012 10:02 am

Congrats on a great find! I am interested to see what implements you find that you can run with this unit installed.

Keep us posted!
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Re: Prewitt Conversion Unit

Postby RaymondDurban » Mon Jan 23, 2012 10:09 am

Great find! Now we need pics of it in use!! :D
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Re: Prewitt Conversion Unit

Postby John *.?-!.* cub owner » Mon Jan 23, 2012 11:19 am

Looks like you did good. Don't know what you gave for it, but they normally sell in the $500 to $1000 range.
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Re: Prewitt Conversion Unit

Postby Dusty B » Tue Jan 24, 2012 9:49 am

Have this one hanging on my wall - neighbor was cleaning out his shed. Had gotten it 25 years ago when he had a cub and was going to run a generator unit. Gave it to me in exchange for some work. Really never checked to see what brand it was?
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Re: Prewitt Conversion Unit

Postby Bob McCarty » Tue Jan 24, 2012 10:14 am

Dusty, Yours' looks like it's a Hub City. Also highly in demand.

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Re: Prewitt Conversion Unit

Postby Redcub » Fri Jan 27, 2012 2:26 pm

Thats the same Hub City model 22 that I have. Hang on to it!
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Re: Prewitt Conversion Unit

Postby 'Country' Elliott » Fri Jan 27, 2012 3:43 pm

Hey Stanton...Very Nice Find :D I would guess you'll be out looking for that post hole digger to complete your setup :wink: Good things happen to folks who seek knowledge :wink: ...'Country'
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Re: Prewitt Conversion Unit

Postby Stanton » Mon Jan 30, 2012 7:30 am

'Country' Elliott wrote:Hey Stanton...Very Nice Find :D I would guess you'll be out looking for that post hole digger to complete your setup :wink: Good things happen to folks who seek knowledge :wink: ...'Country'


Well, I'm not exactly "looking for that post hole digger." Already have one heading my way (in a month or so)... :D
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Re: Prewitt Conversion Unit

Postby Buzzard Wing » Mon Jan 30, 2012 9:12 am

Wow, nice find! Perseverance does pay off.
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Re: Prewitt Conversion Unit

Postby Wakulla Bill » Tue Jan 31, 2012 11:26 pm

Did any manufacturer other than Prewitt and Hub City build these conversion units for the Cub?
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Re: Prewitt Conversion Unit

Postby Stanton » Wed Feb 01, 2012 11:03 am

ctdnwakulla wrote:Did any manufacturer other than Prewitt and Hub City build these conversion units for the Cub?
Thanks Bill


I know that Prewitt built their conversion unit specifically for the Farmall Cub; don't know about Hub City or anyone else.
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Tractors Owned: 1947 Farmall Circle Cub, serial #2116
1948 Farmall Cub, serial #46066
1949 Farmall Cub, serial #65937
Cub-54 Blade
Cub-193 Moldboard Plow
Cub No. 23-A Tractor Disc Harrow
Grosshart Post Hole Digger
Prewitt Conversion Unit
McCormick-Deering No 100 Manure Spreader
Cub-22 mower
1945 Farmall H, serial #213,651
CCC 782, serial #715729
IH #1 Cart
Circle of Safety Award
Circle of Safety: Y


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