I recently joined this group so if I am not following proper protocols let me know.
I recently purchased my father’s farm and was trying to identify his old windmill. I was unable to find any markings other than these attached in the pictures. Anyone familiar with these markings I would appreciate any information on what windmill manufacturer would have used them. Hard to read but markings are OK90 and OK11. They were located on the main arm area. Sorry for my lack of information/knowledge.
Need Help Identifying
Need Help Identifying
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Re: Need Help Identifying
Steve , welcome , if you post a photo of the complete motor , helmet , tail , fan , it will be easily identifyable , thanks . tower also .
Re: Need Help Identifying
Thank you. I will post more photos soon to help with the identification.
Re: Need Help Identifying
Challenge Co made an OK mill. Don't know if thats relatable, but yes, more pictures would help.
Call Dan Benjamin for parts. P M me for the phone number. IF YOU TALK TO HIM, AND HE HELPS YOU, THEN BUY FROM HIM. IT CREATES GOOD KARMA.
Re: Need Help Identifying
I think it was Challenge...Yes, I am questioning myself.
Call Dan Benjamin for parts. P M me for the phone number. IF YOU TALK TO HIM, AND HE HELPS YOU, THEN BUY FROM HIM. IT CREATES GOOD KARMA.
Re: Need Help Identifying
Windy , the mind is a terrable thing to waste ! 

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Re: Need Help Identifying
Looks similar to my Flint and Walling just different letters ahead of the numbers. Maybe indicating a different size mill.
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Re: Need Help Identifying
The Flint & Walling 8’ Steel Star direct stroke has those OK part #s.
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Re: Need Help Identifying
I think you might have a F and W model 13. More pics will help!!
Re: Need Help Identifying
I’m still leaning towards a F&W 8’ Steel Star direct stroke as the “crank wheel” is OK90 and the “lower guide” is OK11. If the main casting is OK1, I’d be convinced based upon a parts list, but additional photos would be helpful.
10’ parts prefix = AK
12’ = BK
14’ = C
16’ = D
10’ parts prefix = AK
12’ = BK
14’ = C
16’ = D
Last edited by CTXmiller on Wed Mar 12, 2025 5:31 pm, edited 1 time in total.