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 Post subject: Create your own Crank? Columbia Grafonola C-2
PostPosted: Sat May 12, 2018 12:51 am 
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Victor Jr
Joined: Thu May 10, 2018 10:33 pm
Posts: 2
I recently acquired a Columbia Grafonola (C-2, I believe). I am an typewriter collector and somehow this has become the next avenue of my collecting, I think. Anyhow, I have this machine and it is missing the crank. I do not want to spend a huge amount on a replacement crank, and it is hard to tell if the cranks on eBay would work.

I need a female crank. Anyhow, this got me thinking ... could I get a ½" steel rod and drill and tap the correct thread?

Has anyone here done this? What are the chances I could find the right sized tap? Or, do I just suck it up and allow 50% of the machine cost to be an annoying crank. :-)

Thanks for your thoughts.


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 Post subject: Re: Create your own Crank? Columbia Grafonola C-2
PostPosted: Sat May 12, 2018 1:00 am 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5524
Location: Albany, Oregon
You could certainly make your own crank with a fair amount of effort. But I don't think an original would be a great deal on money. I have a box of cranks and if I had the correct crank you could have it for the cost of postage. If you are only after a functioning crank and enjoy the challenge go for it.

If you want an original crank, how far is it from the end of the shaft to the outside of the cabinet? Do you have a nut that threads to the shaft? I'd think your efforts are better spent finding the correct crank. My opinion...

Jerry Blais


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 Post subject: Re: Create your own Crank? Columbia Grafonola C-2
PostPosted: Sat May 12, 2018 1:13 am 
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Victor Jr
Joined: Thu May 10, 2018 10:33 pm
Posts: 2
Hi Jerry. The very tip of the threaded portion, as seen in the photo above, to the outside (including the brass-ish piece on the outside of the case is a little over 3 inches. Close to 3 ⅛ inch. If you took away the brass-ish piece it'd be very close to 3 inches. This is from the very tip of the threaded portion, connected to the shaft. There is no nut connected to the shaft, I presume when you mention shaft you are talking about the threaded crank-shaft. There is only what is seen in the above photo.

If you happened to have one laying in a box, that'd be extremely helpful. If not, I appreciate your willingness to be helpful.

I am looking forward to entering your world, the phonograph world.


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 Post subject: Re: Create your own Crank? Columbia Grafonola C-2
PostPosted: Wed May 16, 2018 12:04 pm 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5524
Location: Albany, Oregon
I went through my spare cranks and have over a dozen female cranks. I need to know the bolt that fits a Columbia female crank. Jerry Blais


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 Post subject: Re: Create your own Crank? Columbia Grafonola C-2
PostPosted: Wed May 16, 2018 8:08 pm 
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Victor VI
Joined: Tue Mar 23, 2010 7:00 pm
Posts: 3334
Location: Western, WA State
Your machine is not a C-2. A C-2 does not use a female crank, but a male one. The C-2 was made from 1918-21 or so. Looking at the motor and board, I'm thinking it is a Model 35 from about 1914-15. If you can show a picture of the whole machine, that would be helpful. The thread size is either 3/16 or ¼.
Harvey Kravitz


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 Post subject: Re: Create your own Crank? Columbia Grafonola C-2
PostPosted: Sat May 19, 2018 10:40 am 
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Victor Monarch Special
Stop for a visit when in Oregon.
Joined: Tue Feb 10, 2009 12:25 pm
Posts: 5524
Location: Albany, Oregon
I have about a dozen female cranks. I you have a nut that fits your winding shaft and could relay that information to me, I could try a variety of bolts to find a match. Jerry Blais


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