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Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 8:35 am
by Moonie Man
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I have got an old Ric Horseshoe Pickup assembly for 8 String Lap Steel in recent and I have planned to replacing it for my RM 1999 reissue Bass.
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The 8 pole pieces are O.K., but Lap Steel bobbin was too tall for the Bass...so, I decided to remaking the Horseshoe Bass bobbin by myself.

I have trying to remaking an early '60s style Bass bobbin look alike.
I have choose Bakelite for bobbin material.

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1. Cut and fabricate the three parts from Bakelite blank sheets.
The bobbin construction is two of flatworks(top & bottom) and one of center piece.

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2. Joining together the three parts bonded by Epoxy.
I have pre-set the coil winding spacing gap is 1/4" wide(height).

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3. Drilling the holes for four of pole-pieces and two of bobbin mounting screws, two of small holes for coil wiring route.

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4. Tapping the threads.

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5. Screw-in the pole-piece screws to the bobbin(attaching the glue).
Pre-set the pole-piece head top height to 10" radius.
I use Fillister head screws for the pole-pieces.
Yes, these are just same as famous Humbucker's.

6. And, cut the end of the pole-piece screws flush to bottom surface of the bobbin.

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7. Finish - Ready to winding!

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This is my first trial job.
Don't you feel good result I have done this?

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 9:30 am
by teeder
It looks great from here!

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 9:50 am
by Seans
Looks great from here too, subscribed....

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 10:20 am
by jps
Really nice work, Koji! 8)

How much room do you have now between the underside of the shoes and the top of the pole pieces?

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 10:34 am
by cjj
Very nice work! Looks like a fun project! It will be interesting to see how it progresses and how the pickup ends up working...
8) 8) 8)

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 10:37 am
by chrisdski
Very nice. Looking forward to seeing the completed project.

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 11:03 am
by Moonie Man
Thank you everyone.

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Jeffrey, between the underside of the shoes and the top of the pole pieces is 9/16" at my bobbin.
(Flatwork thicknes: 2mm x 2 + coil winding space height: 1/4" + polepiece head height: 3/16" = 9/16")

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 11:04 am
by BAD RONBO, KiLLeR DWaRfS
great work ! you may even have room to counter sink those screw heads into the coil form for more room between the magnets and strings.

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 11:29 am
by T.A.R.
That looks great Koji I can't wait to hear how it sounds!

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 12:20 pm
by Moonie Man
Now I am in preparation for winding the coil to my bobbin.
Yes, I am going to do all by myself to complete this project. :)

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Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 1:03 pm
by marcinkus
GREAT work!! My compliments :wink:

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 1:38 pm
by xsubs
Nice job Koji!
With the proper wire and turns it will sound super!
I had Sergio make one for me, complete with the proper lip, for my old CS bass. It's wound to ~7K, and sounds wonderful... with the cap, of course ;-)
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Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 1:42 pm
by demon666
Nice job!

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 7:08 pm
by jps
Moonie Man wrote:Thank you everyone.

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Jeffrey, between the underside of the shoes and the top of the pole pieces is 9/16" at my bobbin.
(Flatwork thicknes: 2mm x 2 + coil winding space height: 1/4" + polepiece head height: 3/16" = 9/16")
This photo shows exactly what I wanted to see. 8) You do have room for some height adjustment range.

What a wonderful project, Koji. :D

Re: Remaking The Horseshoe Bass Bobbin

Posted: Thu Mar 01, 2012 7:57 pm
by PJRL
That looks great and very well done !

Are there US / or other winders making those picks as Ric replacements ?