Help needed restoring Bakelite Rick
Moderator: Brad Bechtel
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Lew Collins
- Posts: 41
- Joined: 9 Apr 2000 12:01 am
- Location: Boulder, Colorado, USA
Help needed restoring Bakelite Rick
1) I have a pre WW II Bakelite Rickenbacher I'm restoring and the 1 1/2"pickup seems to have lost some of it's magnetic charge.
Who repairs these and can remagnetize it? It's low in output but the coil seems fine. I'd like to measure it tho...anyone know what the output should measure with a multimeter?
2) Also, I need some old knobs that'll look right!
3) Anyone make repro tuners that'll look right too? Are the old ones Waverly?
Thanks! Lew
Who repairs these and can remagnetize it? It's low in output but the coil seems fine. I'd like to measure it tho...anyone know what the output should measure with a multimeter?
2) Also, I need some old knobs that'll look right!
3) Anyone make repro tuners that'll look right too? Are the old ones Waverly?
Thanks! Lew
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Bob Stone
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Jason Lollar
- Posts: 193
- Joined: 27 Feb 1999 1:01 am
- Location: Seattle area
The magnets on those are not really high pull especially after 50 years, the coil should be 6-7K, I have re-wound those without fussing with re-charging the magnets and they should have a lot of output anyway. You may have poor contact in the pots or connections from corrosion or dirt that is limiting output.
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Lew Collins
- Posts: 41
- Joined: 9 Apr 2000 12:01 am
- Location: Boulder, Colorado, USA
Thanks! You may be right...I opened her up last night and the pots, cap and wiring are all original but pretty shakey and barely connected. Most of the wiring is broken off and only a few strands of wire are still making contact. I think I'll start by cleaning up all the wiring and resoldering everything more neatly. I think I can reuse everything including the old wiring. Cool old bakelite Centralab pots...hope they work, cuz I'd hate to replace them. Thanks
again! Lew
again! Lew
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Jay Jessup
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Jason Lollar
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- Location: Seattle area
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Lew Collins
- Posts: 41
- Joined: 9 Apr 2000 12:01 am
- Location: Boulder, Colorado, USA
Thanks guys! I pretty much desoldered and removed all the old solder and then, using the original cloth covered wiring, resoldered every connection. Big help. The pickup has alot more "pickup" now. But the lowest string ("G" on mine...I use high G bluegrass tuning: GBDGBD)still has less volume than the others. So I loosened the mounting screws and moved the pickup over a bit to get the polepieces better centered under the strings. That improved things alot, but not enough. So I removed the pickup and actually loosened the screws holding the bobbin to the magnets and moved the bobben over about 1/32"...that's all the play I could get out of it without enlarging th screw holes. But it was enough to get the polepiece under the lowest string and now it's almost balanced with the other strings but still a little weak. If the polepieces on this pickup are little magnets, it would appear that the lowest one is a little weak. Now, if I could just get rid of some of the excess hum! I suspect a ground loop...which means one more round of desoldering. Unless there's a real, hidden problem, I think I'll be able to get it right this next time. I'll keep you posted....now, if I could just find some suitable tuning heads and knobs that look like the originals!
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Jason Lollar
- Posts: 193
- Joined: 27 Feb 1999 1:01 am
- Location: Seattle area
The poles are not magnets they are just slugs and the problem with that pickup is the outside poles should be repositioned but I wouldn't do that unless you want to risk re-winding it, it can be done but you are taking a chance. The coil is wound directly contacting the poles and you could short it out moving them. Best to adjust your string gauge and pickup height or have it done for you. Its a $50 dollar job if it needs to be rewound because of the dissassmbly time and construction details, the coil is bonded not waxed so its more time consuming to remove the old coil if needed. The bobbins are brittle too and could be broken if you fuss with it.
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Ray Montee (RIP)
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Lew Collins
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- Location: Boulder, Colorado, USA