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Topic: ShoBud PU ground wire |
Tom Wolverton
From:
Carpinteria, CA
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Posted 12 Nov 2013 12:15 pm |
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On a single coil ShoBud pickup, the ground wire (black) is often connected to the anchor L-plate where the raise helper springs connect. Does this help ground the changer? Is this important to do, or can I skip running the ground wire to that bracket and simply go straight to the 1/4" jack?
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To write with a broken pencil is pointless. |
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James Morehead
From:
Prague, Oklahoma, USA - R.I.P.
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Posted 12 Nov 2013 1:45 pm
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Go under the bracket.
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"Good judgement comes from experience, and a lot of that comes from bad judgement"~old cowboy proverb.
shobud@windstream.net |
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Jim Palenscar
From:
Oceanside, Calif, USA
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Posted 13 Nov 2013 8:11 am
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| What James said. |
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Tom Wolverton
From:
Carpinteria, CA
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Posted 13 Nov 2013 9:14 am
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When you say "go under the bracket", do you mean make electrical connection there?
What about a 2nd ground wire that goes back to that bracket from the jack? I think it would still keep the grounding as a "tree" instead of creating a loop, which I hear can be noisier.
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To write with a broken pencil is pointless. |
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Jim Palenscar
From:
Oceanside, Calif, USA
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Posted 13 Nov 2013 9:26 am
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| Either way should work fine. |
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Jim Cooley
From:
The 'Ville, Texas, USA
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Posted 13 Nov 2013 11:29 am
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Tom,
When Jerry Wallace rewound my Sho-Bud single coil pickup he recommended that I ground to the changer or another solid metal part. He said that is better than going back under the anchor plate. |
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Tom Wolverton
From:
Carpinteria, CA
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Posted 13 Nov 2013 11:54 am
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Thanks to all for the advice.
Ideally, I think we would want to ground the changer fingers, not just the changer housing. So we need a good electrical path from the pickup ground wire to the changer fingers.
I figure there are 3 electrical paths:
1. thru the ¼” jack, to the changer case and thru the changer axel to the fingers.
2. thru the ¼” jack, to the changer case and thru the “lowering” springs to the fingers.
3. thru the spring anchor L-bracket, thru the “raise” springs to the fingers . (James and Jim’s suggestion)
None of these paths is that great, due to oil-film and grime causing contact resistance. The path needs all the help it can get. I’ll do the L-bracket ground, just as insurance.
I suspect that 90% of the time, none of this matters, as any of the 3 ground paths work just fine.
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To write with a broken pencil is pointless. |
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