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Post by pete1951 on Oct 16, 2020 14:07:12 GMT
The appearance of a possible Rickenbacker body on Tin Can Ally set me thinking about the fabled Horseshoe Pickups. I have had a quick look on the web but as yet have not found the perfect horseshoe magnet to make a similar pickup, albeit with just one horseshoe turned 90 degrees. The magnet also acts as the bridge, with 6 holes drilled through it. This is slightly similar to the first Fender ‘through string pickups ‘ where the magnet frame was also the bridge .  Any suggestions as to who could supply a magnet would be good Pete |
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Post by calvoi on Oct 16, 2020 15:28:21 GMT
Is there a chance that drilling the holes in the magnet might ruin (or at least dampen) the magnetic force exerted by the magnet?
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Post by pete1951 on Oct 16, 2020 16:29:39 GMT
Is there a chance that drilling the holes in the magnet might ruin (or at least dampen) the magnetic force exerted by the magnet? It may well effect the magnet, but hopefully if done slowly with minimal heat and vibration it will still have some power (it might be too powerful, I know little about magnets so it will be very much a ‘suck it and see’ experience) As the string is in the centre of the magnetic field the power should not effect sustain etc (I hope!) Pete |
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Post by chromatic on Oct 16, 2020 16:41:24 GMT
Ask the Steel Guitar Forum (USA) - there's a 'No pedals' forum and they know everything.
Cheers
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Post by mitchfit on Oct 16, 2020 18:22:02 GMT
have played with the same basic idea before.
while the only practical place to mount it would be right against the bridge, i wonder how a standard magnetic PUP configuration with the strings over it BUT between yet another PUP suspended above strings and aimed directly back toward same.
also, wonder if a natural polarity positioning would create a different signature than a forced repelling of magnetic fields?
either way, sustain/vibration shouldn't be dampened?
while another wild idea may be to use a dairyman's magnet for the bridge and mount a PUP far enough away to nullify magnetic interference between them, yet close enough to alter string inductance.
but no, can't help with a horse shoe magnet as wide as bridge string spacing in reasonable weights.
mitchfit
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Post by pete1951 on Oct 16, 2020 21:34:09 GMT
have played with the same basic idea before. while the only practical place to mount it would be right against the bridge, i wonder how a standard magnetic PUP configuration with the strings over it BUT between yet another PUP suspended above strings and aimed directly back toward same. mitchfit We’re you thinking of something like this?  With a reverse wind it would form a hum-cancelling pickup, and if the coils were asymmetric you could get 4 different tones for this setup Pete |
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Post by mitchfit on Oct 17, 2020 3:35:00 GMT
must admit your version is more elaborate than what was envisioned. had just schemed on 2 standard single coils mounted on non-magnetic framework that spans strings next to and parallel with bridge.
guess that's why your drawing has four different tones possible?
please expand on how this would be done. sounds intriguing.
mitchfit
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Post by leeophonic on Oct 17, 2020 7:11:49 GMT
It would be easier to recreate the supro strings through pickup with metal above and below the pickup and magnets either side holding it all together, but I do like your thinking, find a flat bar have it drilled and then bent and magnatized is my guess but I am no engineer, electro magnetic field expert also required so you may need to hang around old school power stations or nuclear power plants to find the expertise and materials. Alternatively there are people currently making horseshoe pickups, Rick Turner and Jason Lollar (under the counter).
Lee
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Post by pete1951 on Oct 17, 2020 8:10:29 GMT
4 sounds from 2 coils ( if the coils are asymmetric) . 1 ) coil A . 2) coil B . 3) A+B in series. 4 ) A+B parallel.
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Post by pete1951 on Oct 17, 2020 9:07:29 GMT
Ask the Steel Guitar Forum (USA) - there's a 'No pedals' forum and they know everything. Cheers Have had a look and now need to save up $5 to pay the joining fee. Lots of interesting stuff but I barely have time for one forum! |
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Post by chromatic on Oct 17, 2020 10:12:27 GMT
It's an excellent forum and, just like MM's, the depth of knowledge is astounding.
For the intrepid, there's the parallel universe of pedal steel...
Cheers
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Post by Bob Stockton on Oct 20, 2020 15:32:37 GMT
Are the string holes in the magnet the bridge?
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Post by pete1951 on Oct 20, 2020 18:55:46 GMT
Are the string holes in the magnet the bridge? Yes they are, the first Fender pickups used the steel frame that channeled the magnetism to the strings as the bridge, I have made one and like the sound of it. There are several different ways of getting the magnet to ‘flow’ through the strings and the coil and I don’t think that they have all been tried yet! ( at least not by me) Here is a cutaway drawing of my pickup  And here is the pickup on the guitar  The steel frame acts a little like the horseshoe magnet, but the coil is around the strings rather than under Pete |
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