IaNerd
27 posts
Feb 03, 2018
12:49 PM
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QUESTIONS:
1. Have you joined two harps, in an over-under fashion, using magnets such as neodynium?
2. What size/shape/strength of magnet works well?
3. How do you get the angle and distance between the two harps "just right"?
4. Any issues with the magnets scratching the cover plates? Are the magnets in direct contact with the cover plates?
5. Are some metal cover plates not attracted by such magnets?
6. Can Seydel's steel reeds be affected by such a setup?
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shakeylee
727 posts
Feb 03, 2018
1:05 PM
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I often use a duo harp from rockin Ron’s
----------https://www.rockinronsmusicsd.com/duoharp-kwik-change.html
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www.shakeylee.com
Last Edited by shakeylee on Feb 03, 2018 1:07 PM
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IaNerd
28 posts
Feb 03, 2018
1:40 PM
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Thanks, shakeylee. Your post led me to this: http://www.patmissin.com/reviews/kwikchange.html
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nacoran
9729 posts
Feb 03, 2018
5:19 PM
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I've experimented with magnets to hold on the covers. The only problem I had was the magnets tended to pull cling to everything, sometimes pulling the covers off. For holding two harps together, as long as the covers are magnetic (most models are) they should work fine.
You can get covered magnets- rubber or felt or whatever. Rubber would be hygienic and prevent any scratching. As for size, a couple ones about the size of a penny would work fine if they are the neodymium ones. My neodymiums are in a box somewhere right now, but I pulled a standard rectangle ceramic magnet off my fridge. It holds them okay. It's rated for about 3 lbs. of lift. If you hold one and shake your arm you can get it to fly off, but you have to try a little. You might want something a little (but not a lot) stronger.
Magnets are cheap and fun though. I get mine from Supermagnetman. He has a huge selection. K&J also has a great selection and they have this handy pull force calculator.
https://www.kjmagnetics.com/calculator.asp?calcType=block
https://supermagnetman.com/collections/neo-discs?page=5
One thing to remember with smaller magnets... they aren't little kid friendly, especially in pairs. Anything small enough a kid can swallow can be trouble. Kids will eat two and then the magnets will pinch part of the intestines off and require surgery! When I played with them for holding covers on I hard mounted them inside the comb.
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Nate
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First Post- May 8, 2009
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Flbl
97 posts
Feb 04, 2018
2:12 PM
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Nice idea for fast changes, think I would stay away from Seydel harps with stainless reeds though, a Seydel session steel is used by Turbo Harp as a base for a harp that the reeds can be manipulated with magnets.hhjebk
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dougharps
1708 posts
Feb 04, 2018
2:33 PM
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I just stack them between my fingers if I need 2 harps (or 3, or even 4 on one occasion a while ago).
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Doug S.
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jbone
2478 posts
Feb 04, 2018
7:04 PM
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I had a gadget that screwed onto an SM58 and held a harp with a magnet. Single harp only. It was cool but I didn't need it as it turned out.
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Reverbnation
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nacoran
9732 posts
Feb 04, 2018
10:35 PM
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Flbl, magnetic fields fall off very, very quickly. Just the distance from the cover to the reeds should be more than enough to keep the reeds from experiencing any noticeable effect. The Turboslides put the magnets virtually touching the reeds.
Another trick I've discovered for stacking harps, if it's going to be more permanent, take the top cover off the bottom one and the bottom cover off the top one, then take a third comb and stick it between them backwards and use some long screws to hold the whole thing together. Someday, when I have a full set of functioning backup harps all the same brand I'm going to make a 12 harp stack just to amuse people at shows.
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Nate
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Flbl
98 posts
Feb 06, 2018
7:54 AM
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Nate, you should understand when i was a kid i watched a lot of road runner cartoons, so when I think magnet I see a big horseshoe magnet squashing a cayote, your magnets may be smaller.
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nacoran
9739 posts
Feb 07, 2018
10:57 AM
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Flbl, horseshoe magnets are fun. We used to have the rectangle ones on our fridge though, as well as little ones glued into the back of letters so we could play with words on the fridge.
There is a nice horseshoe magnet (or at least was, it's been years) at the kid's science museum in Boston. You can throw small metal things like screws and nuts through the field and watch them veer off.
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Nate
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Flbl
101 posts
Feb 07, 2018
11:21 AM
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I just want to see a stack of 12 harmonicas, I want to know how do ya keep your nose from getting in the way.
Or if ya twist your head just right can you play one harp with the mouth and one with the nose?
Certainly something to see, lol.
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Belowzero
5 posts
Feb 07, 2018
2:04 PM
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I put an elastic band around them with a soft erasure in between.
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Philosofy
867 posts
Feb 07, 2018
3:26 PM
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I saw someone doing the magnet thing at SPAH this year. Here's what he used: (It was Filisko approved: we sat together trying them.)
https://www.amazon.com/Manic-Magnets-Powerful-Magnet-Neodymium/dp/B01IAFIVQQ/ref=sr_1_8?ie=UTF8&qid=1518045791&sr=8-8&keywords=rare+earth+bar+magnets
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