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  • 2 Post By woods223
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Thread: magnetic damping

  1. 29-10-2023, 04:20 PM #1
    blip
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    magnetic damping

    Cold windy shitty day up here but the mind is still working. Anyone tried magnetic damping the old lee balance beam scales? Got a set here and it might be worth looking into...
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  3. 29-10-2023, 04:42 PM #2
    Marty Henry
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    You need to generate Eddy currents in the magnetic field between the two magnets for it to work. So unless the beans either copper, steel or aluminum it won't work
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  4. 29-10-2023, 04:49 PM #3
    blip
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    It has an aluminum tang on the end of the beam
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  5. 29-10-2023, 04:52 PM #4
    Marty Henry
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    That may work, later I'll dig out my ohaus and take a photo
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  6. 29-10-2023, 05:20 PM #5
    woods223
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    Lee scale has two magnets either side of beam pointer end. Common for people to swap out for stronger ones or simply put a small penny type magnet on bench below pan, it seems to work reliably/accurately.
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  7. 30-10-2023, 07:54 AM #6
    Marty Henry
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    A few closeups
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  8. 30-10-2023, 10:02 AM #7
    Jhon
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    Apparently current Lee Perfect scales don't ship with magnetic dampening. I have two disc magnets the size of old 50c pieces with holes in middle from Mitre10 which cling to the housing on the off-side of the pointer. So there must be some ferrous metal in there or maybe weak magnets after all..anyhow mine work perfectly (pun intended) with the two stacked magnets on the side of the housing
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    I know a lot but it seems less every day...
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  9. 30-10-2023, 10:29 AM #8
    Marty Henry
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    That seems a simple fix those rare earth magnets are really something
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  10. 30-10-2023, 10:33 AM #9
    Oldbloke
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    Quote Originally Posted by woods223 View Post
    Lee scale has two magnets either side of beam pointer end. Common for people to swap out for stronger ones or simply put a small penny type magnet on bench below pan, it seems to work reliably/accurately.
    Yes, you can add stronger magnets. Speeds up the process but no effect on accuracy.
    Jhon likes this.
    Hunt safe, look after the bush & plug more pests. The greatest invention in the history of man is beer.
    https://youtu.be/2v3QrUvYj-Y
    A bit more bang is better.
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  11. 03-11-2023, 08:19 PM #10
    blip
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    I took the crappy magnets out of my scales which were useless anyway and got a couple of rare earth magnets and put them in them also found a 40mm round magnet at work that I sit under the pan. They are really good now.
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  12. 04-11-2023, 12:59 AM #11
    Oldbloke
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    Quote Originally Posted by blip View Post
    I took the crappy magnets out of my scales which were useless anyway and got a couple of rare earth magnets and put them in them also found a 40mm round magnet at work that I sit under the pan. They are really good now.
    Got a mate did exactly what you did and happy with the scales too. GMF why Lee dont do the same.
    Hunt safe, look after the bush & plug more pests. The greatest invention in the history of man is beer.
    https://youtu.be/2v3QrUvYj-Y
    A bit more bang is better.
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