FDD head shield

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pelago
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FDD head shield

Post by pelago » Tue Dec 18, 2018 10:38 pm

I opened up an old 5.25 floppy disc drive and noticed the part pictured had fallen off. It's a sort of metal shield to the read/write head. Looks like the black foam pad holding it on has perished a bit.

I can stick it back on, but is the pad supposed to be electrically or heat conductive?
DSC_1373.JPG
Below is it lightly put in place so you can see where it came from.
DSC_1372.JPG

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SimonSideburns
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Re: FDD head shield

Post by SimonSideburns » Tue Dec 18, 2018 11:35 pm

I guess they had some usefulness otherwise why would they have been there, but when I opened a set of twin drives that had these to find them in a similar way to yours I was able to remove them and the drives have been fine ever since.

Hope that helps.
Just remember kids, Beeb spelled backwards is Beeb!

pelago
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Re: FDD head shield

Post by pelago » Wed Dec 19, 2018 10:22 am

Using a DMM, it certainly doesn't seem to be electrically conductive. I can't imagine it will be heat conductive either - looks too holey. I'll see if I can scrape the old stuff off and use a generic double-sided sticky pad to put it back on.

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geraldholdsworth
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Re: FDD head shield

Post by geraldholdsworth » Wed Dec 19, 2018 10:34 am

Take a peek at my thread:
viewtopic.php?f=3&t=16036&p=220469#p220469
plus there are a few others, in a similar vein, going back a few years asking the same question.
Gerald Holdsworth
Repton Resource Page
www.reptonresourcepage.co.uk

pelago
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Re: FDD head shield

Post by pelago » Wed Dec 19, 2018 10:46 am

Thanks. Looks like some people say it works fine without it, whereas others say it adds weight to the head and works better with it. I'll stick it back on.

pelago
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Re: FDD head shield

Post by pelago » Wed Dec 19, 2018 2:10 pm

Presumably it's not just to add weight, but to shield RF too.

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