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  • Circlip thingy

    From Trevor Wilson@21:1/5 to All on Tue May 24 14:05:05 2022
    I have a Nakamichi Dragon on the bench. I need to dismantle the DD
    motor. To do so, I have to remove the circlip thingy (see photo: https://imgur.com/a/5pEwdVw ). It must be destroyed during removal,
    which means I need a replacement, after repair. The bearing is 13mm in diameter. Any ideas where one can be found. Oh, and what it is called
    would be nice too.

    TIA

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  • From Jeff Liebermann@21:1/5 to [email protected] on Mon May 23 23:03:45 2022
    On Tue, 24 May 2022 14:05:05 +1000, Trevor Wilson
    <[email protected]> wrote:

    I have a Nakamichi Dragon on the bench. I need to dismantle the DD
    motor. To do so, I have to remove the circlip thingy (see photo: >https://imgur.com/a/5pEwdVw ). It must be destroyed during removal,
    which means I need a replacement, after repair. The bearing is 13mm in >diameter. Any ideas where one can be found. Oh, and what it is called
    would be nice too.

    TIA

    It's called a "push on retaining ring". <https://www.google.com/search?q=push+on+retaining+rings&tbm=isch>
    If you're careful, it can be removed from the shaft by prying on each
    locking wing/prong in sequence. A bit tedious, but eventually it will
    slide off the end of the shaft.

    I couldn't find anything that exactly fits a 13mm dia shaft. The
    common metric sizes are for 12 and 14mm dia shafts. It might be an
    imperial size instead of meteric: <https://www.mcmaster.com/metric-snap-rings/retaining-ring-style~push-on/> <https://www.rotorclip.com/prod_self_lock_retaining_rings.php> <https://www.rotorclip.com/cat_pdfs/dtx.pdf> <https://www.huyett.com/products/fasteners/retaining-rings/push-on-rings>

    --
    Jeff Liebermann [email protected]
    PO Box 272 http://www.LearnByDestroying.com
    Ben Lomond CA 95005-0272
    Skype: JeffLiebermann AE6KS 831-336-2558

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  • From John Robertson@21:1/5 to Trevor Wilson on Mon May 23 22:44:37 2022
    On 2022/05/23 9:05 p.m., Trevor Wilson wrote:
    I have a Nakamichi Dragon on the bench. I need to dismantle the DD
    motor. To do so, I have to remove the circlip thingy (see photo: https://imgur.com/a/5pEwdVw ). It must be destroyed during removal,
    which means I need a replacement, after repair. The bearing is 13mm in diameter. Any ideas where one can be found. Oh, and what it is called
    would be nice too.

    TIA

    That is a type of Speed-Nut. Hunt around Mcmaster-Carr, and other
    hardware suppliers to find it- have the diameters handy!

    You may be able to remove it by using a two or three dental picks and
    carefully prying up a few of the teeth with the picks simultaneously.
    I've done it with just two hands but then I am ambidextrous. An extra
    pair of hands might help...

    John :-#)#

    --
    (Please post followups or tech inquiries to the USENET newsgroup)
    John's Jukes Ltd.
    MOVED to #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3
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    www.flippers.com
    "Old pinballers never die, they just flip out."

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  • From Clifford Heath@21:1/5 to Jeff Liebermann on Tue May 24 16:16:35 2022
    On 24/5/22 16:03, Jeff Liebermann wrote:
    On Tue, 24 May 2022 14:05:05 +1000, Trevor Wilson
    <[email protected]> wrote:

    I have a Nakamichi Dragon on the bench. I need to dismantle the DD
    motor. To do so, I have to remove the circlip thingy (see photo:
    https://imgur.com/a/5pEwdVw ). It must be destroyed during removal,
    which means I need a replacement, after repair. The bearing is 13mm in
    diameter. Any ideas where one can be found. Oh, and what it is called
    would be nice too.

    TIA

    It's called a "push on retaining ring". <https://www.google.com/search?q=push+on+retaining+rings&tbm=isch>
    If you're careful, it can be removed from the shaft by prying on each
    locking wing/prong in sequence. A bit tedious, but eventually it will
    slide off the end of the shaft.

    If you can rotate it o the shaft while prying on one point, it will come
    off quite easily.

    CH

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  • From [email protected]@21:1/5 to Trevor Wilson on Tue May 24 06:31:36 2022
    On Tuesday, May 24, 2022 at 12:05:09 AM UTC-4, Trevor Wilson wrote:
    I have a Nakamichi Dragon on the bench. I need to dismantle the DD
    motor. To do so, I have to remove the circlip thingy (see photo: https://imgur.com/a/5pEwdVw ). It must be destroyed during removal,
    which means I need a replacement, after repair. The bearing is 13mm in diameter. Any ideas where one can be found. Oh, and what it is called
    would be nice too.

    TIA

    Cut up a clear blister pack from any commercial product with a razor or X-Acto into very narrow slivers. Bend each of the 5 spokes up a bit with a dental pick and work a plastic sliver under each one. You should be able to walk the clip up from the
    shaft by rocking it.

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