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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On Tue, 24 May 2022 14:05:05 +1000, Trevor Wilson
<trevor@rageaudio.com.au> 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 jeffl@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558

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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
(604)872-5757 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."

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On 24/5/22 16:03, Jeff Liebermann wrote:

On Tue, 24 May 2022 14:05:05 +1000, Trevor Wilson
<trevor@rageaudio.com.au> 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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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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