BMW K bikes (Bricks)


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51Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Dec 02, 2012 6:40 pm

JR_K100RS


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Life time member
One for me too please !

Ta Ainsjac

JR

Melbourne Australia

    

52Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Dec 02, 2012 7:00 pm

klompy the grey brick

klompy the grey brick
VIP
VIP
[quote="JR_K100RS"]One for me too please !

Ta Ainsjac

Looks like a good excuse to go to Dubbo for a Pub car park maintenance day???

See you there ...



Last edited by Klompy the grey brick on Mon Dec 03, 2012 12:27 am; edited 2 times in total


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KKlompy Rear shock mount stud removal - Page 2 2854237993
"Grace" 1984 K100RS Silver VIN 0019026 Mitt eine Staintune Zorst.
"Olivia" 1997 K1100LT Dark Grey VIN WB1052600W0237453.









Chassis number0019026
Vehicle code0503
SeriesK589
ModelK 100 RS 83 (0502 ( 0503 )
Body typeK 100 RS 83 (0502
Catalog modelECE
Production date1984 / 07
Engine0513)

Rear shock mount stud removal - Page 2 Au-log10


    

53Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Mon Dec 03, 2012 2:35 am

col

col
Life time member
Life time member
stan

i am for 1

klompy

let me know if your going thru if not working will tag along


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1991 k100lt "the enterprise"
    

54Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Mon Dec 03, 2012 2:38 am

blaKey

avatar
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Life time member
Don't you guys keep spares?

Just curious. Is it a Southerner thing? Twisted Evil


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Neil
K100RS 1986 RED!

Dress for the ride and the potential slide.
    

55Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Mon Dec 03, 2012 2:48 am

col

col
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Life time member
we will just use yours if we need one should hpoefully get another at least 22 years or mor more out of the new ones they high tensile after all and the farmers fence worked well on the yellow peril ifn we do get stuck


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1991 k100lt "the enterprise"
    

56Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Mon Dec 03, 2012 3:36 am

rosskko

rosskko
VIP
VIP
Baaa
I'm a sheep. Follow the herd.
Yes please Stan. 1
When is the fitting day? Dubbo you say?
I hear it is nice ride up the Putty road to Denman then across to Dunedoo and Dubbo Smile


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1986 K100RT VIN 0093801K100RT with summer fairing for a northern visitor

Basic/2 6308802K100CJ  05/1988

K1100RS 0194321
    

57Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Thu Sep 23, 2021 4:33 am

bmwk100rs

bmwk100rs
Silver member
Silver member
RicK G wrote:The thread is 12mm x 1.5 pitch.
The red one is the correct one
Rear shock mount stud removal - Page 2 Bolt_h10

Sorry for reviving the old post, but this is good information. RicK G, Is the M12-1.5 stud coarse or fine thread?
Rear shock mount stud removal - Page 2 Coarse10

    

58Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Thu Sep 23, 2021 5:46 am

Dai

Dai
Life time member
Life time member
1.5mm pitch is standard pitch for an M12. This might be useful:-

https://fullerfasteners.com/tech/basic-metric-thread-chart-m1-m100-2/


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

59Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Sep 26, 2021 4:22 am

bmwk100rs

bmwk100rs
Silver member
Silver member
Dai wrote:1.5mm pitch is standard pitch for an M12. This might be useful:-

In the U.S., M12-1.5 coarse thread is NOT the standard pitch though.

    

60Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Sep 26, 2021 11:28 am

Laitch

Laitch
Life time member
Life time member
bmwk100rs wrote:In the U.S., M12-1.5 coarse thread is NOT the standard pitch though.
What's your source for that assertion, rs? Can you provide the link?


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1995 K75 90,000 miles
    

61Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Sep 26, 2021 2:55 pm

bmwk100rs

bmwk100rs
Silver member
Silver member

    

62Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sun Sep 26, 2021 7:47 pm

Laitch

Laitch
Life time member
Life time member
bmwk100rs wrote:However, let me know if you have a better source in the U.S.
Suzi Q should advise you because machining is in her genes. Smile In the interim, there's this.

Use what you can find. Fine thread bolts have greater threads per inch than coarse thread bolts; for our purpose, it doesn't matter who-calls-which-what, or which you use if you aren't a stunter leaping ramps regularly. If the hole and bolt have the same thread pitch, they're likely to fit together. 

If you're needing to tap the hole, you choose the thread pitch and diameter you want to use and tap accordingly. If you want to use an 8.8 grade bolt that's 12mm width, use the pitch that's available.

When my shock's stud bent, I extracted it. This was in 2013. Rick G had already given his recommendation in the thread. After realizing he drag-raced, had a beard and could write intelligibly, like the instruction-following drone I am, I got one and used it because it fit the threads in the hole and because I'd rather ride than ruminate. I had no trouble finding an appropriate bolt at Ace Hardware to fit the hole. 

What you really want to spend time doing—instead of going further down the rabbit hole you've entered—is fabricating one of these once you've mounted the replacement stud.


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1995 K75 90,000 miles
    

63Back to top Go down   Rear shock mount stud removal - Page 2 Empty Rear Shock Mount Stud thread pitch Fri Apr 19, 2024 4:13 am

redrockmania

redrockmania
Silver member
Silver member
After a thorough web search including our forum, there are a range of different claims about the diameter and thread pitch of the rear shock mount stud. 
I've just measured mine with vernier's and a thread pitch gauge. Correct diameter is 12mm (not 10mm as some have posted). Correct thread pitch is 1.75 coarse (not 1.5 as some have posted).



Last edited by redrockmania on Sat Apr 20, 2024 6:42 pm; edited 1 time in total (Reason for editing : correction of my earlier thread pitch references in this post)

    

64Back to top Go down   Rear shock mount stud removal - Page 2 Empty Re: Rear shock mount stud removal Sat Apr 20, 2024 5:18 pm

Two Wheels Better

Two Wheels Better
Moderator
Moderator
As a person who's suffered the ignominious shockie stud breakage whilst riding two-up (while overtaking a car) Down Undah, I know full-well what a hassle it is, so I carry a spare, and two nuts with which to unscrew the broken one if it's got anything sticking out....Thanks to Rick G and Marg we had the offer of a comfy bed, a trailer ride, dinner, and a pleasant evening with friends, home the next day, instead.

Re-reading the entire thread I see that one person mentioned 10mm and was corrected, then said "oops".

I'm fairly certain the general membership know it's a 12mm stud, and that .05 thing is surely a typo.

Here's a piccie of the two (OEM stud part numbers as spares) lengths with a thread pitch gauge doing its job.
Rear shock mount stud removal - Page 2 20240411


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"How many cars did we pass today?" "ALL of them."
1977 R75/7-100, '93 K11/K12 Big Block, '93 K1100RS, '95 R100 Mystic, '96 K1100RS, 2 x '98 K1200RS, '06 K1200R & '09 K1300GT
    

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