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TECHNICAL MOTOBRICK WRENCHING In Remembrance of Inge K. => The Motobrick Workshop => Topic started by: woodgeek on April 06, 2018, 12:58:28 AM

Title: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 12:58:28 AM
Was putting my rear shock back on after checking my final drive splines.... something didn’t look right. The bushing in the shock looked a little cocked. Hmmm... The mounting stud on rear drive housing looks a little cockeyed. And there’s a piece broken off below the stud. Experts, what are my options?

(https://uploads.tapatalk-cdn.com/20180406/78f389a406048502b3e3dda5d6d99f85.jpg) (https://uploads.tapatalk-cdn.com/20180406/9f64b756bc77158dd13c2d61ef01693b.jpg)
Title: Re: Well, damn... bent shock mount...
Post by: Laitch on April 06, 2018, 05:47:01 AM
Experts, what are my options? 
I'll fill in for the experts until they arrive. Put a washer on the stud then install your shock.
Title: Re: Well, damn... bent shock mount...
Post by: johnny on April 06, 2018, 05:57:07 AM
greetings...

if that was my moto... i would put a stainless washer on the stud then bolt up my shock...

j o
Title: Re: Well, damn... bent shock mount...
Post by: Laitch on April 06, 2018, 07:01:54 AM
Another option is to sell your bike before things get much worse, but consult with a sales expert about that.
Title: Re: Well, damn... bent shock mount...
Post by: johnny on April 06, 2018, 07:21:19 AM
greetings...

caint sell without full disclosure... you need a lawyer...

j o
Title: Re: Well, damn... bent shock mount...
Post by: bizzaro on April 06, 2018, 08:30:39 AM
Not to disrupt the post count war, I would consider replacing it.  If it is a simple R n R. That stud is keeping your bike off your back tire so it can free wheel.  Johnny,(our post count lord  :giggles  ) has posted in another thread about the disastrous  results of shock failure (broken shaft I think it was), which resulted in the bike dropping down onto the tire and the consequential results. 


http://s27.photobucket.com/user/Baatfam/slideshow/Bike%20Stuff/1996%20K1100RS/Crash?sort=2 (http://s27.photobucket.com/user/Baatfam/slideshow/Bike%20Stuff/1996%20K1100RS/Crash?sort=2)


http://www.motobrick.com/index.php?topic=4647.0 (http://www.motobrick.com/index.php?topic=4647.0)


I mean shit, it is probably fine, but if the stress that stud has incurred, results in catastrophic failure, it could really suck for you!  :oldguy: 
Title: Re: Well, damn... bent shock mount...
Post by: Laitch on April 06, 2018, 08:39:40 AM
Sell the bike to a lawyer. Can you really trust your ability to replace that stud? If the stud breaks while backing it out, what then? What if the stud extractor breaks, too? What about carpal tunnel syndrome? Was the shock made on a Monday or Wednesday? All of this is just too damned scary.
Title: Re: Well, damn... bent shock mount...
Post by: johnny on April 06, 2018, 08:59:11 AM
greetings...

i have topped out and bottomed out while overloaded 2up on whack roads... those studds are robust...

this thing is a queered out factory 2 fairy 1upper...

nuff said...

j o
Title: Re: Well, damn... bent shock mount...
Post by: bizzaro on April 06, 2018, 09:09:57 AM

Man, I should know better than to try an run with the big dogs!
Title: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 09:33:49 AM
[emoji23] thanks guys. The plan is to bolt the shock back up, get on with the rebuild then ride it like I stole it.[emoji106]
Title: Re: Well, damn... bent shock mount...
Post by: bizzaro on April 06, 2018, 10:25:50 AM
Yea, that's prolly what I would do. :wave:
Title: Re: Well, damn... bent shock mount...
Post by: Laitch on April 06, 2018, 10:29:14 AM
The plan is to bolt the shock back up, get on with the rebuild then ride it like I stole it.(https://emoji.tapatalk-cdn.com/emoji106.png)
I think you should replace the stud, but before you do that compare the stud hole with one on a final drive that is in certifiably good condition.
Title: Re: Well, damn... bent shock mount...
Post by: Chaos on April 06, 2018, 11:01:06 AM
it should come out if you double nut it.  I'm more curious on how it got bent, motocrossing, FD off bike and dropped, pulling shock off from top mount, hardtail experiment, paradrop???
Title: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 11:13:29 AM
it should come out if you double nut it.  I'm more curious on how it got bent, motocrossing, FD off bike and dropped, pulling shock off from top mount, hardtail experiment, paradrop[emoji47]
Could have been motocrossing or a paradrop. There are some dents in a couple of the header pipes—I always wonder how someone does that. So either the previous owner was riding stadium moto-x or he was much heavier than I riding fully loaded luggage through the desert. 🤷‍♂️[emoji23]

When I remove it, I’ll double nut it and heat it with a torch to soften the loctite. If it’s bent and weakened, I’d hate to have it break off below the surface.
Title: Re: Well, damn... bent shock mount...
Post by: Laitch on April 06, 2018, 11:28:48 AM
Looks good to me.
Title: Re: Well, damn... bent shock mount...
Post by: johnny on April 06, 2018, 01:17:40 PM
greetings...

it wont come out without heat or a monkey wrench cause that oe threadlock is forever...

j o
Title: Re: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 01:18:58 PM
greetings...
it wont come out without heat or a monkey wrench cause that oe threadlock is forever...
j o
Thanks Johnny  :2thumbup:
Title: Re: Well, damn... bent shock mount...
Post by: The Mighty Gryphon on April 06, 2018, 01:25:19 PM
greetings...

it wont come out without heat or a monkey wrench cause that oe threadlock is forever...

j o

But they didn't use it on the f'ing grub screws. :dunno2:
Title: Re: Well, damn... bent shock mount...
Post by: bizzaro on April 06, 2018, 02:27:20 PM
greetings...

it wont come out without heat or a monkey wrench cause that oe threadlock is forever...

j o


Well don't that just suck! Good to know.  Guess that is no easy R n R then. Bummer. Well this is a "mocha Chino" right?  I mean ya must be pretty talented with a hack saw n drill by now, right? :giggles
Title: Re: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 02:38:25 PM

Well don't that just suck! Good to know.  Guess that is no easy R n R then. Bummer. Well this is a "mocha Chino" right?  I mean ya must be pretty talented with a hack saw n drill by now, right? :giggles
(https://uploads.tapatalk-cdn.com/20180406/e1f2dd10ae6f0c0bb91a48a00c2ce4e8.jpg) [emoji23]
Title: Re: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 03:00:40 PM
Ordered a M12x1.5-80mm grade 8 bolt. Will cut it to length once the original stud is removed. Pics to follow.
https://www.belmetric.com/12x15-fine-c-506_510_406/bh12x15x80fclz-hex-bolt-zinc-109-full-p-5605.html (https://www.belmetric.com/12x15-fine-c-506_510_406/bh12x15x80fclz-hex-bolt-zinc-109-full-p-5605.html)
Title: Re: Well, damn... bent shock mount...
Post by: johnny on April 06, 2018, 03:15:16 PM
greetings...

always thought that shock stud needed a slotted nut and cotter pin...

j o
Title: Re: Well, damn... bent shock mount...
Post by: Inge K. on April 06, 2018, 04:56:03 PM
Ordered a M12x1.5-80mm grade 8 bolt.

The lower shock bolt have normal threads, which is M12x1.75........M12x1.5 is fine metric threads.
Title: Re: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 05:03:45 PM
The lower shock bolt have normal threads, which is M12x1.75........M12x1.5 is fine metric threads.
Awww crap. Thanks Inge. I took Rick G's post on the K100-forum as fact. Oh well, I should know by now to measure my own fasteners. Trying to purchase stuff at work without measuring first burns me 50% of the time. At least M12x1.75 is easier to find in full thread.
Title: Re: Well, damn... bent shock mount...
Post by: Inge K. on April 06, 2018, 05:08:46 PM
on the K100-forum

Have a look at this: http://www.k100-forum.com/t5094-studs-who-wants-a-stud#56575 (http://www.k100-forum.com/t5094-studs-who-wants-a-stud#56575)
Title: Re: Well, damn... bent shock mount...
Post by: woodgeek on April 06, 2018, 05:10:17 PM
Have a look at this: http://www.k100-forum.com/t5094-studs-who-wants-a-stud#56575 (http://www.k100-forum.com/t5094-studs-who-wants-a-stud#56575)


Whoa! That is awesome! Thanks Inge!