Problem with the rear sprocket nuts?

Here be mechanigeeks. Anything technical that is not a teething problem.
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bambadoo
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Problem with the rear sprocket nuts?

Post by bambadoo » Sat Feb 16, 2013 9:53 pm

Hi folks.
Was supposed to change the front/rear sprocket and chain today.

A problem occured (maybe I have missed something?)

But how to remove the 5 sprocket nuts from the rear sprocket?

I finally managed to remove 1 but the 4 rest remains.
Are there any tricks or just brute force? . Maybe my tools arent good enough?

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Re: Problem with the rear sprocket nuts?

Post by kevxtx » Sat Feb 16, 2013 10:22 pm

They are tight you will need an extension for that Allen key, if you feel you are going to strip the Allan key part, heat up the nut with a heat gun to break down the Loctite.

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Problem with the rear sprocket nuts?

Post by Duckman » Sat Feb 16, 2013 11:27 pm

Here's a neat trick to getting the better of red Loctite. Put your Allen socket in the bolt and give it a sharp whack with a hammer. It'll come right out after that.
Mike
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(Sophia, Gina, Brunhilda)

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Sat Feb 16, 2013 11:31 pm

Duckman wrote:Here's a neat trick to getting the better of red Loctite. Put your Allen socket in the bolt and give it a sharp whack with a hammer. It'll come right out after that.
That is excactly what I have tried. Alot. But only luck with one. They are "sitting" like.....

Will try to heat and get an extension. I actually stood on the sprocket to get some momentum but that was not even close.

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Re: Problem with the rear sprocket nuts?

Post by Mikeylikesit » Sun Feb 17, 2013 7:18 am

I would put the sprocket assembly back in the wheel for leverage.

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Sun Feb 17, 2013 11:33 am

Mikeylikesit wrote:I would put the sprocket assembly back in the wheel for leverage.
Isn't that a bit difficult when it looks like this? (in front) (The "nuts" are in anlignment with the inner circle)

Image

Still I feel there is something that I have missed :roll:

But will take a trip to the garage and test with a heater gun.

And no - I have not RTFM :mrgreen: - Will be late night reading...

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Sun Feb 17, 2013 12:47 pm

No luck with heat, extender and hammer either I am afraid.
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Will bring everything to a friend of mine later today. He has a superduke and quite skilful to this.

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Problem with the rear sprocket nuts?

Post by ohpyramids » Sun Feb 17, 2013 4:29 pm

My only other suggestion would be to soak them in penetrating fluid and to try an allen key in your impact driver.

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Re: Problem with the rear sprocket nuts?

Post by Mikeylikesit » Sun Feb 17, 2013 4:49 pm

sorry bout th bad advise to put it back in the wheel. I havent had mine apart yet. a big extention pipe or an inpact gun would help here. I have an electric impact gun and its a dream for things like that.

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Sun Feb 17, 2013 7:32 pm

Fixed but it was quite hard. Was firm as h...
Anyway - it is ok now. Almost felt it was a bit corrision in there?
A new sprocket 41T fitted.

BTW - after 23000km the rear sprocket showed little signs of wear and tear.
The chain was approx 1/2 link longer compared to a new one (112 links ) so a bit stretched.
The front sprocket war in not so good shape. And I have changed that one time earlier (from 17t to 16t)

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Mon Feb 18, 2013 1:19 pm

Ok this is how it looks now :) Almost ready for spring and "hammer time" :mrgreen:

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Re: Problem with the rear sprocket nuts?

Post by cavlovic » Mon Feb 18, 2013 5:04 pm

bambadoo wrote:Ok this is how it looks now :) Almost ready for spring and "hammer time" :mrgreen:

Image
I think that your chain is too tight
Image

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Re: Problem with the rear sprocket nuts?

Post by bambadoo » Mon Feb 18, 2013 5:40 pm

Yes - will adjust it when it is on the sidestand according to the manual

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Re: Problem with the rear sprocket nuts?

Post by xedysx1986 » Fri Aug 31, 2018 9:04 pm

I know the old post but next time I recommend insert a sprocket without a wheel and blocking it with a swing arm and a piece of wood, no problem with unscrewing or screwing. Cut a piece of wood through the sprocket and block it on the swing arm

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Re: Problem with the rear sprocket nuts?

Post by Elvis » Sat Sep 01, 2018 10:58 am

I used the tip on this thread and used a hammer on the elen key, it worked with no issues.
The bolts are only 50nm tight but the loctite 243 on the threads is what hold them strong so a good wack of a hammer will lossing it right away

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Re: Problem with the rear sprocket nuts?

Post by Magic Wand » Sat Sep 01, 2018 3:22 pm

Hi all

This is how a solved the problem to make the bolts to come loose - search the forum for:
'Loose rear sprocket nut'

/M

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