B Tension screw

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richardjiles
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B Tension screw

Postby richardjiles » Sun Nov 04, 2012 02:07 am

So I was looking at the rear deraileur and noticed how far out the jockey wheel is, so are start losening the b tension screw to get it closer, well the screw is completely out now, and its still a good centimeter away from the cog.....
what do I do now?
Image
Image
2nd image so you guys know the screw its completely out
Last edited by richardjiles on Sun Nov 04, 2012 02:25 am, edited 1 time in total.

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nicklouse
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Re: B Tension screw

Postby nicklouse » Sun Nov 04, 2012 02:10 am

incorrectly fitted mech.

more info and pics needed.

what mech? which cog are you adjusting on? has the mech swivelled and is not stuck on its pivot?
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
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richardjiles
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Re: B Tension screw

Postby richardjiles » Sun Nov 04, 2012 02:12 am

nicklouse wrote:incorrectly fitted mech.

more info and pics needed.

what mech? which cog are you adjusting on? has the mech swivelled and is not stuck on its pivot?

Basic shimano Acera rear mech
adjusting the screw on the largest cog
will upload some pictures
swivelled? not that I know of

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nicklouse
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Re: B Tension screw

Postby nicklouse » Sun Nov 04, 2012 02:25 am

it has to or how does it move closer to the cogs. arround the mounting bolt.

you should also set the B screw on the small cog.

see point 4

http://techdocs.shimano.com/media/techd ... 647072.pdf
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."

Parktools :?:SheldonBrown

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richardjiles
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Re: B Tension screw

Postby richardjiles » Sun Nov 04, 2012 02:27 am

nicklouse wrote:it has to or how does it move closer to the cogs. arround the mounting bolt.

you should also set the B screw on the small cog.

see point 4

http://techdocs.shimano.com/media/techd ... 647072.pdf

yup following these, but I still cant get the jockey wheel close enough

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nicklouse
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Re: B Tension screw

Postby nicklouse » Sun Nov 04, 2012 02:33 am

so is the tab that the screw was in touching the drop out?

how is it in the small ring? as that is the only one you are concerned with.
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."

Parktools :?:SheldonBrown

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richardjiles
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Re: B Tension screw

Postby richardjiles » Sun Nov 04, 2012 02:49 am

nicklouse wrote:so is the tab that the screw was in touching the drop out?

how is it in the small ring? as that is the only one you are concerned with.

yup its touching the hanger
its about the same, if not a little further out on the smallest cog, thats why I wanted to adjust it in the first place :(

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richardjiles
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Re: B Tension screw

Postby richardjiles » Mon Nov 05, 2012 02:20 am

OMG this bike is dead to me

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The Rookie
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Re: B Tension screw

Postby The Rookie » Mon Nov 05, 2012 08:04 am

The tension in the 2 mech springs won't always allow it to come further forward, also if you pull it away and let it go four times it will end in four different places...

Worth lubing all the pivots in case one is sticky as that will affect the balance between the 2 springs.

Mech will work fine like that anyway!


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