Setting up rear mech.

Sorting out your thrunge brackets, fettling your inter-rositers and even stuff about bike parts.
Jim Lyon
Posts: 41
Joined: Wed Aug 01, 2007 16:37 pm

Setting up rear mech.

Postby Jim Lyon » Fri Oct 12, 2012 14:53 pm

Hi!
I understand the basics of setting one up, but why & how do you set up the "B" screw?
While it's probably irrelevant, on the grounds it's better to give too much info. in this situation, rather than not enough, this is for a Trek 820 MTB set up for road use with front sprockets being 28 / 38 / 50 & Shimano HG rear cassette is 12 - 28 T. The chain is 110 links long & the rear mech. is Shimano Exage 300LX - TIA !

Cheers,
Jim

User avatar
zx6man
Posts: 1082
Joined: Wed Mar 21, 2012 13:00 pm

Re: Setting up rear mech.

Postby zx6man » Fri Oct 12, 2012 14:56 pm

The B screw moves the uper pulley away from the cassette, I believe it should about 1.5 links away.

User avatar
nicklouse
Lives Here
Posts: 80713
Joined: Thu Mar 20, 2003 12:14 pm

Re: Setting up rear mech.

Postby nicklouse » Fri Oct 12, 2012 15:10 pm

Jim Lyon wrote:Hi!
I understand the basics of setting one up, but why & how do you set up the "B" screw?
While it's probably irrelevant, on the grounds it's better to give too much info. in this situation, rather than not enough, this is for a Trek 820 MTB set up for road use with front sprockets being 28 / 38 / 50 & Shimano HG rear cassette is 12 - 28 T. The chain is 110 links long & the rear mech. is Shimano Exage 300LX - TIA !

Cheers,
Jim

why is the chain 110 links long?

as mentioned the B screw moved the position of the top jockey wheel.

read the info on Parktools.
"Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
Parktools :?:SheldonBrown


Return to “MTB Workshop & Tech”

Who is online

Users browsing this forum: whyamihere and 2 guests