Shimano FD-M550: correct way to clamp cable?

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Laowai_1
Posts: 21
Joined: 29 May 2018, 11:46am

Shimano FD-M550: correct way to clamp cable?

Postby Laowai_1 » 1 Jun 2018, 2:48pm

In trying to understand the cause of a very stiff operation of my front derailleur (mech = FD-M550; shifter = ST-M095) I have received 2 different recommendations on how to pass the cable through the clamp. The route I chose was to pass it in a straight vertical line after exiting from the cable guide under the BB, and inside a 'peg' cast in the clamp. However, as can be seen from the attached photo (assuming I can figure out how to attach it !) there is a groove cut into the clamping surface that is about 90 degrees to a vertical line. The other advice is to pass the cable outside the peg and then locate it in the groove.

Which is correct?

(I cannot be sure that this groove is original and not just wear in the cable clamp)

IMG_2815-3.jpg
FD-M550 cable clamp

Brucey
Posts: 36191
Joined: 4 Jan 2012, 6:25pm

Re: Shimano FD-M550: correct way to clamp cable?

Postby Brucey » 1 Jun 2018, 3:19pm

cable goes over (i.e. to the left of) the little peg, IIRC. Force at the shifter will be slightly higher if the other route is taken, and the shift ratio will be wrong for indexed front shifting.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

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NUKe
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Joined: 23 Apr 2007, 11:07pm
Location: Suffolk

Re: Shimano FD-M550: correct way to clamp cable?

Postby NUKe » 1 Jun 2018, 3:35pm

Manual will beavaialbe on line @ http://si.shimano.com/#/
NUKe
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Brucey
Posts: 36191
Joined: 4 Jan 2012, 6:25pm

Re: Shimano FD-M550: correct way to clamp cable?

Postby Brucey » 1 Jun 2018, 4:25pm

I already looked, and it isn't....

However there were lots of other mechs with this design, so one of those SI techdocs ought to have a diagram.

cheers
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~~~~~~~~~~~~~~~~~~~~~~Brucey~~~~~~~~~~~~~~~~~~~~~~~~

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fausto copy
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Joined: 14 Dec 2008, 6:51pm
Location: Pembrokeshire

Re: Shimano FD-M550: correct way to clamp cable?

Postby fausto copy » 1 Jun 2018, 5:39pm

download/file.php?id=51529

See above for Steve O'C's reply and image on my Stiff Front Changer posting.
fausto.

Not a very good link, but shows the correct cable clamp position (above the tab).

Laowai_1
Posts: 21
Joined: 29 May 2018, 11:46am

Re: Shimano FD-M550: correct way to clamp cable?

Postby Laowai_1 » 1 Jun 2018, 8:57pm

OK fellas, it's clear I did not clamp the cable in the correct way.


I'm really thankful for the quality of the advice/answers on this technical forum. It creates a lot of credibility. Thank you.