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PostPosted: Wed May 01, 2013 12:02 pm 
Retro Guru
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Joined: Wed Dec 19, 2007 10:05 am
Posts: 961
Location: Brussels
Hi guys,
I have a Golden Arrow front mech that I'm cleaning up, but the limit screws don't want to play nice. What are the usual tips for freeing them up? All I have to hand is some fairly standard penetrating oil which I applied liberally and left overnight with no success. Would something like Plusgas be expected to work.

The slots in the screws aren't in the best condition and I don't want to risk chewing them up really badly so that there's no shifting them in future. If I can just get them moving then at least I have the option of replacing them later.

Cheers,
Gareth.


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PostPosted: Wed May 01, 2013 4:45 pm 
rBoTM Winner
rBoTM Winner
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Joined: Wed Dec 12, 2012 10:18 pm
Posts: 2373
Location: California
Gareth,

You are on the right track unfortunately a really stuck bit had years to get in that spot and so soaking it overnight likely will have little affect. Like you mention it is difficult to adequately torque the tiny limit screws but I would just keep trying. The good news is that front mechs are generally cheap, unless this is a rare part like the first generation, cable stop, Campagnolo Record derailleur, so if you strip it, bin it, and get another.

Steven


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PostPosted: Thu May 02, 2013 12:16 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
Heat shocking can also work to break the bond - try pouring boiling water all over it, then a quick dip in a bucket of cold water.


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PostPosted: Thu May 02, 2013 9:11 pm 
Old School Hero

Joined: Sun Sep 16, 2012 9:54 pm
Posts: 241
If the tips above don't work I have a golden arrow front mech for sale at the mo, good price, good condition and guaranteed limit screws move freely!


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PostPosted: Sat May 04, 2013 6:53 am 
King of the Skip Monkeys
King of the Skip Monkeys
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Joined: Wed Nov 07, 2007 4:34 pm
Posts: 26149
Location: Moomin Valley
leave some 3in1 oil in them for a few days. Works 100% 90% of the time.


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