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PostPosted: Thu Mar 21, 2013 10:10 pm 
Newbie

Joined: Thu Mar 21, 2013 9:56 pm
Posts: 2
Hi, I am having trouble setting up a bike. Bought a clamp on shimano arabesque shifter and dura ace front derraileur. Both clamps fit the tube. Unfortunately every time I shift the derailleur or shifter moves. I have tried putting a rubber spacer in to grip but this doesn't work.

Anyone have any other ideas how to stop the sliding? I can't braze anything onto the bike as it has just had respray.
I'm thinking as a last resort super glue...

Cheers gavin


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PostPosted: Thu Mar 21, 2013 11:49 pm 
Dirt Disciple
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Joined: Wed Sep 05, 2012 7:29 pm
Posts: 78
Location: Stroud
Hi,
I never done this before just an idea! I presume you could buy some rubber and cut it to shape, placing it between the frame and the shifters? It would also stop any further scratching.
http://www.ebay.co.uk/itm/SILICONE-RUBB ... 4169cd921a
James.

oops sorry its late! should have read that more closely before posting!!


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PostPosted: Fri Mar 22, 2013 12:02 am 
Dirt Disciple
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Joined: Wed Sep 05, 2012 7:29 pm
Posts: 78
Location: Stroud
now that I awake, what about this??
http://www.ebay.co.uk/itm/GAS-PTFE-TAPE ... 3f125e47c6


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PostPosted: Fri Mar 22, 2013 12:15 am 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8223
Location: Cumbria
If the clamp is the correct size for the frame then nothing moves.....there is a mismatch somewhere :(

Any pics?

Shaun


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PostPosted: Fri Mar 22, 2013 2:44 am 
rBoTM Winner
rBoTM Winner
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Joined: Wed Dec 12, 2012 10:18 pm
Posts: 2373
Location: California
I am with Shaun, a correctly fitted clamp on derailleur of shifter doesn't even need to be torqued down very hard to stay in place. Maybe there is some kind of obstruction that is preventing the bolt from fully being tightened?


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PostPosted: Fri Mar 22, 2013 8:28 am 
Retro Guru

Joined: Wed Sep 14, 2011 7:28 am
Posts: 300
Location: Fife
PTFE tape wouldn't work either, PTFE's primary use is as a non-stick coating.

Assuming the clamps are the right size and everything is put together correctly I would cut strips from an aluminium drink can and use them to make shims, similar to the rubber ones you get with light brackets.


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PostPosted: Fri Mar 22, 2013 8:31 am 
Retro Guru

Joined: Mon Feb 11, 2008 9:42 am
Posts: 2362
Degrease, clean up and then try some grip paste. The same stuff you use on carbon seatposts and bars to stop them slipping.


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PostPosted: Fri Mar 22, 2013 10:38 am 
Retro Guru
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Joined: Wed Apr 25, 2012 2:08 pm
Posts: 2185
Location: Shrewsbury
Cut done a piece of old innertube, super grip and protects the paint :)


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PostPosted: Fri Mar 22, 2013 5:06 pm 
Newbie

Joined: Thu Mar 21, 2013 9:56 pm
Posts: 2
Thanks for replies. Admittedly the clamp for derraileur is slightly too big but will fashion a shim for it. The gear shifter is a perfect fit. The fixing paste, where can you buy that from? Cheers


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PostPosted: Fri Mar 22, 2013 5:18 pm 
Old School Grand Master
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Joined: Fri Oct 14, 2011 8:41 pm
Posts: 8223
Location: Cumbria
Is there a little tiangle brazed underneath the tube where the shifters go?

Shaun


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