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PostPosted: Mon Jul 29, 2013 2:19 pm 
retrobike rider
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Joined: Thu Oct 14, 2010 1:33 pm
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Location: Brighton
right, for some reason, i'm not all too confident when it comes to choosing the disc caliper adapter for my brake.
i got LX M585 disc with a 203mm rotor.
IS mount required
any reason why i cant just choose any old front brake disc mount adapter for 203mm rotor?


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PostPosted: Mon Jul 29, 2013 3:50 pm 
Retro Guru
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Location: Poppy Fields
Usually need one 20mm smaller for the back as I recall. The one I used on the front of my old bike was for 203mm and used the same one for the rear to give me spacing for a 183.

http://www.ukbikestore.co.uk/product_im ... ehouse.jpg


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PostPosted: Mon Jul 29, 2013 4:05 pm 
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Should also have added I have a spare Hope mount to run a post mount caliper on an IS mount at the rear you can have for £6 posted if you want. It is a G on that pic.


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PostPosted: Tue Jul 30, 2013 10:17 am 
retrobike rider
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will your rear adapter be compatible with my front brake?
the adapter needs to fit to IS mount forks and have my 'post mount' caliper fitted to it for a 203mm disc rotor.
so i guess that makes the adapter an IS to Post mount for a 203mm disc rotor? am i making sense?


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PostPosted: Tue Jul 30, 2013 11:40 am 
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Oh no sorry. It is for the rear IS to do 203mm rotor. :) Looks like this - http://www.hopetech.com/page.aspx?itemi ... cification and is the G mount.

For the front you would need a Hope B mount to run a 203mm rotor.

To run the mount you have on the rear you would need to use a 183mm rotor.


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