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PostPosted: Sat Sep 12, 2020 6:22 pm 
Retro Guru
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Joined: Mon Dec 08, 2008 5:50 pm
Posts: 648
Location: The Shire
Hi guys,

For my 2004 Cinder cone i have recently purchased a Sunrace MS8 11-46 cassette for a 1x11 set up with 32t on the front.

Reading conflicting things about rear derailleurs, so thought i'd ask the experts on here :D

Basically, medium or long cage ? looking at XT RD-M8000-GS but the long cage seems to be ALOT cheaper than the medium, just wondering which would be best suited to the above set up ?

Finally Goatlink needed for the above, yes or no ?

Thanks !!!


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PostPosted: Mon Sep 14, 2020 8:33 am 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 10254
Location: New Forest, UK
Two things to check in the Shimano tech docs:
1 Tooth difference the mech can take up (this is the surplis the mech cage can wrap)
2 Max sprocket size - otherwise the slope of the mech will push the top pulley into the cassette.

The goatlink / mech dropper fixes the collision issue, not the wrap. Hope this clarifies things a little.


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PostPosted: Fri Sep 25, 2020 9:13 pm 
retrobike rider / Gold Trader
retrobike rider / Gold Trader
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Joined: Thu Jul 09, 2009 2:12 pm
Posts: 3493
Location: Yateley, Hants.
M8000 medium will run a 46t without a goat link on a 1x, shimano changed the guidance after the slx m7000 came out.


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