Hi all,
I did search, but with no luck, so..
Standard Deore front mech with triple ring setup (so assuming 22, 32, 42T rings). Want to loose the outer ring, and therefore increase the middle ring size a little to compensate. What's the largest we can go with? 34? 36?
Ta, Duane 🙂
Not sure, but I run a 24/36 double with standard xt 3 spd mech, seems to work ok.
hth
simone
Been thru this myself. Bottom line is that a standard three speed front mech will work ok with just about any size of middle on a double setup - its not rocket science, the thing just yanks the chain off one chainring and it catches on the next.
That's the short answer, the long answer is you can get some issues with chain rub at the extremes of the cassette, because the greater diameter of the 36T chainring means the chain is running higher in the FD cage where it's narrower. Then there's a whole nother issue of the big gap between the 22 and 36 chainrings causing clunky shifting.
So, if you're anal about shifting like I am, then I'd really recommend buying the M665 36T chainring and M665 double specific front mech, which are specifically designed for working together in a 22/36 double. It's a long story to go into here, but its all about fine tuning cage size & shape, with chainring diameter and ramps, and the M665 stuff does it well - and gives really sweet shifting....
Someone on Weight Weenies ran a 26/42 (IIRC) and [i]claimed[/i] it worked. I'd not be so sure! 14t different will be fine.
Thanks guys.
Can anyone else just give a second opinion on whether a 22T and 36T ring will work fine with a standard front mech (ie someone who has/currently has this setup)
Ta, Duane 🙂
been using 22/36 with shimano tripple mechs for years and years, you could go to 22/38 if you really wanted.
Deore 36T rings are cheap, shift well and last (steel)
Cheers mate.