hookooekoo
Senior Retro Guru
Those who have one will know that the Shimano RD-M900 has a mid-length cage. Its cage length is about halfway between a road dérailleur cage (double chain ring), and a full length MTB dérailleur cage (triple chain ring).
My chain is now as short as possible, but it is still slightly too long to use the smallest two sprockets with the granny ring. If I remove another complete link (2 inches), it will be a mechanical disaster if I forget that the big-sprocket big-chainring combo is forbidden.
Possibly I could slightly improve the situation by buying a half link, but is it really worth it? Mostly I find that if I need the granny ring then I probably need the largest sprockets too.
My setup is 28-12 and 46-36-24. I'm guessing that's slightly too much for the 'Total 33T' maximum difference that's stamped on the dérailleur cage, although I can't remember how to calculate the maximum difference on my setup.
If you have one of these mid-length rear mechs, how did you set your chain length? Did you bother with a half link?
My chain is now as short as possible, but it is still slightly too long to use the smallest two sprockets with the granny ring. If I remove another complete link (2 inches), it will be a mechanical disaster if I forget that the big-sprocket big-chainring combo is forbidden.
Possibly I could slightly improve the situation by buying a half link, but is it really worth it? Mostly I find that if I need the granny ring then I probably need the largest sprockets too.
My setup is 28-12 and 46-36-24. I'm guessing that's slightly too much for the 'Total 33T' maximum difference that's stamped on the dérailleur cage, although I can't remember how to calculate the maximum difference on my setup.
If you have one of these mid-length rear mechs, how did you set your chain length? Did you bother with a half link?