I have the following equipment:
Deore LX FC-M580 (42-32.22) crankset
Deore LX CS-M580 (11-34) cassette
Deore LX RD-M580-SGS rear derailluer
mounted to a Surly LHT.
The rear derailleur doesn't seem to be long enough to engage the last two sprockets on the rear cassette but as far as I know it is the longest one available. Is this normal? Is there any way to make it work?
'''96 Litespeed Catalyst, '05 Litespeed Firenze, '06 Litespeed Tuscany, '12 Surly Pacer, All are 3x8,9 or 10. It is hilly around here!
No reason it shouldn't work so I second the recommendation to check the chain length. If the chain too short to allow shifting into the largest cogs, it must be changed. Also, the derailleur's inner travel stop screw must be adjusted so the derailleur can move far enough inboard to reach the largest cog. Either of these could be your problem.