Originally Posted by NM-NewRoadie
Is there any major difference with an 8 speed 105 short cage? I've got a 28 on there now and no problems but am going up to Colorado at the end of the month for the BTC, and might like having a few more gears, I've got a compact crankset, but not enough money to upgrade to a tripple...I've been climbing some really big hills here, and have survived, but am concerned about back to back days with REALLY large climbs.
Same concepts apply. I had a similar situation on one of my bikes. I was unable to use a 105 RD on my 8s 32T so I ended up getting a "mountain" RD. But it works just fine with the 8s "road" shifters.