Originally Posted by
Sport10y
I've recently purchased a new TREK 520 (48/36/26 and 11/32) and prior to this purchase studied that many recommend the 26T chain ring be swapped for a 24T chain ring for climbing. My thought was that I would wait and see if I really needed the 24T or not and maybe those folks suggesting this are just outta shape. When I discussed this with my LBS, they were concerned about how well it would shift from a 24T ring to the middle ring, which is currently 36T and weren't too enthused about the idea. I will be taking a 600 mile trip this Spring that will be all mountainous through Appalachia. So, following my testing unloaded and seated, sure enough I must be outta shape, because it seems to me I will need just a smidgen lower gear than what the current 26T chain ring offers me loaded (unless I’m going to stand and push it all day. (at least this is my current hypothesis)). Based on what I’ve read this must be where this 24T ring comes in, correct? Can anyone give me a recommendation on what I need to do/buy/install or the most seamless way to get to where I need to be on this? Do I just change out that one chain ring or is this going to get more complicated and costly than that. Again, I’m trying to minimize my learning curve based upon your experience. Thanks again for all your help on this and other topics. Sport
I have a
48/38/22 triple crank that started off life as a 48/38/28 (I pulled the crank, took off the old granny, put on the new one, and put the crank back on). When I drop into the granny gear, I simultaneously shift the rear derailleur up 2 or 3 gears so I'm not spinning out. When I made the change, I found my chain would sometimes pop off, so I installed an
N-Gear Jump Stop and the problem stopped.
I very much like my current arrangement. I don't go down to my granny gear very often, but when I do, I'm very glad to have it.
Cheers,
Charles
p.s. Your derailleur may not be big enough to handle the new length of chain. I shortened the chain (although still long enough to get into big-big) and kept the derailleur as is. A long cage derailleur would not be crazy in this case.