Originally Posted by
Tim_Iowa
I like triples, but I agree that a compact (50/34) or subcompact (46/30 or similar) double crankset would be cheaper and easier than converting this bike to a triple.
If you want even lower gears, you can use a 9-speed MTB rear derailleur to fit a larger cassette, as big as an 11-36. It will index 10 speeds perfectly with your 10 speed Ultegra shifter.
I bet that this configuration (wide range double) would be cheaper than going to a triple. Mostly because you don't have to buy a new left shifter.
Wide range double:
compact or subcompact crankset, matching bottom bracket (keep the front derailleur)
MTB cassette
MTB rear derailleur (XT level RD-M772 or XTR level RD-M972 are great picks)
new chain
Triple:
triple crankset, matching bottom bracket
new FD
new left shifter
new RD (medium cage)
new chain
You guys have been awesome.
I'd love it if I could just put on a compact or subcompact crankset. At this point I don't need a drastic change, perhaps when I hit 60 I may, but for now I may be able to get by for a few more years with a smaller crankset if it would make a noticeable difference on the hills.