So, after deciding to stick with a bigger 2-ring instead of moving to a 3, I think I've settled on going for a Shimano 105 5750 50/34 Compact w/175mm - which is a 10 speed like the rest of my train. But I still have a couple of small dangling questions...
Originally Posted by
cpach
To switch to a road crank (the most common option is 50/34, other options are 48/32, 50/36, and more rarely 48/32 and 46/30) you'll need a road compatible flat bar front shifter
Hmmm, what do you mean by "flat bar" front shifter?
Originally Posted by
cpach
and front derailleur in addition to the crankset.
Since my FD is a clamp on and I'm sticking with a two-ring, I'm going to risk just adjusting it as-is and see if I can get it sorted to the new height. If not, then I'll get another proper FD for it - sound good?
Originally Posted by
cpach
Don't worry about the BB--your bike uses a threaded BB shell and you can buy a BB to match whatever crank--it's a relatively minor cost in comparison to the crank itself and potentially the labor if you're paying for the work.
Which path do you think is better/easier/less-likely-to-be-problematic - switching the BB to match the crank or getting adapters for the sram BB that I've got now? Note that I haven't taken the crank off yet to see exactly what it is yet and I haven't more detailed info from trek about it yet either...
Originally Posted by
cpach
Also check out your shifter--is there a small switch on the underside? It may be a 3x compatible shifter as is, as they'll work with a double FD. If so you can get a 3x crank and derailleur.
Even though I'm sticking with a 2 this point was really bugging me - since I earlier said I had M6000's per the specs and everything I've seen says that those have a 2x-3x mode. Since I couldn't find the 2-3x switch, it worried me that I was wrong about the part (and maybe other things?) so I went hunting... After more inspection, it turns out mine are a
SL-M6000 which specifically
don't have the 2-3 ring switch. Ok, now I'm on point..
Thanks again to you and everyone else!