I am working on upgrading my old steel mtb. I've upgraded old brakes for Avid Single Digit 3 V-brakes and Tektro levers.
I am now looking into upgrading the drivetrain as the next step. Not sure I am willing to go all the way to XT component - but want the 27-gears anyhow.
So, do you have any suggestions for a crankset? Should I aim for a road or mtb crankset? The touring I am doing combines road and off-road (gravel). And, what should be the preferable arm length? The current arm length is 175mm - which might be too long?
Thanks for the advise.