I've just got a Genesis Datum 2019 bike on clearance.
The spec wasn't exactly what I would want—for a start it has SRAM rather than the Shimano we have on other bikes in our household—but more importantly it has 172.5mm cranks whereas I have reduced hip mobility and 165mm cranks are much better for me.
I therefore need to swap out the chainset, but wonder if it's possible to switch over to a Shimano chainset at the same time?
Since this is 1x, there is no front derailleur compatibility to worry about, just the chain and the bottom bracket. I assume the chain will be fine, since Shimano and SRAM 11-speed cassettes are inter-changeable.
So then it's just a question of the bottom bracket, which I suspect won't be compatible.
I'm quite used to doing maintenance on bikes, but so far I've been lucky to only work on BSA threaded bottom brackets, with either square taper or Hollowtech II cranks, so don't know anything about the press-fit type (86mm shell width, I understand) on the Datum.
The same frame has been sold with Shimano's BB-RS500-PB bottom bracket, so presumably if I get this and a 165mm Shimano 1x chainset I will be good to go?
Or will a 1x Shimano chainset work with the BB used by the SRAM chainset?
And are there other compatibility issues I need to worry about?