Adam, Re: *"...though I'm not sure if I understand what BB will get a specific chainline"*
That will be crank and implementation specific. Since this is Riv-centric we can use the concept of a square taper triple mountain crankset as an example. It will require a specific BB length to achieve the proper chainline for the standard implementation, which in this case is 47.5mm for 135mm rear spacing. I you want to: - Run as a double and rm granny, then reduce spindle by 6mm (mountain double/triple and preferred single speed 47.5mm chainline) - Run as a triple on a bike with 130mm rear spacing, then reduce spindle by 5mm (road triple 45mm chainline) - Run as a double and rm granny plus run on a 130mm rear road spaced bike, then reduce spindle by 11mm (and yes, for some cranks, you cannot find spindles that small) - Run as a double with bash, then increase spindle by 6mm -Justus Mpls, MN On Wednesday, January 10, 2024 at 4:34:21 PM UTC-6 Nick Payne wrote: > Sugino OX series. Very nicely made and attractive cranks that use 110BCD > for the outer ring and 74 BCD for the inner, Q factor 145mm. For some > reason they aren't sold with a smaller chainring combination than 44/30, > but you can use them with smaller chainrings than that. Here's one I > installed on one of my wife's bikes with 39/26 chainrings. The downside of > the cranks is that they're rather expensive - a cheaper alternative of the > same design with 110BCD for the outer chainring and 74BCD for the inner is > the Dixna La. It's about one third the price, and also slightly narrower Q, > though to my eye it's also less attractive: > https://alexscycle.com/products/dixna-la-crank-arm-set-130mm-to-170mm. > > Here's the Sugino OX801 - on Sugino's website it has now been superseded > by the OX901, which looks pretty identical. > [image: IMG_20180102_144900.jpg] > > Nick Payne > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to rbw-owners-bunch+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/rbw-owners-bunch/7fbe7908-ac3b-4450-8cad-d542e7cb81a3n%40googlegroups.com.
