Hi Patrick, I read through the thread, and I hope I understand what you're trying to do: "The riding I do is mostly in the 24..."-- Is the 24T adequate? Is it too high or too low for your 8-spd 11-32 cassette? Do you spend your time mainly on the 11 or mainly on the 32 or in the middle (or maybe the terrain rolls so much that you shift through the entire cassette?).
Then you write "but then there are sections of flat and down where pedaling is needed at higher speeds."-- is this mainly in the 36T middle ring? (You mentioned that the 46T doesn't get much use.) Does the 36T with the 8-spd 11-32 offer a good range for your needs? On those flats, do you spend a lot of time on the 11 and could use a larger front ring? If you got the standard Riv build, I'm guessing that you could switch from 8 to 9 without much pain. But, the IRD/Riv 8-spd is 12-34 and may just do the trick for you (compared to the 9-sp 12-36). Would the 36 rear serve you better than 34? Perhaps you could use a little more top end 11 vs 12 (8-spd 11-32 cassette)? Since it sounds like you're interested in changing the chainrings, would 40/24 be better than 36/24 (essentially the current state)? Maybe you'd be better served with something a little higher? 42/26? It would depend on what gears you use most. Good luck! Shoji On Tuesday, March 25, 2014 9:28:26 AM UTC-4, Deacon Patrick wrote: > > I found expander sprocket for a 10-speed cassette: > http://www.chainreactioncycles.com/us/en/hope-t-rex-expander-sprocket/rp-prod119003which > then gives an 11-40 range. Will a 10-speed cassette require different > shifters, derailure, etc? > > RIv. sells the 9-speed cassette (for $50) that is 12-36. Does moving to a > 9 from an 8 require a change in drivetrain parts, or is it interchangeable > (I know I'd need a new chain). Anyone know of an expander sprocket for > 9-speed? > > With abandon, > Patrick > > -- 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 post to this group, send email to rbw-owners-bunch@googlegroups.com. Visit this group at http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
