Ignoring Sram because I am unfamiliar, and a road vs. mtb/mtn difference, lets say within Shimano mtb/mtn freehub bodies and cassettes, the widths are the same 8 speed through 12 speed. Double check me here: https://www.sheldonbrown.com/speeds.html So a rear derailer has to travel the same distance inboard-outboard-wise for 8-12 speeds, staying within the confines of friction shifting. So is the only other concern how big of a cog you have on the cassette and whether the rear derailer can clear it (and if not, wolf tooth road link or similar, right?). Maybe cage length (and pulley wheel size?) also matter(s) if bigger cogs and wider gear&cog range = longer/more chain to take up? -Matthew San Diego
On Thursday, August 12, 2021 at 12:00:59 PM UTC-7 row.n.2...@gmail.com wrote: > Tom > I run my Altus with 12 x 36 9 speed on my Plattypus using Micro shift 9 > speed shifter on index. Front : Silver Wide/ low double 38× 24. > > On Thu, Aug 12, 2021, 10:45 AM Tom Wyland <tomw...@gmail.com> wrote: > >> Pardon the dumb question, but can an Altus 8 speed rear der work with a 9 >> speed on friction shift? >> >> Thanks, >> Tom "still doesn't know much about shifting" Wyland >> >> -- >> 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-bun...@googlegroups.com. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/rbw-owners-bunch/da3e2632-4f8c-4193-a218-15ca32d4a16cn%40googlegroups.com >> >> <https://groups.google.com/d/msgid/rbw-owners-bunch/da3e2632-4f8c-4193-a218-15ca32d4a16cn%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > -- 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/c97fd1e4-488e-485e-ae51-33a44505d8a5n%40googlegroups.com.
