Hi Kushan. I did something similar to the drivetrain on my Appaloosa last year. I have a 42 / 24 double up front and wanted an ultra-low bailout gear in the back for loaded off-road riding / touring. I'm not a small man and when I get the bike loaded with gear, it's nice to have something really, really low for short stretches to give me a little recovery time on long climbs. I looked at 10spd cassettes but ended up going with a SunRace 11 - 40t 9spd cassette to minimize the number of components I had to change. It worked really well.
My full set-up was: SunRace 9spd thumb shifters (the type Riv used on a lot of builds), 11-40 SunRace 9spd cassette, and a SRAM GX 10spd derailer. I used that derailer as it worked with an 11-40 without any extender but was compatible with the 9spd shifters. Interestingly, this set-up shifted through the full 11-40 without any sort of pull modification. I also used this set-up with Shimano bar-end shifters, but that required a JTek cable pull modifier. I currently have this set up with Microshift thumb shifters in friction mode and a cable pull modifier. I suspect that the 9spd Deore and Silver shifters would work just fine with a GoatLink or similar extender. At any rate, the 24 x 40 combo has provided a usable low, low gear. I rarely use it, but it's nice when needed, which has always been on extended climbs with lots of weight on the bike. I use it for short periods before shifting back into gears that actually feel like they are giving me forward progress! 24 x 40 almost feels like sitting still! The lowest gear-inch on a 24 x 40 is 15.8 inches. A 24x40 is 16.6. Pretty close. By contrast a 24x36 is 18.6. (These calcs are with a 700c wheel at 42mm). Again, I rarely use the lowest gear, but it's nice to have on occasion. It's not THAT much different from an 11-36 in practice, but it is lower on paper and in my head. :) And the SunRace 11-40 9spd is currently available from a lot of different retailers. Erik -- 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/bab26eca-a637-457c-ae96-d11799e0e954n%40googlegroups.com.
