I know there are older 3x10 combinations that could be made to work just fine. However, those same components may be much harder for RBW to source as brand new from their vendors. I might be able to locate new components that could work and have them drop-shipped, however, I don't have the knowledge or experience to know before I order whether or not they would work. If a component I ordered did not work, I would have wasted my money and their time on the attempt. I don't want that. If I had a close mechanic friend I could work with to select individual components from disparate vendors and then assemble the collection once all of the pieces arrived, I might try that. But, I don't. Everyone here is great, but I don't expect the list to fulfill that role. I need a more expedient solution suitable for RBW to assemble in a timely manner. So, from that viewpoint, it is much safer for me to let them pick parts which are guaranteed to work well together.
As for that result being 3x9 with bar end shifters instead of 3x10 with down tube shifters, that latter shifter selection was just a guess at preference, mostly based on aesthetics. The only shifters I have used recently are SRAM Rival and, before that, Shimano 105. Both down tube shifters and bar ends are a change and I have no recent experience with either to have formed a solid preference. It's almost like flipping a coin as to which I might prefer. I don't really mind them making the call on this. At least, that's what I tell myself. :) Thanks. Tim On Fri, Aug 26, 2016 at 7:54 AM, Tim Gavin <[email protected]> wrote: > On Fri, Aug 26, 2016 at 8:35 AM, Bill M. <[email protected]> wrote: > >> Just a side note - one thing I like about SRAM is that their road and >> mountain parts play nicely with each other. >> >> Bill >> Stockton, CA >> > > Bill- > > That was true for 10-speed SRAM; both their road and MTB derailleurs used > their "Exact Actuation" cable pull ratio so you could mix and match. > > Unfortunately, SRAM's 11-speed (and now 12-speed) MTB systems use a new > "X-Actuation" ratio that makes them incompatible with their 11-speed Road > systems (which still use the Exact Actuation ratio). > > > Tim- > > As others have pointed out, 3 x 10 indexed Shimano is completely > possible. You can use the 7900 downtube shifters with a 9-speed MTB > long-cage RD; these parts all use Shimano's "SIS" ratio so they're > compatible. > > On my Riv Road Std, I use the 7900 bar-ends with a 9-speeed XT M772 RD, > and they index a 10-speed 11-32 cassette perfectly while taking up enough > chain for my 52/42/30 Campy triple crank. > > Don't get talked into 3 x 9 bar-ends (which are great if you like them) if > you really want 10-speed downtube shifters. FYI, if you want to have both > friction and index possibilities, find a set of 7800 shifters. The 7900 > shifters are index-only for the rear. > > Best of luck, > Tim > > > -- > 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 [email protected]. > To post to this group, send email to [email protected]. > Visit this group at https://groups.google.com/group/rbw-owners-bunch. > For more options, visit https://groups.google.com/d/optout. > -- 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 [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
