On 06/21/2016 08:48 AM, Michael Hechmer wrote:
As I posted on the tandem discussion "tandems create the worst possible case for shifting. They have long cables that stretch a lot; the captain & stoker may have difficulty coordinating pedal pressure during shifting; they require a higher hi gear because its easy to spin out and they require a lower low gear because they don't climb as effectively as a single. Finally the captain and stoker often prefer different cadences making big jumps between gears hard to satisfy both riders." So in order to solve some of these problems I am thinking about moving from a 9 speed 48/38/26 & 11/28 to a 52/38/28 with a 10 speed 11/30 or 32.
54 x 12 makes a very sweet tandem top gear. I'm personally not persuaded anything more recent betters the old XTR 8 spd 12-32 for tandem use, esp. when mated with a triple with a 54 x 42 x 26, giving you gearing like this:
120.4 93.7 58.0 103.2 80.3 49.7 90.3 70.2 43.5 80.3 62.4 38.7 68.8 53.5 33.1 60.2 46.8 29.0 51.6 40.1 24.8 45.2 35.1 21.7 -- 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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
