I'm pretty sure the combination of slack seat tube angle, super low BB, and long chainstays that angle noticeably upwards from the BB prevents the use of a normal FD on the Mystery Bike/HS/Bosco Rubbe. If you set the derailleur low enough to be effective, the cage will hit the chainstay before it can shift into the small ring.
This is conjecture from having seen one in person, but I haven't ridden one or asked RBW. The one in my size hadn't been built up when I was there. On Monday, September 24, 2012 1:17:13 AM UTC-7, Matt Beebe wrote: > > Could you just get a clamp-on stop for an FD on the mystery bike? Or > is there another reason why it will not take an FD (like the angle between > ST and chainstays or something)? I know it has a very specialized > geometry for the type of riding/handling it is intended for, but am just > curious if there really is a limitation preventing use of available FDs or > if one could be designed/modified for it. Of course, I'm sure some > folks will use an IGH on these rigs. > > > > On Sunday, September 23, 2012 12:57:13 PM UTC-4, James Warren wrote: >> >> >> I'm pretty sure that the new Riv model with no cable stop for front >> shifting (and hence no easy way to do a FD) would be a great candidate the >> new cogs that SRAM is coming out with: 11 speed cluster in the rear with 42 >> as the largest one and only one chainring in the front. >> >> You could do 34 or 32 as your single front chainring and still pretty >> much have a lowest gear suitable for touring. With a 32 in front, the 32/42 >> low would be very similar to a 24T granny combined with 32T rear cog. With >> a 34 in front, the 34/42 low would be a bit easier than a 24/29. >> >> The lack of large outer chainring would provide good real estate for a >> pants guard. Also, I've been riding my 1x11 Alfine QB a lot lately, and >> it's nice to have a wide gear range and no FD. Just a bit less complication >> and a beautiful bare seat tube when you look down. I think it would be even >> better with a rear derailleur instead of IGH. >> >> Such a bike would be really sweet. >> >> -Jim W. >> >> -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/Lm9qdbneW0MJ. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
