<https://lh5.googleusercontent.com/-7aVBgxuotQA/UzDQr09B-sI/AAAAAAAAADo/efYAQ7tb6UQ/s1600/42-28T.JPG> Patrick, I can highly recommend a double using your Sugino crank and only the middle and inner positions.
I am using a BBG Guard-42t-28t on an old XTR 110/74 crank with a wide range 11-34t on a Rawland rSogn (see picture) and another bike with a BBG-40t-26t on a Sugino XD2 crank as the drivetrain on a 650b commuter conversion and really like the result. I basically stay in the middle front ring 95% of the time, but I live in flat country where the hills are less than a 1/2 mile long. For the 42t I am using a ramped and pinned TA ring and on the 40t its a Sugino flat ring with no ramps. Both shift great with a friction downtube shifter. The outer guard is made by BBG and the price is great on those.For a shifting setup I would go one size larger than they recommend. (aka get a 44t guard for a 42t ring) - Dave Johnston On Monday, March 24, 2014 7:53:25 PM UTC-4, Deacon Patrick wrote: > > Thanks, Steve. Maybe I'm using "cross over" incorrectly. I mean the issue > where you don't want to use your small gears when you're in your small > front ring and vice-versa for the big cog. I'm fine with shifting down or > up five gears when I shift the front one. > > With abandon, > Patrick > > On Monday, March 24, 2014 5:45:22 PM UTC-6, Steve Palincsar wrote: >> >> On 03/24/2014 06:18 PM, Deacon Patrick wrote: >> > Oh, I understand that about the triple. But I would prefer to get rid >> > of the cross over. The riding I do is mostly in the 24, but then there >> > are sections of flat and down where pedaling is needed at higher >> > speeds. I'd prefer to simplify things. I spoke with Riv, and it's not >> > too bad to shift things around to a 40-24 set up. I'm going to give >> > that a go. >> >> Before you do, you might want to plot the gearing on Sheldon's gear >> chart. Crossing over on a wide range double can be a real issue: unlike >> the one or two you need to adjust in back, with a wide range double you >> may have to shift 4 or 5 sprockets in back. >> >> >> -- 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 http://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
