I've got an old Gitane with Simplex Super LJ derailleurs, and wanted to change the gearing around a bit. 6 cogs in the rear - Maillard Helicomatic :-) I got a 28t cog and removed the 22t cog. 14-28, which maxes it out. Then I replaced the Sugino Mighty Competition (52/42) with a Stronglight Impact (48/34) - did I mention that I had to work with the original French BB cups and find a spindle with a modern square taper? Downtube friction shifters (again Simplex, and very pretty).
What I'm working up to saying is that it all works just fine. My street is 8% just below my house, and I ride up it no problem. http://www.flickr.com/photos/lynnefitz/sets/72157603685138782/ On May 29, 1:41 pm, Steve Palincsar <palin...@his.com> wrote: > On Sat, 2010-05-29 at 07:08 -0700, jandrews_nyc wrote: > > Which brings me to my question...as I'm unsure of how to arrange the > > crankset and what cassette to use in the back. > > I would like to use a 13-30 7speed cassette but am worried about the > > rear derailleur being able to handle that. > > so maybe a 12-28...but then what up front? I'm more concerned with > > commuting, riding out of the city on occasion which includes hills, > > carrying a modest load, etc. I certainly don't feel like using > > anything bigger than a 48t up front and based on how I would like this > > bike to ride..I'm feeling something like a 44t / 28t compact double. > > According to Sheldon, every [I assume he meant current production] short > cage rear derailleur can handle a 30T big sprocket. 7 spd 13-30's very > nice indeed; that's what I have on my touring bike. Figure out what > high gear you want and what low gear you want, then experiment with > Sheldon's gear calculatorhttp://sheldonbrown.com/gears/ to see how > best to achieve those values. I happen to like a high gear of 96-100" > and a low (not counting the granny) of around 31". With a 38x650B > wheel, as I have on my touring bike, 36x48 rings will give me that range > with the 13-30 G cassette. 36x48 is very common on 110 bcd cranks and > shifts extremely well with most front derailleurs. > > An added bonus: using the 7 spd cassette on a 135 hub with a spacer lets > me use all 7 sprockets on the 48T big ring. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.
