On May 29, 7:08 am, jandrews_nyc <jasonaschwa...@gmail.com> wrote: > > 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. > I'm finding that my crankset choices are limited if I want to set > something up as described. I don't want to spring for a TA, but > aren't there other choices out there that would enable me to set this > up? From my limited research, I think Shimano is out.
Hi Jason, The traditional "compact" double has a BCD of 110mm. Since the smallest chainring that will fit a 110mm BCD is a 34T, you won't have any luck trying to squeeze a 28T chainring into any of the usual "compact" cranks that are on the market. You could try using a triple crank with 110/74mm BCDs and then leave out the outermost chainring to make a 110/74 double, but you may have to get creative with chainring bolts and/or spindle lengths. So it looks like you're stuck with either getting a relatively expensive crank like the WhiteInd VBC or TA if you want the 44/28 double. If you're willing to forgo the idea of a double, a cheaper option is to go with mountain bike triple cranks. Those usually run the chainring sizes you require (and then even lower) but may have other undesirables such as general ugliness (!) and a wide Q-factor. I do have a bit of a question regarding your use of the NOS Simplex front derailleur for a 44/28. As I understand, those Simplex front derailleurs are usually designed for much larger chainrings. If so, would they shift smaller chainrings well, being that the curvature of the cage is mismatched? -- 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.
