There are other possibilities: http://www.mtbtandems.com/index.html
They import the Midleburn cranksets w/ 2 x 9 setups. ie. 27 x 42 You could buy a Quickbeam specific crankset from Riv. Sram has a couple of 2 x 9's as well. Cheers! On May 29, 2010, at 10:21 AM, benzzoy wrote: > On May 29, 7:08 am, jandrews_nyc <[email protected]> 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 [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. > James Valiensi, PE Northridge, CA H818.775.1847 M.818.585.1796 -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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.
