Many factors come into play. At the moment I have a sugino crankset from RBW with 24/33/43 rings on it mounted on my Bombadil with a 107mm cartridge bb. Its close but despite the curves everything clears the chainstay. Mind you a 26 small ring would not clear with that bb, so ...
On Tuesday, September 23, 2014 5:04:10 PM UTC-7, Peter M wrote: > > I thought since some of the Rivendell models have bowed chainstays you > could only have so low of a q factor. Or I might be totally wrong too. > On Sep 23, 2014 7:20 PM, "Johan Larsson" <seven....@gmail.com > <javascript:>> wrote: > >> If I were to design a crankset I'd make it with chain ring bolts only >> from the inside, like old SunTour XCM cranks but with a quite narrow gap >> between the outer chain ring and crank arm. That way it's easy to run it as >> a wide double (48/28 for example) with 110/74 or any choice of available >> chain rings and still having a narrow Q-factor. >> >> It's too bad Grant seems to have given up on striving to keep the >> Q-factor low. (?) As far as I can tell, you wouldn't lose anything with >> such a crank, there would only be advantages. If you'd need a wider >> ring-crank arm gap for some mtb style bike with wide tires and a wide cage >> front shifter you can add spacers and run it with three rings. Or one. Or >> four. If you have an old road bike you can keep it lean and narrow and run >> it as a double with almost an unlimited choice of chain ring combinations >> and a Q-factor in the 130 mm range, still using standard chain rings. This >> winter I'm hoping to be able to make such a crank for myself, since I >> finally have access to a lathe and having collected many old cranks I can >> modify and take parts from. >> >> Johan Larsson, >> Sweden >> >> -- >> 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-bun...@googlegroups.com <javascript:>. >> To post to this group, send email to rbw-owne...@googlegroups.com >> <javascript:>. >> Visit this group at http://groups.google.com/group/rbw-owners-bunch. >> For more options, visit https://groups.google.com/d/optout. >> > -- 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.
