Hi Mike, I just use a triple derailleur, and have adjusted the screws so that it doesn't shift past the middle ring. For chain length I use the middle ring and largest rear cog +2 links, and that seems to work OK. The stock 40/32 of the QB crank may not give you the full range you want but it is not awful. When it came time for new rings I went with a 28t small ring. If running 700c wheels with fat tires you may not even need 40t on the 'big' (middle) ring and could go to a 36/26 or something. Anyway it's great to hop on the bike and not worry about tying up your pant leg all the time. The guard also slides right over small fallen trees.
-Matt. On Wednesday, April 18, 2012 9:36:41 AM UTC-4, Mike wrote: > > > On Apr 18, 12:14 am, newenglandbike <[email protected]> wrote: > > I've been using the quickbeam crank on my bombadil for years, and have > been > > slowly updating my other bikes with the same. The big ring on a > triple > > has only ever been a dysfunctional, pant-leg eating guard for me > > anyway. Might as well have a real guard there :) > > > > Matt > > > More and more this set-up is making sense to me. I have a pair of VO > 50.4 BCD cranks on my rando bike and while I love the 46/30 rings I > just don't like the cranks. Set-up is a bit tricky as it's much easier > to have issues with chainline and the crank arms hitting the chain due > to the design. Why they didn't update the design a bit, like Rene > Herse did, rather than just make a straight copy of the TA crank is > beyond me. Also, I don't know that I'm a van of the super low q- > factor. > > I sold my QB a while back but kept the cranks. I may use them on my > Hilsen with an 8-spd 11-32 cassette. Two questions: > > 1) What derailer do I use? Double? Triple? > > 2) Are there any issues I need to be aware of when using the big > (middle) ring and the lowest or highest gear? > > I guess I have a third question, how do I determine chain length, just > wrap the chain around the big (middle) ring and lowest gear? > > Thanks! > > --mike > > -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To view this discussion on the web visit https://groups.google.com/d/msg/rbw-owners-bunch/-/Pp8xAw8KmCEJ. 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.
