Thanks Bobby, That's good to know. I would love to try the 8-speed Alfine, but I don't think it will fit in the QB's 120 mm space in back, and I'm trying to avoid spreading the frame. The 3-speed on the other hand could have a 120 spacing and with my 3 chainrings shifting, I'd still get a good gear range if it all works.
I too wanted to try the Alfine tensioner, but it appears that it attaches to a frame's rear derailleur hanger which the QB lacks. So I'm thinking of just continuing to use the dummy rear derailleur I have on there now. Do you know if they have an Alfine tensioner that doesn't need a derailleur hanger like rear derailleurs that clamp inside the dropouts? I didn't consider that too small a ring up front could create too much torque for the internals of the hub. What two chainring sizes did you use? In wonder if my plan to use a 24tooth granny in front would cause a problem. The whole point of this project is to try to get a low as low as 24F-28R. Basically, I love how the QB rides, bit I don't like single-speeds. I'm trying to get the QB ride with the abilities of a multi-gear shifter. I've succeeded in having it be a wide-ranging 3x1, but now I'm getting greedy, because my current lowest low is 24F-22R. It's weird. I have other great bikes, a few Rivendells even, that I'm really happy with, but there is just something about that Quickbeam. Thanks again, Jim -----Original Message----- >From: Montclair BobbyB <montclairbob...@gmail.com> >Sent: Sep 20, 2010 10:03 PM >To: RBW Owners Bunch <rbw-owners-bunch@googlegroups.com> >Subject: [RBW] Re: Internal 3-speed QB question > >Jim: > >I actually did something similar this past winter, except with an 8- >speed Shimano Alfine internal-geared hub and a front derailleur (to >run a 2x8 setup). I used the Alfine chain tensioner (which costs >about $25 and the spring is super strong, ensuring good chain tension >with the front derailleur shifts. I actually had a triple crank, but >stuck to using 2 of the 3 chainrings in the front (use of the small >crank would have produced a gear so low it could climb a tree and >would over-torque the internals of the hub (according to Shimano). >Having use of the outer chainring provided a nice range of cruising >gears. I'm sure this 3-speed setup will work just fine, and if you've >got a derailleur to spare, great. Otherwise consider the Alfine >tensioner... it's the best one I've used, and I've tried a few. (And >BTW the Alfine hub is superior to any other internal geared hub I've >owned, from Sturmey-Archer to SRAM to Shimano Nexus... The Alfine is >the best. > >Peace, >BB > >On Sep 21, 12:45 am, James Warren <jimcwar...@earthlink.net> wrote: >> Dear RBW Owners Bunch, >> I'm looking for information on Shimano 3-speed internal hubs with the >> following idea in mind. In the following pictures: >> >> http://www.cyclofiend.com/Images/rbw/rr36_pg27.jpg >> >> the rear derailleur shown is not functioning as a rear derailleur. There is >> no cable attached, and the derailleur is only there to take up a lot of >> slack so that I can have vastly different chainrings up front shifted with a >> front derailleur. Right now, the bike has three rings in front, 24-36-48, so >> the bike has three gears total. (In the photo, there are two gears with a >> pants-guard. This set-up has worked fine whether as a 1-speed or 2.) >> What I would like to do is get a bit of gear-shifting in the back through >> use of an internal 3-speed hub. I would like to make the bike an internal >> shifter in the rear but still retain its 3-chainring derailleur system in >> the front, for a total of 9 gears (3x3). Is there any reason that I couldn't >> use an internal 3-speed hub, like Shimano's, but while using this hub, still >> have it work with the dummy derailleur mounted as shown in the photos so >> that it takes up slack and allows me to still do wide range shifting in >> front? >> >> I realize this is a bit complicated (due to rear spacing and lack of >> derailleur hanger in rear) and I'm trying to research it myself, but any >> pointers would be appreciated if it's not too much trouble. >> >> Thanks, >> Jim W. > >-- >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. > -- 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.
