Okay, all I have is an "after" picture, which is not that good. Apparently a very significant aspect of the alpina-d derailer is my complete inability to take a good picture of it.
http://www.dropbox.com/gallery/7568778/1/Samuel%20Hillborne%20-%20derailer%20routing?h=aad701 Yours, Thomas Lynn Skean On Jul 16, 9:25 pm, Thomas Lynn Skean <thomaslynnsk...@comcast.net> wrote: > Yep, when I look at it now and ignore the channel (I'm friction-shifting in > the front; I have no reason to follow an STI-intended cable path), I see what > effect routing over the nubby-thingy will have; it'll change the angle of the > cable's path to the mechanism in such a way, it appears, that would lower the > amount of derailer travel for a given amount of cable pull-or-release, > "slowing" the shifting. I certainly see no downside there. When I shift in > front, deliberate and controlled are much more important than fast. And a big > reason I prefer friction shifting in the front is to be able to "trim" the > chain angle; being able to do that with more precision is also a plus. > > It might even reduce/eliminate the interference that inspired this thread in > the first place. > > Before-and-after pictures (*good* ones this time) to follow. > > Thanks, William. > > Yours, > Thomas Lynn Skean > > On Jul 16, 2010, at 6:24 PM, William <tapebu...@gmail.com> wrote: > > > > > No 180 bends. Just over the knub and over the bolt and tighten. Just > > like in the picture. If there is a channel that appears to run under > > the knub thing, that is the alternate routing for STI and a triple. > > > On Jul 16, 3:47 pm, Thomas Lynn Skean <thomaslynnsk...@comcast.net> > > wrote: > >> Thanks for that info, William. I'll look at it again tonight. > > >> Any idea what role that channel is supposed to play? My vague recollection > >> is that I'll need to bend the cable 180 degrees to go over the nub and > >> through the channel. If so, that seems "harsh" somehow. > > >> Yours, > >> Thomas Lynn Skean > > >> On Jul 16, 2010, at 4:59 PM, William <tapebu...@gmail.com> wrote: > > >>> Here's the photo of the cable routed correctly on a not-identical > >>> derailleur. > > >>>http://softsolder.files.wordpress.com/2009/07/dsc03170-front-deraille... > > >>> On Jul 16, 2:57 pm, William <tapebu...@gmail.com> wrote: > >>>> I agree it's not a problem, but from your photos it does appear that > >>>> you have your cable routed wrong. > > >>>> In that third photo, the anchor bolt thread into the derailleur arm. > >>>> On the arm is a bump, an appendage, a knubby thing. The cable is > >>>> supposed to wrap OVER that knubby thing. From the picture, it looks > >>>> like you have it neatly tucked UNDER that knubby thing. > > >>>> With the cable routed the way you appear to have it, a couple things > >>>> are going to happen. The potentially good thing is that your shifting > >>>> will feel faster. The derailleur will move farther with a smaller > >>>> move of the shiftlever. The bad things are twofold. One is you are > >>>> putting more bending strain on the cable routed that way, so it will > >>>> fail sooner. Whether sooner is 9 years instead of 10, or 1 year > >>>> instead of 10 is hard to predict. The second thing is that with the > >>>> faster moving derailleur geometry, it's trickier to trim out the rubs > >>>> with delicate shifter moves. > > >>>> I recommend you confirm that the cable is routed correctly, completely > >>>> independent of whether it touches that cylinder. > > >>>> On Jul 16, 2:41 pm, Thomas Lynn Skean <thomaslynnsk...@comcast.net> > >>>> wrote: > > >>>>> Here are really grainy photos of my setup: > > >>>>>http://home.comcast.net/~thomaslynnskean/site/?/photos/ > > >>>>> first picture is when the chain is on the middle chain ring, (barely) > >>>>> showing the cable straight and clear > > >>>>> second picture is when the chain is on the inner chain ring, (barely) > >>>>> showing the cable bending around the black cylinder > > >>>>> third picture is simply showing how the cable is anchored, which is > >>>>> apparently the way the derailer intends to have the cable anchored, in > >>>>> that there is a slight "channel" under where the anchor bolt squeezes > >>>>> and the cable is lined up with it > > >>>>> As I say, the interference appears to affect nothing. So (especially > >>>>> knowing that the black cylinder need not roll at all) I'm fine with it > >>>>> as it is. And that's good, because I can't see that I can avoid the > >>>>> interference. > > >>>>> Thanks for helping me look into this! > > >>>>> Yours, > >>>>> Thomas Lynn Skean > > >>>>> On Jul 15, 8:36 pm, Ginz <theg...@gmail.com> wrote: > > >>>>>> I had a look and, yes, my cable touches the black cylinder as well. > >>>>>> I, too, find it a bit odd but seems harmless. > > >>> -- > >>> 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 > >>> athttp://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 > > athttp://groups.google.com/group/rbw-owners-bunch?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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