When I went to the rivy chainrings on my Hilsen, I could do NOTHING to get the microshift FD to keep from slipping off the large ring; I ended up switching to a XT and it's been hunky dory since.
Money vs time vs guns vs butter vs carbohydrates I guess cc On Tue, Jul 22, 2014 at 11:50 AM, Will <waller.will...@gmail.com> wrote: > Interesting. I was thinking a spacer to move the cassette in or out, not > re-spacing the chain rings. But if you have a good line, that's not a > solution. > > There's an interesting discussion here on shifting issues with low bottom > bracket bikes. > > http://www.peterwhitecycles.com/atlantis.asp > > It might give you some ideas. Note that Peter recommends a 12 tooth > differential for shifting. Also note the smaller granny ring. That > particular issue might play if using a 26 tooth causes a longer spindle > recommendation to avoid chainstay interference. > > > > On Tuesday, July 22, 2014 11:37:00 AM UTC-5, Jim Bronson wrote: > >> The chainline is dead centered on the middle ring - I had the LBS check >> that and they performed the check while I was present. The 113 BB is the >> one that is recommended by Sugino for the crankset. If I added a spacer >> between the middle and big ring, it seems like it would lead to chain >> suck. But I am open to the idea. >> >> I have bar-ends, the front derailer is not indexed. The rear is but I am >> not sure how this would make a difference. >> >> >> On Tue, Jul 22, 2014 at 11:27 AM, Will <waller....@gmail.com> wrote: >> >>> What's the chain line look like? Maybe you need a spacer (or remove a >>> spacer) for the cog-set and also, a different length spindle/BB cartridge. >>> I mention adjusting chain line, since you have already worked on derailer >>> limits and it may be the chain wheels are slightly out of position for the >>> limiters. >>> >>> Alternatively, you could go to non-indexed shifters. >>> >>> On Tuesday, July 22, 2014 10:13:40 AM UTC-5, Jim Bronson wrote: >>>> >>>> I have had my Rivendell for approximately 9 years now. During this time >>>> I have continually had problems with overshifting of the front derailer. >>>> This has continued through 4 different cranksets, two or three different >>>> front derailers, different brands of chains, different casettes, different >>>> LBSs tinkering with it and so forth. Not to mention my own tinkering. >>>> I've theorized that maybe the seat tube angle on my bike is different than >>>> others due to the large size of my bike - 69cm, but I don't really know. >>>> >>>> I had given up on the problem and just rode the chain back on to the >>>> big ring if it came off that way, or stopped and put it back on the granny >>>> if it came off that way. >>>> >>>> I just recently as in last week switched to a Deore SGS derailer, so >>>> super long cage. With so much longer of a cage, it pulls the chain back a >>>> lot father now when it comes off the big ring and I am afraid of something >>>> catastrophic happening like the chain getting tangled up in the spokes. So >>>> there is a renewed urgency to do something about it. >>>> >>>> The current front derailer is a Campy Racing T, which from what I read >>>> on the Internet is supposed to be good at shifting compact triples. I am >>>> currently running a Sugino XD600 46/36/26 crankset and also using Shimano 9 >>>> speed bar ends. If it makes a difference. >>>> >>>> I read something on the 650B list about bending in the leading tip of >>>> the outer plate to prevent overshifting. I really don't want to trash a >>>> perfectly good front derailer but I'd be willing to try it if there was a >>>> reasonable expectation of it being successful. To quote: >>>> >>>> "On my last successful Ritchey crank build I used an NOS first >>>> generation Shimano deer head with said alignment and the leading tip of the >>>> outer plate bent in to better keep the 9spd chain from over shifting when >>>> coming back up onto the big ring." >>>> >>>> Or is there a different derailer model I should be using? I'm open to >>>> it. >>>> >>>> -- >>>> Keep the metal side up and the rubber side down! >>>> >>> -- >>> 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. >>> To post to this group, send email to rbw-owne...@googlegroups.com. >>> >>> Visit this group at http://groups.google.com/group/rbw-owners-bunch. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> >> >> -- >> Keep the metal side up and the rubber side down! >> > -- > 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. > -- "I want the kind of six pack you can't drink." -- Micah -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. 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