Don't know if this is relevant to your situation but it is possible for two sets of threads to exist in the same hole. This is most likely accomplished when chasing threads for paint etc. I know this to be true as I've done it before, unintentionally of course. If this is the case it should be evident if the shoulder of the derailleur and the edge of the hanger aren't mating properly.
On Tue, Mar 1, 2016 at 8:53 AM, jandrews_nyc <jasonaschwa...@gmail.com> wrote: > Hi > Looking for some advice here as what I got at a local bike shop yesterday > seemed suspect. > A few days ago I noticed I had a broken spoke on my rear wheel. > I took the bike in and as it turned out, the shop replaced 5 rear spokes. > The mechanic seemed to think that the chain must've over shifted pretty > hard into the wheel. I don't remember that happening but I did wreck > slightly a few weeks ago as the snow started falling and the bike went down. > So he fixed the wheel and trued it up. > I asked him about the derailleur hanger tab and he agreed that it's bent. > I told him that it's been bent before about 5 years ago and I had another > mechanic professionally bend it back with the correct tool. At that point > he didn't want to attempt to bend it back since it's been done once before > and the steel could break. > The rear derailleur will not shift well into either the largest cog or the > smallest cog because of the bend. > When shifted into the smallest cog, the chain rubs on the hanger due to > the inward bend and when shifting into the largest cog, the chain skates > due to the angle of the pulley. So we trimmed out both of those cogs and > now my 8 speed cassette is effectively a 6 speed. This is fine for the > moment as I'm winter commuting but want to get it all sorted before spring. > > > What do you all think about the hanger? Will it break? Shouldn't I just > try it? Or is it better to take to a frame shop and have a new dropout put > in? I really don't want to do that and don't even know if I could get a > new one from Riv. > Thanks in advance for your advice. > Jason > Photo below: > > > <https://lh3.googleusercontent.com/-XUgOtyYUy6I/VtWej-5yiRI/AAAAAAAAAlA/La6G6kXnhoE/s1600/der.jpg> > > -- > 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 https://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 https://groups.google.com/group/rbw-owners-bunch. For more options, visit https://groups.google.com/d/optout.
