Front mech trim – end of tether…..
is the angle of the mech right? On my mountain bike I have to angle the mech slightly diagonally to stop it rubbing in big/small. Not much, just a mm or 2
kendo954 – Member
you know it has a micro?? shift to move the mech in/out slightly without actually moving the chain from 1 ring to the other, yeah?
can’t do that on the big ring, can you?Posted 4 years ago
Ive been bodging with my front mech for 12 months and its still not right. Theres one last roll of the dice which Id like to take advice on before one of us does the decent thing with a ritual disembowelling cutlass – which I hope isnt me
OK the facts:
Road set up, Shimano 105 double
Chain rubs on outside (ie away from bike) of cage in 2 highest gears ie the 2 small ones 🙂
Adjustment screws are all fine, and more movement has the chain off
Cage is aligned with chain properly
Its currently as good as its been after winding up the cable tension possibly a bit too tight, as in when I shift down at the front to the smaller ring its a bit sluggish to make the shift
The next step is to move the mech either up or down
Ive tried every other variable leaving this as my last shot
The question is which way first?
Any ideas well received, especially informed ones 🙂
I just cant work out where its rubbing and how it will change by moving it in this plane hence the question
But what I do know is that every step of the bodge pathway usually results in double the pain than leaving well alone!
Cheers!!Posted 4 years agoantigeeMember
iamsporticus – Member
Decided to drop it a couple of mm
Thinking some Belgian lager will help the project
good plan going down and some beer – couple of situations would give this a go and this one of them – did it work? must be a million or so 105 doubles that work okPosted 4 years ago
– incidentally I bought a road bike from a well known UK chain (E) and couldn’t get the front mech right – despite it being a Trek that had to be set up by a shop etc etc – worked fine when I put it in correct position still annoyed 5 years later as had to travel to shop to pick up bike especially rather than get deliveredjamesoSubscriber
Sounds like a chainline issue putting the chainset too far over, is your chainset + bb the right spec? Or is the outer plate of the cage bent in slightly? I’ve had a similar issue caused by a mis-shift, plate got a minor bend in it and took a while to notice why the adjustment was out.Posted 4 years ago
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