Replacing a rear mech the other day on a Cove handjob steel frame and despite taking care and cleaning the threads out, I ended up threading a good portion of the frame mount without knowing it - It seemed all square and just a little tight , but I now have a rear mech attached but at a slight angle. Its not a major pain but it will be if I need to replace the mech. Any idea how to tackle this ? Is it an LBS job to get the thread re-instated on the frame or is there a fix I can attempt?
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Threaded rear mech holder on steel frame
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Posted 1 year ago #
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Depending on how cross-threaded it is, you could remove the mech and run the screw through carefully from the other side to re-cut the original thread path.
All depends how knackered it is to start with......?
Posted 1 year ago # -
you can drill it out and fit a special thread thing.
http://www.tritoncycles.co.uk/products.php?plid=m4b107s192p1803&rs=gb
Posted 1 year ago # -
If your mech is on at an angle you are going to get horrible shifting. Try taking it off and putting it back on straight.
Posted 1 year ago # -
Thanks for the suggestions folks. Think it may now be pretty knackered threadwise but reluctant to take the mech out in case it means I cant get it on again.
I did try threading it from other side but no joy getting the thread started and also attempted for about a half hour to get the mech on straight, but only way it gets any bite on the threads and stays put is when cross-threaded in at a slight angle. Shifting is actually ok , but not perfect. Will look into the drillign and re-threading thing. cheersPosted 1 year ago #
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