Rothenburg Posted July 13, 2009 Share I appear to have stripped the thread on the backing plate of my XT rear derailer when I replaced the jockey wheels. The shop is now suggesting I buy a new derailer at R1000 !(no surprise)Any suggestions - wondered if anyone had a "broken" XT rear derailer that may have an ok backing plate. Brad Cape Town 083 267 6672 Link to comment Share on other sites More sharing options...
Johan Bornman Posted July 13, 2009 Share A broken derailer is what you need. That thread is 3mm (I think) and to find a helicoil that size is difficult. Also, the plate is too thin for a successful helicoil or vasbyt (thread insert) operation. Link to comment Share on other sites More sharing options...
CWC Online Posted July 13, 2009 Share Have a brand new one for R 650.00!! Link to comment Share on other sites More sharing options...
Tieffels Posted July 13, 2009 Share You could try drill out the thread and glue a nut in the outer side of the plate and try finding a suitable bolt as the original would obviously be too short, but it is a long shot. <?: prefix = o ns = "urn:schemas-microsoft-com:office:office" /> If you have access to a lathe it would be quite easy to turn a bush that does the same as the above, then you could use the original screw. For R1000 you should find a machine shop willing to do this. Link to comment Share on other sites More sharing options...
Guest Big H Posted July 13, 2009 Share You could try drill out the thread and glue a nut in the outer side of the plate and try finding a suitable bolt as the original would obviously be too short, but it is a long shot. If you have access to a lathe it would be quite easy to turn a bush that does the same as the above, then you could use the original screw. For R1000 you should find a machine shop willing to do this. [/quote'] Even a small Nylock nut will do as you will be able to regulate the tension. (Nylock is a self locking nut with a small piece of nylon inside the nut that prevents the nut from turning loose on the bolt. We use them in very small sizes on the model RC helicopters.) Any specialist bolt and nut supplier will be able to help you with the suitable cap screw or bolt. Link to comment Share on other sites More sharing options...
KDEE Posted July 14, 2009 Share Which model XT? Im sure I have a second hand one at home.. Link to comment Share on other sites More sharing options...
droo Posted July 14, 2009 Share For an engineering fix, what you need is a nutsert. They're made by PEM. It's a flat captive nut used in sheet metal work. If you can't find one, PM me and I'll see if I can hook one up. Edit: looks like this droo2009-07-14 06:54:30 Link to comment Share on other sites More sharing options...
Matchstix Posted July 14, 2009 Share nutserts are awesome Link to comment Share on other sites More sharing options...
Flowta Posted July 14, 2009 Share I should have an old buggered one at home (the baking plate is fine) that you can have. That is assuming they are the same/compatible Link to comment Share on other sites More sharing options...
Christopher Brunsdon Posted July 14, 2009 Share Cable Ties - half of my motorbike is held together with those little rascals Link to comment Share on other sites More sharing options...
Rothenburg Posted July 16, 2009 Share Thanks - that would be great - how can I get from you ?I work in Parow and live in Constantia ?RegardsBrad Link to comment Share on other sites More sharing options...
onebynine Posted July 16, 2009 Share Shimano does sell replacement plates so ask... Link to comment Share on other sites More sharing options...
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