martyn Posted March 18, 2015 Share Posted March 18, 2015 How annoying!So the threadded hole in the base of the seat has stripped. It wasn't even being torqued up tight at the time.What are my options here? Has anyone tried a helicoil on a seat before? The design of the seat makes me doubtful it will work well. There isn't a lot of metal to thread into. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 18, 2015 Member Share Posted March 18, 2015 Could you add a photo... might give a few more options.Jonathan Link to comment Share on other sites More sharing options...
martyn Posted March 18, 2015 Author Share Posted March 18, 2015 I'm not sure a photo will help too much in showing the detail inside the hole.Looking in the other good holes, there are only 3 or 4 turns of thread in them, the rest appears to be some sort of glue (maybe). That’s what I mean when I say there isn't a lot of metal to work with. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 18, 2015 Member Share Posted March 18, 2015 Thanks. Do you have access to the other surface?Jonathan Link to comment Share on other sites More sharing options...
martyn Posted March 18, 2015 Author Share Posted March 18, 2015 No access to the other side. What you're looking at there is effectively set a block in GRP. Although the hole goes much deeper than the metal thread. I've got no idea how the metal is held in place. Presumably bonded in some way. Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted March 18, 2015 Member Share Posted March 18, 2015 Hmmm.... no bright ideas other than an insert. But there were some experts discussing which type for which job a few months ago... should be in the archives, and I think it included something about routine use in aluminium...Jonathan Link to comment Share on other sites More sharing options...
Chris Perry Posted March 18, 2015 Share Posted March 18, 2015 Why dont you phone up Tillett and ask them if they can fix it.May be they can drill it out then epoxy a threaded insert or rivnut in place? Link to comment Share on other sites More sharing options...
martyn Posted March 18, 2015 Author Share Posted March 18, 2015 Yeah, I've been in contact with Tillett via email and Steve has just this minute replied. Seems there is some repair possible if I send the seat to them..."we can cut open the back frame and bond in a new fitting, but this leaves you with a patch over the hole"Sounds quite drastic, but I haven’t followed up for any more info on that yet.Firstly I'm going to try re-tapping the thread. Hopefully that'll clean up whatever thread is left. With the help of some thread locker I'm optimistic that it might result in a secure enough fixture. Link to comment Share on other sites More sharing options...
martyn Posted March 18, 2015 Author Share Posted March 18, 2015 Ok panic over. I ran a tap into it and that cleaned up the thread enough to get the bolt to tighten down. Used a low to moderate torque and instead put a bit of blue thread lock on. Link to comment Share on other sites More sharing options...
Albert Donaldson Posted March 19, 2015 Share Posted March 19, 2015 I had the almost same issue, the threaded boss started turning in the seat and my solution was to inject chemical metal and then tap out, still holding 1 year later.... Link to comment Share on other sites More sharing options...
martyn Posted March 19, 2015 Author Share Posted March 19, 2015 Does seem to be a bit of a weak point. I guess if you have adjustable runners then those threads come in for even more abuse! Link to comment Share on other sites More sharing options...
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