AlanG Posted January 29, 2014 Report Share Posted January 29, 2014 The thread has stripped in my original gear knob and I wondered what was the best way to repair it? Alan. Quote Link to post Share on other sites
BlueTR3A-5EKT Posted January 29, 2014 Report Share Posted January 29, 2014 Fill up the damaged thread with araldite, let it set for a day or two then retap 5/16 x 18 unc. (if it is to go on a TR4-6) Or buy a new one? Moss do the spherical black ball with a correctly threaded metal insert so it never pulls off in your hand. Part no: 22B19 (item 27) http://www.moss-europe.co.uk/Shop/ViewProducts.aspx?PlateIndexID=2489#27 Cheers Peter W Quote Link to post Share on other sites
Geko Posted January 29, 2014 Report Share Posted January 29, 2014 (edited) Get a pool billiard black ball (junior/family model are about the same size as the ori gearknob) for 5 £ and make a new thread directly in the mass. Unbreakable - bit cold during winter for sensitive skins though Edited January 30, 2014 by Geko Quote Link to post Share on other sites
AlanT Posted January 29, 2014 Report Share Posted January 29, 2014 Helicoil ? Quote Link to post Share on other sites
ctc77965o Posted January 30, 2014 Report Share Posted January 30, 2014 Hi Alan, I drilled the threaded area to about 1/2 inch, found a UNC bolt same as the gear lever, waxed the bolt with a candle & then used one of these 'epoxy steel' compounds to cast the bolt into the knob. The wax stops it sticking, so once it's cured you can unscrew it, clean-up the glued area and then refit to the car. I dunno if a standard araldite is up to the job, the gear lever gets quite hot and (on my car at least) I am exerting quite a force on the knob (fnarr fnarr) to change gear. Quote Link to post Share on other sites
AlanT Posted January 30, 2014 Report Share Posted January 30, 2014 Will work for a while. Maybe a long while, maybe a short while. I usually think that "glue' is for jobs where you have a significant surface area to use. Things like this want a thread insert of some kind really. Quote Link to post Share on other sites
AlanG Posted January 30, 2014 Author Report Share Posted January 30, 2014 Thanks peoples. I was going to use Milliput as per Peters post but then Alans Helicoil post awaken a dim memory. I had helicoiled a manifold stud hole on my Midget many years ago. Did I still have the Helicoil repair kit, could I find it, was it the correct size, would it work in plastic ............... Well to a fanfare of trumpets......yes, yes, yes and YES!!!!!! Solid as rock, no more embarrassing moments being caught with your knob in your hand Alan. Quote Link to post Share on other sites
AlanT Posted January 30, 2014 Report Share Posted January 30, 2014 Helicoils work fine in plastic. Especially any brittle kind of hard plastic. I have a complete range of Imperial Helicoil kits but no Metric ones. Quote Link to post Share on other sites
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