I have what looks like and original word shift knob. About a year or so ago the plastic insert failed and I was able to scrap it out. I tried repairing with sugru and re threading. But that's not working out. Should I drill out the whole, fill with epoxy drill and thread? The end of the rod is thread and tapered.
Don't you have a lathe? Find a nut the correct thread, turn the outside down and maybe knurl it, then drill the inside of the shift knob and epoxy the metal insert into it. Permanent repair.
I don't think filling the hole with epoxy and drilling/threading it would be a good repair.
Same idea, but his is easier and better! /\
Great idea all. The car is a 1973 innocenti. MINI 1001. I post photos shortly
I was wrong about the taper
1973 innocenti mini 1001 https://imgur.com/gallery/Sbbpt
I cleaned out the hole and its is about 16mm wide (5/8") and the shift rod is about 8mm (5/16").
Quote from: bikewiz on June 16, 2017, 02:11:16 PM
Quote from: Flyinace2000 on June 16, 2017, 08:14:34 AM
I cleaned out the hole and its is about 16mm wide (5/8") and the shift rod is about 8mm (5/16").
It looks like you'll need to run a tap down the shift rod to clean things up. Unless Ino's had metric thread it looks like 5/16 x 18. You may have a problem with the threaded inserts, you can check but I think the pilot hole is 1/2" or so for the 5/16 size. Thickened epoxy or maybe JB Weld may hold it in if it has just a little grip.
I got a 5/8 threaded insert. It was just a smidge to big to screw on to the shift lever, next size down (1/2) wouldn't fit at all. Metric maybe?.
I dug out my tap set (no dies unfortunately) The threads on the 10mmx1.5 matched exactly. The shaft is 8mm wide as measured by my caliper.
What about a coupling nut?
https://www.boltdepot.com/Product-Details.aspx?product=12126
Just closing the loop. No idea why i have strange threads. Ended up getting some fuel line and epoxying it into the hole. Let it sit for 2 hours and screwed it on. Works perfectly.
When I made my shift handle I drilled the center and epoxied a nut into the shaft.
(http://www.widman.biz/mini_pics/small/trunk_on_lathe.jpg)
(http://www.widman.biz/mini_pics/small/finished_knob.jpg)
The one on this '73 is a good looking knob, but it has a plastic insert that has stripped out it's threads - I'm going to put a helicoil in it and see how that does. Pics and such when I get it done.