Fork threading

[morton]

Need more threads? A few cross cuts in the fork bearing adjuster, a vice, some WD 40, and lotsa oomph! Git er done! View attachment 664716

How do you secure the fork when threading? I'm assuming you don't hold it but mount the legs in a vice?

 

[Floyd]

Definitely secure it in the vice. And when i say you need some oomph im not kidding. I used a pipe wrench. Although it cut threads surprisingly well, the uncut bearing adjuster was awfully tight on the new threads. Next time i hafta do this i will try oil instead of WD 40 as per suggestion.

 

[WES PINCHOT]

WHY NOT MAKE A COUPLE OF THE RACE FITTINGS FOR SALE AS YOU HAVE SHOWN.
DO YOU HAVE TWO FLAT SURFACES ON THE KNURLS GET A WRENCH ON IT!

 

[Floyd]

Yes. Good eye! I forgot to mention i cut two flat surfaces

 

[Trout]

I like it. Good idea! I actually bought a Chinese die and holder to thread forks. Not disappointed but not really tickled either. It doesn't produce the nice smooth tight tolerances like the factory threads. They are just slightly loose, like deeper and wider, it even takes off some material on the factory threads. Has not caused a problem, it got the job done, but it's definitely not a persision made item. You get what you pay for.

 

[Boris]

Can we see a photo of the inside of the fork bearing adjuster with the cross cuts?

 

[coasterbrakejunkie1969]

I bought one of these for cutting threads on forks. Do i need to get the correct handles for it or will any rod that fits work with this?

https://www.ebay.com/itm/113722010466?campid=5335809022

 

[tacochris]

Man this is an awesome hack, I dig it. I will make one when the time comes.

 

[Rivnut]

I bought the correct 1” x 24 die thinking it would be easy. Not too much $. But big $$$ for the handle for the die. The local TREK shop does it cheap and I don’t have to worry about it. Just shortened and added threads to a girl’s Elgin to replace a funky aftermarket fork on my ‘35 Elgin Oriole.

 

[AndyA]

Good idea! Similarly, I have used nuts as quickie, cleanup dies by cutting slots in the threads with a needle file.