It will soon be time to replace the fork on my bike. It's a threaded tube. Are the threaded still available? Seems that all I've been able to find are the threadless ones. I've got a mid 80's bianchi track.
2 tips that I'm sure have been posted, but just in case:
1. If you use electric tape, try using tommy tape. It works just as well and it only sticks to itself, not the bike.
2. Keirin grips - wet a paper towel with soapy water then twist the paper towel down inside the grip. Lube it up real good and it should slide on like butter.

There are plenty of threaded forks available... some really nice track specific ones too. You could switch to threadless if you wanted by getting a threadless fork, a new threadless headset, and a threadless stem, but theres not much point switching if you don't have to.
https://www.spicercycles.com/index.cg...&cat_desc=Road here is a really cheap one
https://www.spicercycles.com/index.cg...cat_desc=Track this one would be real nice though
https://www.spicercycles.com/index.cg...cat_desc=Track or even nicer, a cinelli fork

Edit:
https://www.spicercycles.com/index.cg...esc=Close-outs This looks like a damn good deal to me

https://www.nashbar.com/profile.cfm?c...eid=&pagename=

Says 'road' not track.

https://www.personal.psu.edu/faculty/...cleforsale.htm Cheap Ritchey.