Have you tried just changing the rubber joint? We have them in stock if you have trouble finding supplies locally. Else I have 2 boxes of old parts, but you are better off changing to a new one. We also have the new non-rubber mechanical joints you might want to consider too.

Hello, Stan,

I’ve seen these joints earlier in my career, but can’t remember their exact construction. However, I think that boards of that vintage would have used rubber directly moulded to the steel.

As a suggestion, get a hacksaw and hold the bad end of the rubber in a vice, whilst carefully hacking through the good end of the rubber until you get to the steel core. Remove as much rubber as necessary. You should be able to see if the rubber is moulded around the steel or whether the rubber is moulded around a steel female nut, into which a steel male is threaded.

If the rubber is moulded direct to the steel, you will not be able to recondition the UJ, only replace it (as you suspect).

If the rubber is moulded to a female nut, you might be able to unscrew the male from the female, using something like WD 40 and it will probably take considerable time and effort to break the parts free. As SurfConnect says, the latest style uses rubber moulded around a female nut, into which a male shaft is Loctited and screwed.

Hope this helps.

Thanks guys, I guess I will just have to stop being lazy and make something.
Cheers,
Stan.

These pins will unscrew. They are held in with Loctite, you will have to heat the pins a little with a blow torch to brake the Loctite seal. Use vice and multi grips. Boge rubber joint.

Chris, this era of Mistral mast track 1983 - 1987 has no option for a separate tread.

All sorted! I got a new threaded rubber UJ and turned a couple of
stainless steel bolts to match the pins in the original part and super-glued them in.



Also I made a threaded aluminium nut that fits into the old ali mast track so if
I want I can put a brand new mast foot on the old board.



Thanks for all your suggestions - they got me out of thinking I had to find an original part. Now I can carry on using the board either with the old rig or a new one.
Spoilt for choice!
Stan.

try the rsx uni joint i think its the same i use it on my mistral one design and it works