These small rim studs that grip the tire

[eric318]

Hello all,

I am about to take a nice old Hallman Sun rim to be re-anodized (gold).
I had to remove the little pointy steel stud that were pressed at regular intervals on the inside of the rim edge. See photo.
Some of them are quite damaged and I wonder where to get a full set of them.
I don't even know what they would normally be called, so wasted some time on Google.com.
Any pointers?

Thank you,

E

[maico police]

Gary Bailey talks about them in his book "How to win motocross". I've always been intruiged by them as they'd make for a more balanced wheel than one with rim-locks.
He just used to used some big self-tappers just long enough to not penetrate the inside wall of the tyre.

Going to give it a go myself soon. 

[Canam370]

I've always known them as rim pins. Sen a few rims where the pins are removed from one side to make tyre removal quicker on the trail.

[NSR]

I used to use self tappers only on one side.  I would think you would still be able to buy Rim Pins.  Contact Ballards. 

Just a thought do they use these when they run Bib Mousses?   

[huskibul]

   Imo the pins can be a pain when in a hurry trying to set the bead right ! bultaco/akront used screw's on most mudless rims and were easy ,cant remember seeing any problems with them ! maybe bully got the idea off bailey when he rode  them or vice-versa   

[John Orchard]

Yeh I had a bike in the 80's with 'rim pins'; never had a tyre slip.  I've been thinking about using self-tappers in all my dirtbikes; just getting up the courage to drill the rims lol

[TeeBone]

With a Mousse, there is NO need to prevent the tyre from slipping (not that they do) as there is NO valve to rip out. I have always known them as RIM PINS too.

[KB171]

Peter Shone -  Bultaco Parts in Vic sells them about $20 per set, you need a 4.5mm x .75 tap to suit the threads.
Cheers KB
That size was for the front rim, rear pins are a bit bigger,

[David Lahey]

The Bultaco screws are OK but I wouldn't recommend using standard self-tappers because they are too pointy and sharp and rip the bead to shreds within seconds of getting a flat. Concurrently, the steel wire from the bead winds up around the axle/sprocket and things come to a stop.
My advice comes from first hand experience in 1977 or 78. It was somewhere near the Glasshouse mountains. After getting the remains of the tyre off and unwinding all the wire, I rode to the next checkpoint very carefully on the rim. I remember the day well also because Phil Eldridge stopped and asked did I need any help and I was quite impressed to see someone racing with a prosthetic leg.

[John Orchard]

The Bultaco screws are OK but I wouldn't recommend using standard self-tappers because they are too pointy and sharp and rip the bead to shreds within seconds of getting a flat. Concurrently, the steel wire from the bead winds up around the axle/sprocket and things come to a stop.
My advice comes from first hand experience in 1977 or 78. It was somewhere near the Glasshouse mountains. After getting the remains of the tyre off and unwinding all the wire, I rode to the next checkpoint very carefully on the rim. I remember the day well also because Phil Eldridge stopped and asked did I need any help and I was quite impressed to see someone racing with a prosthetic leg.

That's handy to know; thanks.  I will grind/round-off the self-tappers.

[eric318]

Thank you all,

I found them where I looked for them without knowing what they were called:

http://www.buchananspokes.net/categories/miscellaneous_tools.asp