UK Karting - Notice Board (4-Stroke Karting) : Re: Hub Studs Remove/Replace

Notice Board (4-Stroke Karting)

Re: Hub Studs Remove/Replace
Posted by 'SimonS' on 03 Apr 2014 @ 10:22

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SimonSJoined: December 2004
Total Posts: 4
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Your hub studs should not be a continuous thread.

The centre of the stud should be smooth, so that they locate properly in the rim.

Threads are narrower than the diameter of the bar from which they are made, and the fastening holes are drilled to accept the full diameter of the bar. On an all thread stud, the rim is likely to move until the thread is cutting into the walls of the holes, with a smooth portion the bearing area is a lot more than the sharp edges of the thread.

If the threads are cutting into the walls, then any lateral movement of the wheel is going to rip away the wall and the hole will become elongated. This is most obvious if the wheel comes loose and one finds scraps of aluminium all over the inside of the rim.

Sometimes you will find that the holes for the studs has been cut with a tapered tap, so that the bottom few threads are not cut to their full depth. When you screw in the stud it cuts its way into these threads and locks the stud tightly.

If someone has used thread locker or bearing locker or even instant glue on the thread, then heating the rim should persuade the glue to soften, allowing you to remove the stud. Some of these glues soften between 100 and 200C but I have to raise Loctite 243 Threadlocker to 245C. You have to disassemble the parts while they are still hot!

Message Thread:

Hub Studs Remove/Replace by 'Ernie' (31 Mar 2014 @ 19:43)

Re: Hub Studs Remove/Replace by 'BrianP' (31 Mar 2014 @ 20:01)

Re: Hub Studs Remove/Replace by 'Ernie' (31 Mar 2014 @ 20:07)

Re: Hub Studs Remove/Replace by 'SimonS' << You are here!

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