My simple Front Sprocket Fix

[packie]

Just looked at the wire fix again and I'm not sure that would even have an effect. The wire holds the nut to the sprocket right? If it's the sprocket thats forcing the nut over the threads then the wire will just keep the sprocket against the nut as the pair of them work their way off the shaft. (assuming the forces don't stretch/snap the wire).
One foccer used to put a spot weld on the sprocket and grind it off when it needed removing.

It's not the sprocket thats forcing the nut off. I lost mine nut and tab washer and was driving around for 1200 miles unaware of the fact with the sprocket still in place doing up to speed of 100mph. If the sprocket was on a forced outward journey, it would have come off too. The sprocket stayed on due to just a tiny little bit of rust which created a flimst bond. I was able to pull the sprocket off by hand easy enough when I changed my chain and sprockets. So there are no abnormal forces pushing outwards from the sprocket onto the nut.

One posters theory (which I attend to agree with) is that because the nut or shaft is isn't the right size and that there is some play between the two, the nut is vibrating to and fro and the threads are eventually getting damaged and stripping from all the rubbing with the shaft. And the shaft threads are getting damaged too. Your nut has just found a new set of decent threads on the shaft to latch onto. In time, it's possible that they will fail too and so on and so on.

That is why my wire job will do the trick. It's there to keep the nut in position. It can't work it's way outward anymore. On top of that, the wire that is on my sprocket takes a fair bit of force to cut through it with a sharp  pliers. So it is pretty tough enough to handle anything that might want to travel outwards even with a bit of excessive force.

Finally, as I stated elsewhere, I'm not advocating to have anyone to do it my way. I just posted this as a simple fix that I'm confident will work. Find another way like the spot weld or tapping the centre of the shaft to take a nut and large washer like "Unfazed" did. But for God's sake man, do something. Last year I have a horrendus fall at only 20mph and the damage to my body was appaling even with all my gear on. So just imagine if yer bike should lock up solid at 50-60mph and the consequences. Don't say you haven't been warned...not just by me, but by what your nut and shaft is doing at the moment.