Sprocket carrier stud...
Discussion
Titanium nuts & bolts through steel? Ti doesn't stretch, I guess that when it does shear, it does so with catastrophic failure.
Have a squiz at this, it might provide some explanation?
https://youtu.be/z2rOdv5QXOw
Have a squiz at this, it might provide some explanation?
https://youtu.be/z2rOdv5QXOw
moto_traxport said:
It's happened to me twice.
First time on a Ducati 900SS in the early 90's and recently with a set Dymag wheels on a track R1.
Check / replace / torque / threadlock all of them. File down sharp edges of damage / black paint & then forget about it.
Glad (well not glad, you know what I mean) to hear it’s happened to at least 1 other person!First time on a Ducati 900SS in the early 90's and recently with a set Dymag wheels on a track R1.
Check / replace / torque / threadlock all of them. File down sharp edges of damage / black paint & then forget about it.
Yeah I’m thinking just make it into a weight saving feature... I’m guessing it isn’t a massive loss to the integrity of the swingarm?
I don’t understand what’s happened? Are you saying the stud has come through further than it’s meant to? I can’t see how that would happen as they’re flat on the other side to stop them being pulled through.
Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
SAS Tom said:
I don’t understand what’s happened? Are you saying the stud has come through further than it’s meant to? I can’t see how that would happen as they’re flat on the other side to stop them being pulled through.
Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
I wouldn't be using it either, I'll be interested to see the rear of the sprocket carrier as it shouldn't have happened. Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
SAS Tom said:
I don’t understand what’s happened? Are you saying the stud has come through further than it’s meant to? I can’t see how that would happen as they’re flat on the other side to stop them being pulled through.
Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
On that bike they are just straight studs no mushroom head or any head at all .Had the nut undone itself and that’s what caused the damage?
Either way I definitely wouldn’t be using that swingarm.
Yeah it’s just a straight stud.
It’s been fine for 6 years and 15k miles, never had any issues with it.
The nut was still on the stud exactly where it should have been, so that didn’t come loose.
I think it’s been the whole stud that worked it’s way out then hit the swingarm.
I’ll need to see what damage, is any has been done to the thread of the sprocket carrier.
So the consensus would be to swop out the swing arm too??
It’ll literally the top bit of the casting that’s away (probably a couple of mm of metal) - behind it is all clear space... but I don’t mind changing it, it was my first thought too.
It’s been fine for 6 years and 15k miles, never had any issues with it.
The nut was still on the stud exactly where it should have been, so that didn’t come loose.
I think it’s been the whole stud that worked it’s way out then hit the swingarm.
I’ll need to see what damage, is any has been done to the thread of the sprocket carrier.
So the consensus would be to swop out the swing arm too??
It’ll literally the top bit of the casting that’s away (probably a couple of mm of metal) - behind it is all clear space... but I don’t mind changing it, it was my first thought too.
Edited by the cueball on Sunday 12th July 18:02
If a used swing arm can be had cheaply then I would change it personally, I'm sure some on here wouldn't and will proudly boast of their escapades riding old s
tters held together with duct tape and cable ties but for me it will have been designed to flex and move in a certain way and it might not do that any more and you could have introduced a failure point, better to err on the side of caution in my opinion, plus it looks st now 
tters held together with duct tape and cable ties but for me it will have been designed to flex and move in a certain way and it might not do that any more and you could have introduced a failure point, better to err on the side of caution in my opinion, plus it looks st now Gassing Station | Biker Banter | Top of Page | What's New | My Stuff