Cracked Fixed Pivot

Welshman

Registered user
Joined
Aug 16, 2005
Messages
1,498
Reaction score
0
Location
Johannesburg
Never seen this before, cracked straight through.... but it has a history... a couple of years ago, I did a quick gearbox rebuild prior to the 2,500 km long weekend trip to Viols Drift bash (and didn't torque the fixed point properly on assembly :blast ).... on the return leg, we stopped to replace a broken alternator belt in Springbok... Raka noticed some slop in the rear end while I did the belt, the fixed pin was unscrewed by about 8 to 10mm, (pictures showed it was like this since before Pofadder on the way down :eek:) I screwed it in and torqued it to 160Nm by standing on the 12mm allen key (loaned from a triumph rider) I guess than was when the damage started, it is now cracked through... so I reverted to a slightly worn spare :beer: so not a bitch a:beer:bout the failure, just wonderred if you had seen it before. :augie





 
I would say standing on the Allen key has over torqued it. It looks like the thread has carried on in and the shoulder of the bolt hasn't which has caused the bolt to crack. I guess your lucky the threads didn't strip in the swing arm.
 
I would say standing on the Allen key has over torqued it. It looks like the thread has carried on in and the shoulder of the bolt hasn't which has caused the bolt to crack. I guess your lucky the threads didn't strip in the swing arm.

That's exactly what I was thinking. Must have applied some serious torque to get that effect. Do you have a torque wrench built in to your foot? That's handy:thumb
 
That's exactly what I was thinking. Must have applied some serious torque to get that effect. Do you have a torque wrench built in to your foot? That's handy:thumb

Well the allen key was 130mm long, I weigh about 125kg so 125 x 9.8 x 0.13 seemed close enough to 160Nm, on a Sunday morning in the middle of a semi desert 1400km's from home (we were back for a pub brunch 11:00 the next morning:friday) the effect apeared 2 years later, but I torque religously, so I still go back to that event being the cause...:beer:
 
you could with a bit of scaffolding pipe on the end and a sixteen stone bloke hanging off it.:aidan
 
you could with a bit of scaffolding pipe on the end and a sixteen stone bloke hanging off it.:aidan

16 stone, farkin lightweights, the beauty and the beast... one year later in Lesotho around 1,5 miles AMSL, frigging cold front that night rain and then -7C



If you could zoom in on this one she is unscrewed already... we noticed it a few hundred miles later.....

 
20120922_103841_zpsdf73776c.jpg


God the old GSA is a beautiful thing.
 


Back
Top Bottom