car breakages

[mckeann]

OSR wheel bearing snapped/seized on me at rockingham, and took the hub flange with it. witness marks on the upright at the top and bottom from where the disc had been grinding against it.


Typically, it took me all day to sort it, and i just managed out for 30 mins at end of the day.

2 laps from the end, i heard a loud crack as i turned left into fast corner, and the car didnt want to turn in. on investigation, it still dived into right handers, but wallowed into left handers


Didnt have time/resource to look into it, and as it still drove, just drove home, but took it easy. Had wheel off tonight, and the front camber bolt has snapped, and just left a stud in the upright not sure how or why yet, but hopeful that i will be able to remove whats left in the upright. just hope its not done any damage to the thread. fingers crossed.


Bit of a bitch of a day to be honest, as i was looking to test the new setup i have, and all i managed to do was shakedown and break things.
Looking on the bright side, better for it to happen yesterday, than at oulton park next weekend.

[woody]

Had wheel off tonight, and the front camber bolt has snapped, and just left a stud in the upright

OSR again?

[mckeann]

no, thats was the front wheel. both drivers sides though.

[robin]

Neil, you almost certainly snapped that bolt because they weren't tightened up. The bolt isn't strong enough to hold up the suspension - instead it relies on the friction between the clamped faces to do that when the bolt is tightened up. You told me on the telephone that the bolts were not quite tight when you looked at them and that you tightened them up - the damage was already done at that point I think.

I have, I think, some extractors somewhere, but TBH, considering the soft alloy upright and the relative hardness of the bolt, I would be inclined to remove the whole hub+bearing+flange and take it to a good engineering place and see if they can (a) drill the bolt centre out and then (b) remove what's left with a left handed screw extractor thingmy. I would have thought Stu would be your best bet!

You need to go around the other 6 bolts and check them for torque. If they aren't torqued up tight then they need to be replaced

You need (at least) two new bolts (the other one will be damaged too). To make sure you get the correct grade I would be inclined to order them from MMC, but as you need them for the weekend maybe you need to borrow some bolts from a car that isn't going anywhere, or maybe you can get some bolts from a good motor factors?

Cheers,
Robin

BTW, the bolts are different - the one nearer the steering arm is M10x65 while the one nearer the front of the car is M10x45 - I don't suppose it's possible you wound in the two bolts back to front when you adjusted your front camber?

PS. Just re-read your post - if some of the bolt is protruding out of the hub face then you might be able to remove with a normal stud extractor - I think I have some of those too.