PistonHeads.com Forum

SR3 Upright "life"

Author
Discussion

arnoldhar

Original Poster:

37 posts

112 months

Tuesday 28th August 2012
quotequote all
Guys, please read this and take it on board. today i had a very lucky escape to what could have been a very hard hit, while going through Hawthorn bend on the Brands GP circuit i had a rear upright failure, the mid corner speed is well over 1oo MPH and i nearly lost the out side rear wheel!. Lesson please take a look at the age of your upright, this could have been a hell of a lot worse.

Ron V

83 posts

58 months

Tuesday 28th August 2012
quotequote all
At first glance of the rather fuzzy picture it looks like it was the Hub that failed??

The Upright looks to be fine.

How many hours were on that Upright/Hub???

Ron

radical78

292 posts

51 months

Tuesday 28th August 2012
quotequote all
you cant just life them in hours a bumpy circuit like croft or coombe will fatigue them quiker than a smooth one like silverstone + kerbs contact with other cars etc

arnoldhar

Original Poster:

37 posts

112 months

Wednesday 29th August 2012
quotequote all
You are correct it was the hub that fail, by upright I was referring to the up right assembly, you can see its sheared off. As for hours of use very hard for me to say as I did not purchase the car from new, apologies for the poor picture adrenalin rush when changing in out, wanted to get back out.

BertBert

10,194 posts

118 months

Wednesday 29th August 2012
quotequote all
The odd thing is how you managed to break it when you were driving so slowly.

I don't understand.

Bert
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arnoldhar

Original Poster:

37 posts

112 months

Thursday 30th August 2012
quotequote all
That's because your not allowed to overtake on bends and you were in front of me!

minitici

197 posts

112 months

Thursday 30th August 2012
quotequote all
So did the stub axle part of the outer CV also shear off?
If it didn't then surely the remains of the hub would have been held by the stub axle and hub nut?

arnoldhar

Original Poster:

37 posts

112 months

Thursday 30th August 2012
quotequote all
the stub axle was in one piece as the drive shafts on the SR 3 are floating, the hub snapped just at the end of the shaft! Thus detaching from the upright, I then of course lost drive as there was nothing for the drive shaft to turn

Ron V

83 posts

58 months

Thursday 13th September 2012
quotequote all
Hi Arnold,

How do you tie your car down to your trailer?

Thanks,
Ron

arnoldhar

Original Poster:

37 posts

112 months

Friday 14th September 2012
quotequote all
Ron I do use the radical centre tie downs, the are however fully inserted with locating bolts. The up right that broke on me was the rear left and it was six years old, so in my view the two real factors there are load and age., and now they are all new!

Ron V

83 posts

58 months

Friday 14th September 2012
quotequote all
Thanks Arnold. I am sure age was mostly to blame too.

Did you replace the entire upright or just the Hub?

arnoldhar

Original Poster:

37 posts

112 months

Friday 14th September 2012
quotequote all
replaced the lot ron