hi guys wandering if you help me,
ill tell the story
just got in from visiting a mate, driving home after 80 miles i brake quite hard before a junction, as i did the wheels locked slightly and the
steering wheel moved alot, anyway to drive the car straight ive now got to hold the wheel 90 degree's to the right, and it was really light and
had no feeling to the steering, pulled over checked everthing was still there etc.... and limped home, was only 1.5miles
ive jacked the car up gave all the front end a good shake nothing is loose or wobbly,
any idea's?
this is the car in question, lhd quick rack normal suspension setup
lol sniff my diff 
er, sounds a bit scary. any photos of the suspension each side itself? is it possible the steering collumn has skipped a few teeth on the rack input
thingy? not sure why hard braking would cause it to skip though...
quote:
Originally posted by beaver34
hi guys wandering if you help me,
ill tell the story
just got in from visiting a mate, driving home after 80 miles i brake quite hard before a junction, as i did the wheels locked slightly and the steering wheel moved alot, anyway to drive the car straight ive now got to hold the wheel 90 degree's to the right, and it was really light and had no feeling to the steering, pulled over checked everthing was still there etc.... and limped home, was only 1.5miles
ive jacked the car up gave all the front end a good shake nothing is loose or wobbly,
any idea's?
if that were the case it would pull to one side like mad, if i let go of the wheel is swerves to the left, seems strange
quote:
Originally posted by philw
quote:
Originally posted by beaver34
hi guys wandering if you help me,
ill tell the story
just got in from visiting a mate, driving home after 80 miles i brake quite hard before a junction, as i did the wheels locked slightly and the steering wheel moved alot, anyway to drive the car straight ive now got to hold the wheel 90 degree's to the right, and it was really light and had no feeling to the steering, pulled over checked everthing was still there etc.... and limped home, was only 1.5miles
ive jacked the car up gave all the front end a good shake nothing is loose or wobbly,
any idea's?
You haven't stripped the splines have you, ie: the steering wheel is tightend up
[Edited on [1250892749R0=103131p: by philw]
hmm, no it wouldn't pull to the side if that was it (i don't think you mentioned it pulling)
you haven't bent the wishbones on one side or anything have you? but the tracking way out or something?
quote:
Originally posted by blakep82
hmm, no it wouldn't pull to the side if that was it (i don't think you mentioned it pulling)
you haven't bent the wishbones on one side or anything have you? but the tracking way out or something?
quote:
Originally posted by beaver34
if that were the case it would pull to one side like mad, if i let go of the wheel is swerves to the left, seems strange
Most likely cause is the the spline coupling hasn't been properly clamped, probable reason is the bolt that clamps the outer part is thread
bound. Either replaced with a set screw (ie full length threaded bolt) or pack it with washers.
Used to see this quite a lot on tintops.
"ive now got to hold the wheel 90 degree's to the right, and it was really light and had no feeling to the steering" and "if I let go it swerves to the left" all sounds a bit more sinister than skipping a spline or two on the column. Check all joints, welds, bushes, ball joint etc on the NSF corner
wheel bearing are fine, everthing seems to work fine, no massive fault is apparant, there is no play in anything, will start stripping it down later today
Might be worth giving it a short test run first , it could be the cause was a sticking caliper that has eased off overnight?
problem found,
at least its not that hard to fix, could have been worse though
Thats bad
Another lesson on using ERW for wishbone's I would think...
Christ!
That's the 2nd one of these we've seen recently isn't it?
It's a Stuart Taylor wishbone? Who's was the other one?
Scary!
Cheers,
James
Don't remember a bush tube splitting, but someone had one of the brackets pull of a chassis a while back.
Be interesting to see if it's split along the seam, or whether it's a crack that's propagated from the weld.
Is it just me or does the bottom wishbone tube look rather small in diameter, especially if you compare to track rod? Hard to tell in a photo I
suppose.
I knew I had seen similar on here before, took some searching to find it...
http://www.locostbuilders.co.uk/viewthread.php?tid=109264
Spookily its the same side and same position!
Was yours a Mac1 as well?
ping mr_bridge -f
Regards
Rob
[Edited on 22/8/09 by robocog]
Looks to me that the wishbone bush end is being pinched by the bracket / bolt and not allowing the wishone to pivot properly.
This will force bending moments into the tube and it will fail no matter what the material CDS ERW whatever.
Andrew
quote:
Originally posted by Andy S
Looks to me that the wishbone bush end is being pinched by the bracket / bolt and not allowing the wishone to pivot properly.
This will force bending moments into the tube and it will fail no matter what the material CDS ERW whatever.
Andrew
all off now,
going to take this opportunity to give the suspension a good going over,
remove it all
check everthing
grease it all up,
and refit
Fatigue failure due to weld, nothing to do with ERW/CDS tubing. Thats what it looks like to me anyway.
Those wishbones are a very poor design as well. Very early ones by the looks of it.
What other options have I got wishbone wise?
quote:
Originally posted by Andy S
Looks to me that the wishbone bush end is being pinched by the bracket / bolt and not allowing the wishone to pivot properly.
quote:
Originally posted by MikeRJ
quote:
Originally posted by Andy S
Looks to me that the wishbone bush end is being pinched by the bracket / bolt and not allowing the wishone to pivot properly.
Essentially too short a crush tube? That would certainly put a lot of stress on that weld.
Hadn't seen the other thread with the Mac1 before, it's lucky there have been no accidents caused by these failures.
Not wishing to be obtuse, but that welding is shite.
quote:
Originally posted by gazza285
Not wishing to be obtuse, but that welding is shite.
The weld hasn't failed, but you can see where the weld has undercut the bush tube, which has. Bush tube doesn't look man enough for the job either.
Is the crack "shiny and fresh"?
I don't think such failure "pop-up"
The crack was there before if there is any rust on it.
regular checking for cracks seems wise....
ive got a new pair of arms coming some time this week, there are a later design, the car has had a fairly hard life been sat outside for nearly 3 years so dont think that has helped matters