beaver34
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| posted on 21/8/09 at 10:06 PM |
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car broke stearing
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?
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beaver34
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| posted on 21/8/09 at 10:07 PM |
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this is the car in question, lhd quick rack normal suspension setup
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blakep82
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| posted on 21/8/09 at 10:10 PM |
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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...
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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philw
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| posted on 21/8/09 at 10:11 PM |
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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]
Must try harder
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beaver34
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| posted on 21/8/09 at 10:12 PM |
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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
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beaver34
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| posted on 21/8/09 at 10:14 PM |
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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]
seems o.k, its a quick sierra colum with removable boss, i will check that though tommorow
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blakep82
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| posted on 21/8/09 at 10:15 PM |
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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?
________________________
IVA manual link http://www.businesslink.gov.uk/bdotg/action/detail?type=RESOURCES&itemId=1081997083
don't write OT on a new thread title, you're creating the topic, everything you write is very much ON topic!
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beaver34
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| posted on 21/8/09 at 10:20 PM |
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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?
sorry must have missed that off, it looks fine it just isnt, everthing looks perfect, but was only a 10 minute check over as ill annoy the neighbours
if i start whacking it now
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Peteff
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| posted on 21/8/09 at 10:51 PM |
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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
It sounds more like your left calliper has seized or your wheel bearing. Jack it up and see if the left wheel turns freely before you do anything
drastic.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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britishtrident
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| posted on 22/8/09 at 07:47 AM |
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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.
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Richard Quinn
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| posted on 22/8/09 at 07:57 AM |
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"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
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beaver34
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| posted on 22/8/09 at 08:59 AM |
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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
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rusty nuts
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| posted on 22/8/09 at 10:16 AM |
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Might be worth giving it a short test run first , it could be the cause was a sticking caliper that has eased off overnight?
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beaver34
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| posted on 22/8/09 at 11:48 AM |
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problem found,
at least its not that hard to fix, could have been worse though
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coozer
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| posted on 22/8/09 at 11:56 AM |
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Thats bad Another lesson on using ERW for wishbone's I would think...
1972 V8 Jago
1980 Z750
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James
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| posted on 22/8/09 at 12:22 PM |
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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
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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MikeRJ
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| posted on 22/8/09 at 03:39 PM |
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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.
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robocog
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| posted on 22/8/09 at 03:55 PM |
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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]
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Andy S
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| posted on 22/8/09 at 04:27 PM |
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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
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beaver34
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| posted on 22/8/09 at 04:50 PM |
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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
ill check the other side with the strut off and see if this is the case on the other side, thanks for the input
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beaver34
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| posted on 22/8/09 at 06:29 PM |
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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
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flak monkey
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| posted on 22/8/09 at 09:05 PM |
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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.
Sera
http://www.motosera.com
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beaver34
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| posted on 22/8/09 at 09:37 PM |
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What other options have I got wishbone wise?
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MikeRJ
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| posted on 22/8/09 at 11:43 PM |
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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.
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rusty nuts
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| posted on 23/8/09 at 07:15 AM |
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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.
There's been a lot of discussion about crush tubes on the forum , might be worth looking into? I know sorting out the crush tube issue with my
car has made a huge difference to the ride although if I had to do it again I wouldn't skim the bushes .
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