dean100yz
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| posted on 22/3/09 at 08:30 PM |
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Snapped right wishbone
As like everyone today I have been out most of the day having a fantastic time.
That was until about an hour ago! Braked from 4th to 3rd in a left hander probably doing about 60ish when i heard a bang and the whole car swerving to
the left!
Smashed my lightweight dynamic wheels, bent the gaz shock, damaged alot of the bodywork. Im just gutted...gutted more than Id ever thought. Ive only
literally just had the 888's fitted and all laser aligned.
It just tops it off. I'll call MAC in the morning, Im gonna take it to them to fix as well as fit my shifter and get my speedo properly working
which become iffy after the flood a month or so back
Anyways a few pics:
Have a whole bunch but think you get the idea. Looking at it the metal looks so thin. I could bend it with my hands. Again whats really done me in is
that I had my mate in the car when this happened but only 2 hours earlier I had my 7 year old boy as we cruised about for 1/2hr.
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speedyxjs
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| posted on 22/3/09 at 08:35 PM |
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You were lucky. That could have been alot worse. Iv never seen a wishbone fail like that before!
How long can i resist the temptation to drop a V8 in?
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dean100yz
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| posted on 22/3/09 at 08:38 PM |
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The kerb is the only thing that kept me out of the ditch! Both wheels are chewed. I can get them done but its just mind blowing - I was gonna do a
trackday in a week or so!
Cant help but lose confidence. Ive spent hours apon hours and money trying to get this bang on and still big things go wrong! It proper went too!
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big_wasa
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| posted on 22/3/09 at 08:39 PM |
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Is that the bush tube thats split ?
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rusty nuts
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| posted on 22/3/09 at 08:39 PM |
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There was a spate of broken wishbones a while back but they all broke at the outer end IIRC. Dodgy or what?
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dean100yz
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| posted on 22/3/09 at 08:43 PM |
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quote:
Originally posted by rusty nuts
There was a spate of broken wishbones a while back but they all broke at the outer end IIRC. Dodgy or what?
Well from what my mate and me can see thats whats gone on mine!
Yeah big wasa bush tube split!
[Edited on 22/3/09 by dean100yz]
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Guinness
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| posted on 22/3/09 at 08:43 PM |
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I'm glad you and your passenger are OK.
Not too impressed with the failure of the 'bone though.
I'm sure MAC1 will sort it out for you.
Mike
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maartenromijn
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| posted on 22/3/09 at 08:43 PM |
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Bad news for the car. Lucky you came out OK.
I'd say drink an extra pint tonight...
BLOG: http://thunderroad-super7.blogspot.com/
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PAUL FISHER
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| posted on 22/3/09 at 08:55 PM |
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The sh*t is going to hit the fan now , Sid Bridge and party will be along soon,this thread is going to be a long one I think..
But a wishbone should never fail like that,time for everyone with a Mac1 to check there wishbones or a factory recall,for safetys sake,and for anyone
else with wishbones of this type of consruction to give them a regular check over,would be a good idea,you were very lucky,has your can ever been
involved to any accident,or hit a kerb hard? previously?
[Edited on 19/05/04 by PAUL FISHER]
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mangogrooveworkshop
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| posted on 22/3/09 at 09:06 PM |
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Not wanting to say to much but we had a bone fail like that except it was made by another manufacturer. I dont think its the makers to blame, Ours
went on the other side from getting whacked in the drain covers that have sunk. The councils seem to have large numbers of sunken manhole covers that
really give the suspension a hard time.
The hard bushes we run dont help the design as there is little flex puting the forces into the chassis or tearing the bones apart.
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Howlor
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| posted on 22/3/09 at 09:08 PM |
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The bush tube looks very thin?
It just shows what can happen so easily, luckily it wasn't 80 on a narrow back road or it could have smarted a bit.
Steve
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AdrianH
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| posted on 22/3/09 at 09:09 PM |
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I must ask a question here as I do not understand how it could snap like that.
Doing a hard left would have, I guess, put that leg of the wishbone in compression, so guessing just that was not the cause.
But if also braking hard left then most of the force would have been on that front offside wheel, that is assuming the front normally does most of the
braking and the nearside would have been trying to lift off the road going left. In that instance that front leg of the wishbone would be pulling it
self apart trying to stop that majority of the car. Just trying to guess how it went.
Did it break on the seam or at the edge of the weld?
Adrian
Why do I have to make the tools to finish the job? More time then money.
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nick205
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| posted on 22/3/09 at 09:36 PM |
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Glad no one was hurt!
I guess that confirms the reason for using seamless tube.
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liam.mccaffrey
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| posted on 22/3/09 at 10:23 PM |
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I have seamless tube for mine, but I never imagined that a failure would occur there!
Build Blog
Build Photo Album
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dean100yz
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| posted on 22/3/09 at 10:28 PM |
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quote:
Originally posted by Howlor
The bush tube looks very thin?
It just shows what can happen so easily, luckily it wasn't 80 on a narrow back road or it could have smarted a bit.
Steve
Well it wern't far off. My local lanes are burnham and rochford. There single lanes with some kerbs in areas and ditches either side and big
fields. The bit where mine went there was some kerbing for about 20ft. If not no matter how good Id like to think I am I wouldnt have saved that. It
shot to the left quicker than I could blink!
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dean100yz
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| posted on 22/3/09 at 10:32 PM |
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quote:
Originally posted by PAUL FISHER
The sh*t is going to hit the fan now, Sid Bridge and party will be along soon,this thread is going to be a long one I think..
But a wishbone should never fail like that,time for everyone with a Mac1 to check there wishbones or a factory recall,for safetys sake,and for anyone
else with wishbones of this type of consruction to give them a regular check over,would be a good idea,you were very lucky,has your can ever been
involved to any accident,or hit a kerb hard? previously?
[Edited on 19/05/04 by PAUL FISHER]
Its kinda my thinking too tbh. Mines factory build and its a few years old now but still its only done about 4500 miles. To the best of my knowledge
its never had a wack. Ive wiped over, tightened and checked most things and not seen anything alarming & I certainly havnt hit anything since
owned (although a few heavy road braking bumps maybe)
Looking at how its gone now, the strength etc I only hope there is a stronger or slightly better design. I really wouldnt want what happened to me
tonight to happen to anyone!
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tadltd
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| posted on 23/3/09 at 12:17 AM |
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First thought is that the 'bone couldn't rotate around the bush, and instead has been flexing around the weld on the 'bone, causing
a fracture at the heat affected zone, which would then allow it to pull out like that during cornering.
Best Regards,
Steve.
www.turnerautosport.com
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britishtrident
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| posted on 23/3/09 at 07:57 AM |
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Looks like one off failure --- probably a number of relatively minor factors involved that in this case added up to a failure.
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procomp
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| posted on 23/3/09 at 08:05 AM |
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Hi
As above the bushes where probably not fitted correctly ( common problem on virtually all using that type of bushing ) And the tube has gone around
the weld that attaches the tube to the outer bush. More than likely due to an undercut on the edge of the weld.
Cheers Matt
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britishtrident
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| posted on 23/3/09 at 08:35 AM |
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Yes indeed "notch effect" due to under cut at the end of the weld was my thinking --- also wouldn't be surprised if the seam of
the tube coincided with the weld to the main wishbone leg. ----add in a binding bush and eventually you might get a failure.
[I] “ What use our work, Bennet, if we cannot care for those we love? .”
― From BBC TV/Amazon's Ripper Street.
[/I]
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zilspeed
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| posted on 23/3/09 at 05:15 PM |
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Hopefully it's just the picture.
However...
The other wishbone does not look dreadfully healthy either.
Coupla other thoughts.
1) The public road is an increasingy bad place to drive a lightweight sports car.
2) My completely standard Viva wishbones don't seem such a bad thing now.
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dean100yz
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| posted on 23/3/09 at 07:38 PM |
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quote:
Originally posted by zilspeed
Hopefully it's just the picture.
However...
The other wishbone does not look dreadfully healthy either.
Coupla other thoughts.
1) The public road is an increasingy bad place to drive a lightweight sports car.
2) My completely standard Viva wishbones don't seem such a bad thing now.
I havnt bothered checking and wont either. Damn thing will sit in the garage until I put it on the trailer saturday early hours to get all repaired
Im gonna get it stripped right down and everything checked over and replaced or strengthened if needed.
At this point im pretty pissed off/fed up. My line of work means I cannot spend days on the car. Most of my nights over the last 4 months have been
getting bits working again. This part is something I have obviously overlooked
I want to drive it now and keep it maintained not keep repairing things that I feel should not fail like they have. There will be many people on here
who disagree im sure but thats my thinking towards this.
I appreciate u2u's that have been sent though. Maybe im just a bit neg'd out. I'll get it sorted. I love the car really &
everytime I drive it I get a smile on the face 
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dean100yz
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| posted on 28/3/09 at 04:58 PM |
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Just got back from a 400 mile round trip to mac. Was great meetin mark and collin and look forward to gettin it back on the road better than ever
added with a new carbon aero screen and rear boot oh and finally gettin that flatshifter fitted. The next few weeks waitin will go very slow...
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martylemoo
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| posted on 6/4/09 at 07:56 PM |
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I do not know why you guys dance around the issues I have repeatedly seen with Mac#1.
It would seem that their cars are built for polishers not drivers. My friend had a factory built Mac#1 and it was absolutely terrible. The build
quality was similar to that of a GCSE student building his first car.
If anyone has a Mac thats actually straight geometrically I would be surprised. The quality of components is just not upto the job and the suspension
technology is non existent.
Come on Mac, sort these issues out, other companies seem to get it right but I have no evidence you have.
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dean100yz
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| posted on 7/4/09 at 10:45 PM |
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Well i spoke to mark today and they seem well onto sortin mine already and i had a page long list! I wont know quality until i start usin mine again.
From seeing others in there i'd say their latest models seem pretty Damn good. I got an early 05 and comparin that to their latest 09's is
like chalk and cheese! I've asked for anything that can be strengthened or uprated within reason to be done. Will get some pic's up when
its all done with the new bits fitted
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