Johneturbo
|
| posted on 30/6/09 at 03:04 PM |
|
|
Bloody wing stays Grrrrrrrr
Well mine have broken again!
sent them back to mnr today for repair. just hope i get them back in time, as i'm taking the car to Goodwood on friday.
i'll drive it without them if i have to 
p*** off isn't the word
 
Description
[Edited on 30/6/09 by Johneturbo]
|
|
|
|
|
graememk
|
| posted on 30/6/09 at 03:09 PM |
|
|
are they hitting something when the wheels turn ?
|
|
|
smart51
|
| posted on 30/6/09 at 03:15 PM |
|
|
Those are different to my wing stays but I had to replace both of mine. It is not an uncommon problem.
|
|
|
richardh
|
| posted on 30/6/09 at 03:21 PM |
|
|
i've just changed to that style as my last style broke off too.
Don't tell me these vibrate and break also?
Silkaflexed the wings onto the stays and my first drive out since changed was ok.
great chassis, why is it that no other make has this trouble or am i being shortsighted?
Time for a change!
|
|
|
jacko
|
| posted on 30/6/09 at 03:23 PM |
|
|
Just like Andy w 's SNAPPED
|
|
|
Johneturbo
|
| posted on 30/6/09 at 03:25 PM |
|
|
graememk, na not hitting anything i think it's vibration that's doing it.
Smart51 they are a redesign to stop this happening! (they also broke on my last car)
|
|
|
GBaggott
|
| posted on 30/6/09 at 03:28 PM |
|
|
I had a very similar problem on my MNR wing stays.
We welded on some small vertical sections, on you picture, roughly from wher the bolt is up to the top of the tube.
It was some careful filing to follow the contours of the tube etc.
However once welded on the problem has never re-occured
|
|
|
richardh
|
| posted on 30/6/09 at 03:30 PM |
|
|
is it that weld that has gone?
is brazing them any better?
i put 4 rubber washers on (1 either side of each bolt) to help stop vibration
Time for a change!
|
|
|
GBaggott
|
| posted on 30/6/09 at 03:33 PM |
|
|
Ill try and get a picture up later,
After the initial break mine were brazed.
|
|
|
David Jenkins
|
| posted on 30/6/09 at 03:38 PM |
|
|
My solution 
LINKY
|
|
|
GeorgeM
|
| posted on 30/6/09 at 03:40 PM |
|
|
It's not just MNR, lots do it.
Do a search
I think a 3rd stay to the top of the arch would
help though as there is quite a distance
between the two (almost 180 degs)
GeorgeM
|
|
|
PAUL FISHER
|
| posted on 30/6/09 at 04:31 PM |
|
|
MK sports cars did mine like this on a raceleda upright,still going strong after 2 years,simple but
strong..jpg)
|
|
|
James
|
| posted on 30/6/09 at 04:39 PM |
|
|
That's a shame as I thought the MNR was one of the better designs. All the other manufacturers break too!
It's interesting that their's break at this point, whilst the types like the MK above break where the 3mm plate is welded.
What do Caterham do?
Cheers,
James
[Edited on 30/6/09 by 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
|
|
|
Fozzie
|
| posted on 30/6/09 at 04:59 PM |
|
|
After one of mine broke on the way to Newlands a few years back.....
I did a redesign.......and with DLT's mega help, no welding..... mine have not broken since.......
Fozzie 
Fozzie
'Racing is Life!...anything before or after is just waiting'....Steve McQueen
|
|
|
Wheels244
|
| posted on 30/6/09 at 08:36 PM |
|
|
That doesn't bode well -I've got the same design on mine
|
|
|
RichardK
|
| posted on 30/6/09 at 08:43 PM |
|
|
This how I did mine,1500 miles and still rock solid.
Cheers
Rich
Gallery updated 11/01/2011
|
|
|
PAUL FISHER
|
| posted on 30/6/09 at 08:48 PM |
|
|
quote:
Originally posted by James
That's a shame as I thought the MNR was one of the better designs. All the other manufacturers break too!
It's interesting that their's break at this point, whilst the types like the MK above break where the 3mm plate is welded.
What do Caterham do?
Cheers,
James
[Edited on 30/6/09 by James]
Here's a picture of the Caterham wing stay James,looks similar to the MNR one.
 
Rescued attachment caterham wing stay.jpg
|
|
|
PAUL FISHER
|
| posted on 30/6/09 at 08:56 PM |
|
|
Going back to the original picture though,the break is so straight and clean across 2/3 of it,I would put it down to lack of weld penetration,so he
may just have been having a bad day welding that one up,so it may be a one off.
 
Rescued attachment wingstay1.jpg
|
|
|
Johneturbo
|
| posted on 30/6/09 at 09:00 PM |
|
|
Paul, the other fixing on the bolt you can't see had sheered off completly.
here's a pic of other side you can see where it has split
edited to say, 3 of the 4 fixings have split where the bolt is attached.
maybe thicker material is needed.
[Edited on 30/6/09 by Johneturbo]
 
Rescued attachment wingstay2.jpg
|
|
|
PAUL FISHER
|
| posted on 30/6/09 at 09:08 PM |
|
|
Oh dear,doe's not look like a one off then,that looks a real weak point,still think his welding penetration was rubbish though
|
|
|
RichardK
|
| posted on 30/6/09 at 09:13 PM |
|
|
I tend to agree that the welding isn't good enough on that and the other hasn't got enough meat around the bolt area.
Rich
Gallery updated 11/01/2011
|
|
|
RichardK
|
| posted on 30/6/09 at 09:18 PM |
|
|
Maybe this would be a better wayImage deleted by owner
Gallery updated 11/01/2011
|
|
|
Johneturbo
|
| posted on 30/6/09 at 09:18 PM |
|
|
i guess we all have bad penetration days
must say these look good
http://www.locostbuilders.co.uk/viewthread.php?action=attachment&tid=116598&pid=975053
if only i can get them to mate up with my arches
[Edited on 30/6/09 by Johneturbo]
|
|
|
paulf
|
| posted on 30/6/09 at 09:20 PM |
|
|
It looks to me as if the tube is to rigid and the brackets to thin with a sharp angle at the end of the welds as a stress raiser.
I made mine from some tube about 15mm dia and used 3mm x 25 strip for the wing attachment with the joint between the strip and tube doubled up with a
tapered section .They do flex but along the whole length rather than just at the joints between tube and plate.
The car has now been on the road for 5 years with no problems with them so far, although I may be tempting fate by saying so.
Paul.
|
|
|
coozer
|
| posted on 30/6/09 at 09:20 PM |
|
|
Weld there is the flex point and being hard will fracture with the vibration. Nowt to do with penetration.
Mine are totally different to them being for Sierra uprights. IMO the mounting points were just too flimsy. Both of mine broke.
Some thicker plate and filleting have seen them OK for 2000 miles now.
1972 V8 Jago
1980 Z750
|
|
|
.jpg)
