emsfactory
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| posted on 19/9/07 at 03:22 PM |
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rear suspension on one bolt?
I am re-doing my rear suspension at the minute.
I have seen some piccies of the older westfields that had the coilover mounted on what seems to be the bolt for the top trailing arm.
Is that right?
would an 8.8 bolt say half inch or so be strong enough to go through the top trailing arm and the coilover and be unsupported at one end?
Has anyone done this?
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Furry
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| posted on 19/9/07 at 03:35 PM |
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your right, on my pre lit westy it uses a 7/16 x 4 inch bolt, to secure the top trailing arm and shock absorber to the axle. hope this helps.
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JAG
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| posted on 19/9/07 at 03:37 PM |
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That's also how it's done on my Stuart Taylor Locost. It's a 12mm diameter bolt.
I haven't checked recently but it was holding up fine last time I looked - maybe 18 months ago.
(goes away to check!!)
[Edited on 19/9/07 by JAG]
Justin
Who is this super hero? Sarge? ...No.
Rosemary, the telephone operator? ...No.
Penry, the mild-mannered janitor? ...Could be!
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emsfactory
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| posted on 19/9/07 at 03:52 PM |
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Cheers chaps.
Ive had a measure and it seems that both the trailing arm bush and the coilover bush are 1/2 inch. I can get bolts that size that are 8.8.
next question would be does the threadlength matter? I would probably end up with something sitting on threads instead of the smooth bolt part?
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another_dom
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| posted on 19/9/07 at 04:39 PM |
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It is not good engineering practice to use bolts in single shear, but will obviously work given sufficient diameter and material grade (the bottom
attachment for my front coilovers is single shear, and it is proving difficult to design a solution). I would not, however, apply a shear load to a
threaded section. Better to get a bolt with the correct shank length and remove any excess threads.
Hope this helps,
Dom.
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emsfactory
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| posted on 19/9/07 at 05:41 PM |
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Had a measure and a look at nimrick. I should be able to get some longer bolts and cut the threaded part down to suit.
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jollygreengiant
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| posted on 19/9/07 at 06:37 PM |
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You think thats bad. The rear trailing arms on AX's/Saxo's/306's/206's/106's are only really held on by 1, YES 1, 8mm
bolt.
Beware of the Goldfish in the tulip mines. The ONLY defence against them is smoking peanut butter sandwiches.
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t.j.
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| posted on 19/9/07 at 07:55 PM |
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quote:
Originally posted by jollygreengiant
You think thats bad. The rear trailing arms on AX's/Saxo's/306's/206's/106's are only really held on by 1, YES 1, 8mm
bolt.
 Yes all French!
I think; If you can avoid single shear; do it! If not use 10.9 or 12.9 instead off 8.8.
It's no driving-fun with your pants full.
I go for strenght and don't push it to the limit.
grtz
Please feel free to correct my bad English, i'm still learning. Your Dutch is awfull! :-)
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paddler20
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| posted on 19/9/07 at 08:59 PM |
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Sorry what, one single M8 bolt in shear holds each corner of a Peugeot/Citroen up ? Do behave
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MikeR
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| posted on 20/9/07 at 09:33 AM |
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look at lots of vans - they have their shock's held on in single shear. Its not good practice, but lots of people do it & it works (me
included - but my car has never been driven yet).
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iank
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| posted on 20/9/07 at 09:52 AM |
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Look at the shocks on all non-hydroelastic classic minis ever made.
Fronts for both upper and lower mounts, rears just the bottom.
Though for non coil over shocks it isn't such a big deal as the loads are much smaller.
--
Never argue with an idiot. They drag you down to their level, then beat you with experience.
Anonymous
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DarrenW
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| posted on 20/9/07 at 12:19 PM |
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i think the rear shocker on landrovers are also held on the same way (if i get what you mean correctly).
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emsfactory
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| posted on 20/9/07 at 02:46 PM |
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I have made up some extra brakets.
Idea being they will go on the free end of the bolt. The're not huge but I thought it would be better to have something there to attach to.
I think that should stop the end of the bolt being able to move.
 
Rescued attachment PICT0283.JPG
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t.j.
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| posted on 20/9/07 at 07:24 PM |
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yep, that's fine
If the bracket (where the tread is in) is really thick about 15 mm or so, the you could do this in single shear.
But how you planning now is better.
grtz
Please feel free to correct my bad English, i'm still learning. Your Dutch is awfull! :-)
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emsfactory
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| posted on 20/9/07 at 09:46 PM |
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I put the brakets on and threw the rear end together. It is sitting at the angle as there are no bushes in the trailing arms.
I think it looks OK. Maybe slightly lower than it was before but not by much.
 
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emsfactory
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| posted on 20/9/07 at 09:47 PM |
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Inside pic
 
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emsfactory
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| posted on 20/9/07 at 09:50 PM |
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With proposed bracket in place. I also spotted I have put the hole to low. Doh.
Note the use of industrial plasticine.
If I do put the bracket on the end will the whole lot tighten up ok?
 
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emsfactory
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| posted on 21/9/07 at 05:42 PM |
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Made a start on re-doing the front suspension today.
Here's a before pic
 
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emsfactory
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| posted on 21/9/07 at 05:43 PM |
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And a current pic
Plan is to remake the front bones and jig the front brakets.
I think the guy who made the chassis did this by eye!
I'm also going to go over a few bad welds and hopefully chop the 'ears' out of the frame so the side panels can be smoother.
[Edited on 21/9/07 by emsfactory]
 
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