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Those with retained springs...
Posted: Fri Feb 23, 2007 8:25 pm
by Michele
...any failure/crack of the upper spring seat or retainer itself?
I'm having my retainers made,a 2 x discs up and 2 x bars down and 2 x bolts through...
I'm wondering if/when the spring stretches...what kind of strain does it put on the spring seat?
Anybody experienced failures of some kind in the long term?

Posted: Fri Feb 23, 2007 8:52 pm
by DK
I have never had any troubles and i dont think the strain is all that much..
I only use a couple of hose clamps on the upper rears and only break them occasionly...
Posted: Fri Feb 23, 2007 9:00 pm
by ISUZUROVER
Michele - if you are worried it is pretty easy to work out the loads. What is your spring rate and how far do you expect the spring to stretch.
e.g. 150lb/in springs, and let's say you get an ABSOLUTE maximum of 2" stretch, then that would be a load of 300lbs (but I doubt you would ever get that much stretch).
Is it warm and sunny there?
Oh and btw - I will be back in europe soon - pm or email if you want to catch up.
Posted: Fri Feb 23, 2007 9:48 pm
by Michele
NRC4304 RR HD Rear 170 lb/inch...I need to bring the truck out and measure the droopout...
It was warm and sunny until yesterday,but it's the warmest winter anyway.
I just wear a T-shirt and fleece
Oh and btw - I will be back in europe soon - pm or email if you want to catch up
Damn,that's good to hear!!!
Happy to meet again,sure!
Check your PMs.
Posted: Sat Feb 24, 2007 5:47 am
by red90
The extension forces will be less than the compression forces, so don't worry, be happy.
You could always get one of these...
http://www.x-eng.co.uk/X-Spring.asp?MID=57
Posted: Sat Feb 24, 2007 10:26 am
by KiwiBacon
Wouldn't your max extension force be the back half vehicle weight leveraged off the opposite side spring?
This would be shared by the spring (extension*rate as Isuzurover said) and the shock will take the rest (if it's topped out).
But yeah, always much less than maximum compression force.
Posted: Sat Feb 24, 2007 9:35 pm
by Maggot4x4
I have bent the upper spring purch twice, it is now re-enforced
Posted: Sat Feb 24, 2007 9:37 pm
by shakes
Maggot4x4 wrote:I have bent the upper spring purch twice, it is now re-enforced
but you got those silly big diff's hanging off yours

Posted: Sat Feb 24, 2007 9:38 pm
by Maggot4x4
shakes wrote:Maggot4x4 wrote:I have bent the upper spring purch twice, it is now re-enforced
but you got those silly big diff's hanging off yours

First time was with rover diffs.

Posted: Sat Feb 24, 2007 9:44 pm
by brooksy
Maggot4x4 wrote:shakes wrote:Maggot4x4 wrote:I have bent the upper spring purch twice, it is now re-enforced
but you got those silly big diff's hanging off yours

First time was with rover diffs.

You had some crappy plates though Ash, besides the 10 winds of fencing wire is still working OK on your Rangie last I saw it in my shop a couple of weeks ago
brooksy
Posted: Sun Feb 25, 2007 1:04 am
by red90
Yes, but are they bent from the spring pulling or pushing on them???
Most I have seen are from people using longer springs that bottom out before the axle can hit the bump stops.
Posted: Sun Feb 25, 2007 3:33 am
by Michele
(
in the meanwhile,in another galaxy...)
I got my retainers and fitted them this morning.
So far I managed to bend the lower bar while tightening the bolts...
...not bad,considering I have yet to test it out in the field...

Posted: Sun Feb 25, 2007 7:44 am
by cooter
ISUZUROVER wrote:Michele - if you are worried it is pretty easy to work out the loads. What is your spring rate and how far do you expect the spring to stretch.
e.g. 150lb/in springs, and let's say you get an ABSOLUTE maximum of 2" stretch, then that would be a load of 300lbs (but I doubt you would ever get that much stretch).
Is it warm and sunny there?
Oh and btw - I will be back in europe soon - pm or email if you want to catch up.
2 inch stretch

mine stretch 4 inches then bend the 5mm flat bar retainers