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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 :finger:

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 :finger:
First time was with rover diffs. :D :finger:

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 :finger:
First time was with rover diffs. :D :finger:

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 :finger: :finger: :shock:


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...

:roll:

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