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PV, 120 (Amazon), 1800 General Forum for the Volvo PV, 120 and 1800 cars |
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Progressive Lowering SpringsViews : 6525 Replies : 29Users Viewing This Thread : |
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Mar 29th, 2013, 17:06 | #21 |
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I had an email exchange with John Parker and his view was that my springs were not faulty as the free length had not changed.
Last edited by Bristol603; Mar 29th, 2013 at 18:27. |
Mar 29th, 2013, 20:45 | #22 |
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I would be inclined to agree with him if it was not for the fact that the car sat much lower on one side and fitting a new set of springs cured the problem. I suspect the one of the springs has just gone soft . On the up side at least you did get a reply from him.
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Mar 29th, 2013, 23:14 | #23 |
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Dai,
I did make exactly that point to John, but he was of the view that it wasn't possible for the spring rate to change if the resting length hadn't changed. I wondered if the metallurgy of the spring wire had changed and so changed its torsional stiffness, e.g. It had lost its temper. However, I'm not a metallurgist either! In the end, if you buy something from someone on the other side of the planet, then your options are limited if something goes wrong. Caveat Emptor. |
Mar 29th, 2013, 23:28 | #24 |
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I will pose the question to my spring manufacture. I'm sure they would be able to explain the cause acuratly.
It would have been a good idea to have put them in a spring tester. I am certain they would have come up with differnt rates. |
Mar 31st, 2013, 02:25 | #25 |
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Can't you test that easily?
Springs off the car and on a flat surface. Known weight on top and measure the deflection. Do the same for the other spring and note any difference. Russ |
Mar 31st, 2013, 20:19 | #26 |
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To do it acuratly you need something like this
http://www.speedwaymotors.com/Deco-H...0-Lbs,231.html |
Apr 1st, 2013, 02:49 | #27 | |
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Quote:
However here you are not looking for an accurate assessment of the spring rate at a given ride height. Just a difference in spring rates between coils from each side of the car. A 20 kilo weight on the spring should deflect it a measured distance, check the other one and if its different then their is a difference of temper in each spring. your not looking to accutately measure this just determine if there is a difference. the heavier the mass the more change in rate will be noted. If you can detect a difference then you have something to show Mr Parker Russ |
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Apr 1st, 2013, 03:00 | #28 |
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Bristol603
It will probably be a waste of time as this particular vendor doesn't appear to hold customer values in high regard. This is not from experience just general consensus. However despite selling what appears to be unique kit, there appears many instances where the kit isn't up to standard or just doesn't arrive. More people need to be aware of actual issues and therefore if you could determine these springs were not of marketable value and JP refuses to deal with it then this forum and the general volvo community need to be aware. Two things will then change, JP and lack of sales Doesn't help you're situation but could for some other person down the line Russ PS Dai is a valued member and provides springs at multiple ride heights-good value too http://www.classicswede.com/amazon-p1800.html |
Apr 1st, 2013, 20:37 | #29 |
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Yes just putting something heavy on them and measureing should do the trick. You would need about a 600-800lb weight to get enough compression to give a reasonable idea of any differnce.
As the spring is progressive it will most likely be the softest part that has gone weak but there is a small chance that somewhere further up is where the problem is. |
Apr 19th, 2019, 14:01 | #30 | |
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