My new rear springs have arrived. They have a free length of 410mm and a rate of 30.2mm / 100kg (if my maths is correct in converting 185 lb/inch). The existing rear springs, I have already removed the helper springs, are 350mm free length and 16.7mm / 100kg. I don't know what the sprung weight of the back end is, I am going to try and calculate it by measuring how much the springs are compressed compared to their free length. When I had it on a weigh bridge the back axle was 760kg.
Gut feeling says it will sit a bit higher but will be much easier to flex.
Hope to get them fitted this weekend.
Ian
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