Quote:
Originally Posted by Ultramaroon
Right? I was hoping to get there. Not as a gotcha or anything, mind you. Discussion is free and interesting.
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10 Kilogram/millimeter = 559.974147 pound force/inch
So, actually the swift springs are not exactly 10k.
557 pound force/inch = 9.946888 Kilogram/millimeter
Yes, it's borderline pedantry to argue about, but one could assert that if they wanted to claim it was "exact", it'd be within 1 pound force/inch... So 559 or 560, certainly not 557.
Honestly, with a spring, I'd be more concerned about the standard deviation. And that speaks to earlier posts in this thread about testing a bunch of Sprint's springs. They certainly are not all exactly the same, that is statistically impossible given metallurgical and manufacturing variance. With a test across several springs of the same spec, we could establish if the STD is within a reasonable % - and that would speak to the overall quality of Swift in some objective manner.
The same test should be done with Taiwan brand x and y. Then we can compare STD across brands for an even more informed opinion.
If you wanted to extend the test, you'd also include some simulated mileage on a dyno and then retest to see how stable the metallurgy of the springs is: 1) how much has their rate changed over time 2) what is the STD on that change across springs.
Could be very fascinating and revealing data.