"Dan Horton" wrote

Gordon, this is YOUR lucky day! You've bumped into the only guy on
the net who has actually measured the spring rate of clutch disks.
Gosh, Subaru, Chevy truck, Ford truck, Suzuki, a few others too! Let's
look at the spring data for an EA81 2WD clutch disk. No trouble, got
it right here on my hard drive.

Le'me see if I can predict what Gordon's reply will say. g

He will say something along the lines that "spring rate" is really not what
he was saying, and that you are needlessly being too picky with the
definition, or wording of your reply. He was, after all, just trying to
keep things from getting too technical.

Stay tuned!
--
Jim in NC