Does anyone know the spring rate of the Dalton black-green primary spring?

[norwegian]

Does anyone know the spring rate of the Dalton black-green primary spring?
The preload is 62 kg and the end force is 131 kg, but what's the spring rate?

 

[Srxspec]

Why do you want to know the spring rate? You really only need to know the preload (engagement force) and the end force (top rpm force). In 25+ years of clutching, I have never picked a spring because of it's spring rate.

 

[norwegian]

That's because I need to know at what rate it allows the upshift. A rate of 1,75 (maxx perf purple for example) is too soft/low for my application, making it load just a little too much and having too slow of a backshift.

 

[Srxspec]

I understand what you're trying to do or saying now. I would suggest an email to Dale @ Dalton as he's probably the only one who may be able to answer your question.