Okay..... so I've spent a couple days testing the springs I ordered. 40g, 45g and 60g. Testing with a Cherry MX Clear switch wired to a KBParadise V60 Mini. Granite DSA keycap. Nickel stacking until actuation.
Stock spring = 14 (70g)
40g spring = 10 (50g)
45g spring = 11 (55g)
60g spring = 14 (65g)
Same setup but with a Kailh Black switch.
Stock spring = 12 (60g)
40g spring = 8 (40g)
45g spring = 9 (45g)
60g spring = 10 (50g)
So basically the advertised weights are just wrong no matter how you look at it. The 40g and 45g springs may have been measured by someone with nickels and measured the actuation force of a linear switch. But the springs aren't even advertised in any linear scale as the 60g spring is significantly weaker in relation to it's claimed weight. Very difficult to give accurate advise on which spring you would actually want.
Same setup but with a Kailh Black switch. Stock spring = 12 (60g) 40g spring = 8 (40g) 45g spring = 9 (45g) 60g spring = 10 (50g)
So basically the advertised weights are just wrong no matter how you look at it. The 40g and 45g springs may have been measured by someone with nickels and measured the actuation force of a linear switch. But the springs aren't even advertised in any linear scale as the 60g spring is significantly weaker in relation to it's claimed weight. Very difficult to give accurate advise on which spring you would actually want.