Numeric Racing 991 Install Vlog
Burning Brakes
Joined: Nov 2009
Posts: 788
Likes: 499
From: SFla
Just as a follow up to this I ended up getting the 2mm “stiffer” spring and love it. I have no way to compare it to the 1.5 version but I can assure anyone that the stiffer spring is not overly stiff and does not make shifting overly challenging whatsoever. I am by no means a strong guy and have zero issues shifting into any gear. Great mod!
Racer
Joined: Apr 2003
Posts: 295
Likes: 283
From: Kuna, ID
To apply a little physics. The increase in the stiffness of a torsion bar (which a wound spring is) increases as the 4th power of the diameter. 1.5 to the 4th power is 5.06 - 2 to the 4th power is 16. So, the 2.0 spring is about 3 times stiffer than the 1.5.
Would be interesting to hear from the folks at Numeric, who are probably the only ones to be able to try them back to back, what the subjective difference is.
Would be interesting to hear from the folks at Numeric, who are probably the only ones to be able to try them back to back, what the subjective difference is.
