Spring Rates

s30z · 09-03-2010, 11:33 AM

I am in the Indy car chassis design & tuning industry, and have tested out those 2 springs just for my interest. Your numbers seem to be off a little bit.
Here is the actual numbers converted in Kgf/mm on Roehrig Tester.

Regular
F - 7.5
R - 8.1

Nismo
F - 8.6
R - 9.3

Jeffblue · 09-03-2010, 11:38 AM

Quote:

Originally Posted by s30z

I am in the Indy car chassis design & tuning industry, and have tested out those 2 springs just for my interest. Your numbers seem to be off a little bit.
Here is the actual numbers converted in Kgf/mm on Roehrig Tester.

Regular
F - 7.5
R - 8.1

Nismo
F - 8.6
R - 9.3

thanks,

what is that in lbs/in

s30z · 09-03-2010, 12:38 PM

Regular
F - 7.5kgf/mm (419lbs/inch)
R - 8.1kgf/mm (453lbs/inch)

Nismo
F - 8.6kgf/mm (480lbs/inch)
F - 9.3kgf/mm (520lbs/inch)

Jeffblue · 09-03-2010, 01:00 PM

according to their site the tanabe nf210s are softer than the oem springs (if i am understanding this correctly)
Tanabe:
Front: 5.9kgf/mm
Rear: 6.8kgf/mm

compared to nismo/oem below:

Quote:

Originally Posted by s30z

Regular
F - 7.5kgf/mm (419lbs/inch)
R - 8.1kgf/mm (453lbs/inch)

Nismo
F - 8.6kgf/mm (480lbs/inch)
R - 9.3kgf/mm (520lbs/inch)

you're probably worse off with the nismo shocks than the OEM, since the nismo shocks are to be paired with a spring that is Firmer than OEM. am i understanding this correctly s30z?

09-03-2010, 11:33 AM	#1 (permalink)
s30z Base Member Join Date: Aug 2010 Location: usa Posts: 21 Drives: 73 240z 10 370z Rep Power: 16	I am in the Indy car chassis design & tuning industry, and have tested out those 2 springs just for my interest. Your numbers seem to be off a little bit. Here is the actual numbers converted in Kgf/mm on Roehrig Tester. Regular F - 7.5 R - 8.1 Nismo F - 8.6 R - 9.3 Slinky likes this. Last edited by s30z; 09-03-2010 at 11:37 AM.

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09-03-2010, 12:38 PM	#3 (permalink)
s30z Base Member Join Date: Aug 2010 Location: usa Posts: 21 Drives: 73 240z 10 370z Rep Power: 16	Regular F - 7.5kgf/mm (419lbs/inch) R - 8.1kgf/mm (453lbs/inch) Nismo F - 8.6kgf/mm (480lbs/inch) F - 9.3kgf/mm (520lbs/inch)