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Offline sk8norcal

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Newton-meter or Newton-millimeter ?
« on: October 28, 2018, 03:17:19 AM »
I noticed Rally Raid list their spring in Neuton-meter. (ie. standard spring = 100 Nm)
But other manufacturers use newton-millimeter.  (ie. my wilbers spring = 105 N-mm)

Am I missing something? typo?

http://www.rally-raidproducts.co.uk/honda-cb500x-cb500f-cbr500r-tractive-rear-shock

Online Oyabun

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Re: Newton-meter or Newton-millimeter ?
« Reply #1 on: October 28, 2018, 06:11:49 AM »
Typo. Nm is a unit for torque.
Spring rate has N/mm or Kg/mm as standard.

Offline sk8norcal

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Re: Newton-meter or Newton-millimeter ?
« Reply #2 on: October 28, 2018, 04:20:18 PM »
Thanks, that's seems like a glaring typo.

I was confused when reading this thread,
https://www.cb500x.com/index.php/topic,4008.msg38983.html#msg38983



*Originally Posted by Oyabun [+]
Typo. Nm is a unit for torque.
Spring rate has N/mm or Kg/mm as standard.

Online Oyabun

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Re: Newton-meter or Newton-millimeter ?
« Reply #3 on: October 28, 2018, 04:37:39 PM »
I understand, still a typo.
As per my latest information 1 kg is roughly 10N (9.8) and 1m is 1000mm.
Therefore 10kg/mm is 100N/mm, or 10*10^5N/m, or 100kN/m.
Also Nm and N/m is not equal, one is a unit of torque (1Nm is 1N force at 1m from the shaft centre) , the other is spring rate (e.g. 100N of force is needed to compress a spring by 1mm.

Offline sk8norcal

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Re: Newton-meter or Newton-millimeter ?
« Reply #4 on: October 29, 2018, 06:05:12 AM »
got it. Thanks for the clear info!

Offline sk8norcal

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Re: Newton-meter or Newton-millimeter ?
« Reply #5 on: December 11, 2018, 07:58:07 AM »
*Originally Posted by Oyabun [+]
I understand, still a typo.

ok, this is bizarre to me.
Here's Ted Porter referring to springs in Neuton-meter (3:36)



 


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