has been here 4ever
Posted 15 May 2018 - 02:36 pm
I received a set of Ohlins linear springs, sate 0,80, but when I compared them to originals they seemed more or less same spring rate.
Existing springs are progressive, but I now suspect they're not the originals (2003 model) ...any clues, anyone ? Anyone having an OEM spring lying around and a vernier to measure wire thickness ?
full o shoite
Posted 15 May 2018 - 05:04 pm
2003 oem spring are progressive - two rates : 6.85 N/mm and 9.32 N/mm.
Easy to check : place vertically, get height, then put a weight on top to get a 10mm less height.
This gives the rate x 10.
For the oem spring, weight should be 6.85kg.
Or get a known weight (10 kg), get the height difference then compute the rate.
(1kgf = 9.806N - you may approximate 1kg = 10N)
Edited by JBX, 15 May 2018 - 05:10 pm.
Carpe Citizen
Posted 15 May 2018 - 05:35 pm
Early spring 314mm. Later spring 350mm. A noticeable difference even allowing for deformation
900 with better bits. Owes me nothing, Makes me smile
has been here 4ever
Posted 16 May 2018 - 07:33 am
2003 oem spring are progressive - two rates : 6.85 N/mm and 9.32 N/mm.
Easy to check : place vertically, get height, then put a weight on top to get a 10mm less height.
This gives the rate x 10.
For the oem spring, weight should be 6.85kg.
Or get a known weight (10 kg), get the height difference then compute the rate.
(1kgf = 9.806N - you may approximate 1kg = 10N)
Well, did this, not easy, though....
Measured a spring rate of ~6.5 N/mm, indicating they were the originals.
Assembled and ready for testing 
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