Join Date: Mar 2008
Location: Kapuskasing Ontario Canada
Mentioned: 8 Post(s)
0.62 kg/mm did seem strangely low, and I really thought their claimed rate was more than that... A calculated rate gives you a good approximation, but the spring's actual measured rate also depends on its particular material and specific properties. My individual fork springs do take 28 kg to compress them for the initial 40 mm, confirming an initial rate of 0.7 kg/mm. They may need more than 56 kg to compress down by 80 mm, so the average rate over its usable range might be a bit higher... You did install the Sonic 0.85 kg/mm springs with 8 mm less initial preload.
Hyperpro fork springs for the Versys have a free length of 295 mm, with a rate of 0.765 kg/mm to 1.229 kg/mm (higher rates than Progressive Suspension 11-1521 springs). They come with the recommended 15W oil and settings for pre-load and rebound damping.
Last edited by invader; 03-12-2010 at 12:07 PM.