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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Gen III Non-ES fork upgrade?
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<blockquote data-quote="MCRIDER007" data-source="post: 1271253" data-attributes="member: 329"><p>Fixed the Gen2 rate for you.<img src="https://www.fjrforum.com/forum//public/style_emoticons/default/smile.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /> I know your rates come directly from Yamaha but I'm pretty skeptical about either the rates or the K1/K2 transition points on the dual rate springs. I have owned a 05, 08, and 13 and the fork's performance just don't seem to match the FSM rates. The 05 springs didn't seem to be nearly as firm as the .95kg springs GP Suspension was installing in 2006 and when looking at those springs, they don't even look like dual rate springs, much closer to progressive springs. There certainly is not going to be a single transition point mid stroke if there is any transition point(s) at all its going to start towards the end of the stroke.</p><p></p><p>I haven't looked at the '13 springs yet but they don't feel like there is a transition point, they feel like 1.0kg springs all the time. Ditto for my S10, it most definitely came with dual rate springs but it appears that the transition point happens within the initial sag and they felt like they were (I replaced them with .90kg linear springs) on the stiff (1.2kg) portion of the spring all the time.</p><p></p><p>Bottom line was for me the 05 springs seemed to be very under sprung, the 08 springs were better but still too light, and the 13 springs seem just right.</p></blockquote><p></p>
[QUOTE="MCRIDER007, post: 1271253, member: 329"] Fixed the Gen2 rate for you.[IMG]https://www.fjrforum.com/forum//public/style_emoticons/default/smile.png[/IMG] I know your rates come directly from Yamaha but I'm pretty skeptical about either the rates or the K1/K2 transition points on the dual rate springs. I have owned a 05, 08, and 13 and the fork's performance just don't seem to match the FSM rates. The 05 springs didn't seem to be nearly as firm as the .95kg springs GP Suspension was installing in 2006 and when looking at those springs, they don't even look like dual rate springs, much closer to progressive springs. There certainly is not going to be a single transition point mid stroke if there is any transition point(s) at all its going to start towards the end of the stroke. I haven't looked at the '13 springs yet but they don't feel like there is a transition point, they feel like 1.0kg springs all the time. Ditto for my S10, it most definitely came with dual rate springs but it appears that the transition point happens within the initial sag and they felt like they were (I replaced them with .90kg linear springs) on the stiff (1.2kg) portion of the spring all the time. Bottom line was for me the 05 springs seemed to be very under sprung, the 08 springs were better but still too light, and the 13 springs seem just right. [/QUOTE]
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FJR Motorcycle Forums
FJR Parts & Accessories Discussions
Gen III Non-ES fork upgrade?
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