Reply to thread

Message: [QUOTE="James Dean, post: 24445, member: 18501"] Writing that equation so more people understand: K= (G x d x d x d x d) / (8 x n x D x D x D) The / means divide. This equation can be found in the Machinery Handbook along with examples. I find mostly theoretical equations in engineering books and many useful things like this in that fat little handbook. The dynamic (resonance) frequencies in these springs are very high because they are relatively stiff and will be damped out by larger masses. If you are referring to the spring/bike mass natural frequency then it will be lower. Proportional to (K/M)**.5 . (The square root of K/M where M is mass.) Shock waves can travel down the spring if a sharp enough impact occurs. The frequencies will differ based on mass and stiffness. Whether it is noticeable is uncertain. Springs can taper for a number of reasons. The springs on the WP compression valve check can be flattened to a pancake and spring back. Shock springs may be tapered for convenience of a larger shock body using an existing clevice design. (not sure) The KTM PDS springs are dual rate so part of the coils bottom on each other which reduces active coils (n) in the equation to make the higher stiffness (K). James [/QUOTE]