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FJR Motorcycle Forums
Technical & Mechanical Problems
Let's talk spring rate -FJR rear spring
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<blockquote data-quote="wfooshee" data-source="post: 374219" data-attributes="member: 6354"><p>Yeah, newtons/mm to lbs/in is two conversions. Convert Newtons to pounds, then convert millimeters to inches.</p><p></p><p>1 newton = .225 (more or less) pounds, so 170 N/mm is 38.25 pounds per millimeter. An inch has 25.4 millimeters, so multilply 38.25 by 25.4, and get 971.55 pounds per inch for the spring. Damn stiff spring!</p><p></p><p>To make a single conversion factor, multiply the .225 by the 25.4 and get the 5.715. Technically, that's 5.715 pound-millimeters per Newton-inch, which makes the units work out.</p><p></p><p>Isn't science fun? :glare: </p><p></p><p>By the way, my 5.715 is different from Fencer's 5.710143 because I rounded off the Newtons to pounds factor to .225. My math is easier. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick out tongue :p" loading="lazy" data-shortname=":p" /></p></blockquote><p></p>
[QUOTE="wfooshee, post: 374219, member: 6354"] Yeah, newtons/mm to lbs/in is two conversions. Convert Newtons to pounds, then convert millimeters to inches. 1 newton = .225 (more or less) pounds, so 170 N/mm is 38.25 pounds per millimeter. An inch has 25.4 millimeters, so multilply 38.25 by 25.4, and get 971.55 pounds per inch for the spring. Damn stiff spring! To make a single conversion factor, multiply the .225 by the 25.4 and get the 5.715. Technically, that's 5.715 pound-millimeters per Newton-inch, which makes the units work out. Isn't science fun? :glare: By the way, my 5.715 is different from Fencer's 5.710143 because I rounded off the Newtons to pounds factor to .225. My math is easier. :P [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Let's talk spring rate -FJR rear spring
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