Motion ratios for FB/FC/FD?
Looking to compile a fairly complete listing of motion ratio's for popular performance cars.
I know someone here must have this info-- Thanks, Steve |
Bueller?
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The FD ratios are about 1.6 front and 1.4 rear, IIRC.
-Max |
what is a motion ratio?
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http://www.google.com/search?hl=en&l...on&btnG=Search
Basically, the motion ratio is the lever effect the suspension has on the shock/spring. For instance, if you have a suspension arm that is 24" long and the shock/spring connects 16" from the chassis side, the motion ratio is 24/16 = 1.5. When the suspension moves, the wheel moves 1.5 times as far as the lower spring/shock attachment point moves. If you had a 500 lbs/in spring, the wheel rate would be 500 / 1.5 = 333 lbs/in. -Max |
By definition the Motion Ratio for a MacPherson Strut (ie fb, fc front suspension) is allways 1.
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Originally Posted by maxcooper
http://www.google.com/search?hl=en&l...on&btnG=Search
Basically, the motion ratio is the lever effect the suspension has on the shock/spring. For instance, if you have a suspension arm that is 24" long and the shock/spring connects 16" from the chassis side, the motion ratio is 24/16 = 1.5. When the suspension moves, the wheel moves 1.5 times as far as the lower spring/shock attachment point moves. If you had a 500 lbs/in spring, the wheel rate would be 500 / 1.5 = 333 lbs/in. -Max |
D'oh!
-Max :D |
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