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  #1  
Old 05-30-2012, 07:23 AM
T-Rex T-Rex is offline
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Default Motion Ratio Numbers for 300zx

Has anyone done the geometry on the z32 300zx front and rear suspension to get the motion ratio percentage?

The rear should be the same as the s13.

I planned on figuring it out this weekend, but thought someone here may have already done the math.

If not, I'll figure it out. Thanks in advance.
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  #2  
Old 05-30-2012, 08:38 AM
PerilousActs PerilousActs is offline
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I haven't seen the numbers before. If you do calculate it, please post it up.
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Old 06-05-2012, 06:41 PM
hai1206vn hai1206vn is offline
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Probably about 0.9. The front shocks mount right onto the uprights. Also with stock spring rates being something like 168F/134R with 53% front weight bias, the front motion ratio shouldn't be far from the rear.
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Old 06-05-2012, 07:29 PM
Matt93SE Matt93SE is offline
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Hand grenade math doesn't work when you're trying to do things right...
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Old 06-06-2012, 04:38 PM
Tower240sx Tower240sx is offline
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then for that matter there is no right answer because if the shock mounts to the upright camber changes motion ratio...
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Old 06-11-2012, 06:28 AM
T-Rex T-Rex is offline
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Actually hai1606vn is correct. I dont have the numbers right in front of me but the 0.9 is about right for the front. The rear was around 0.87 or so.
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T-Rex Racing
SCCA ITR 300zx #56
Former SCCA ITA 240sx #56
IMSA RS 1978 Datsun 200sx #58

Last edited by T-Rex; 06-12-2012 at 07:35 AM..
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  #7  
Old 08-10-2012, 08:28 AM
Empire Empire is offline
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awesome.

so glad I found this.
I'm starting the process of measuring out and "paper building" the suspension in my car. There's gotta be a ton of room for improvement. My Z holds the ground better than most of my 240s, but that's pretty much just the extra weight.
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