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Date: Tue, 9 May 2000 18:18:53 -0700 (PDT)
From: Ted Hedman <thedman@amelia.sp.trw.com>
Subject: Re: Spring Rates
>List;
>
>Does anyone know the spring rates for the 2 sets of uncut rear springs I
>have.  The specs are:
>
>Set #1,  10" tall,  4" OD,  6.5 coils of 1/2" wire, "X17-105" stamped on
>one 314-105 on the other.
>Set #2   11" tall,  4" OD,  9 coils of 9/16" wire, "919-210" stamped on
>both.  TIA
>
>Dean Sherman
>'71 2 Dr, KA24 someday?
>Concord, CA
>925-685-3423

FWIW, from "Service Manual, Datsun Model 510 Series, Chassis and Body 1972":

Stock '72 510 sedan rear springs(USA)-
.559" wire diam
10.5 coil turns
Free length R 12.047"
Free length L 11.772"
K=357 lb/in

Hard Suspension (Euro) Springs- 
.571" wire diameter
9.5 coil turns
Free length 11.417"
K=443.1 lb/in

Ted "if you can't answer the question, answer another one" Hedman


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