B13 spring stock sizes

[Mark Schoenholz]

Amazing.  I've been absent from this list for years.  I come back and it's
like I never left...Wayne is still broadcasting information like forgotten
lawn sprinkler.  I love it!

Mark Schoenholz

> [mailto:se-r-bounces at se-r-list.org] On Behalf Of 
> wc701lists at bellsouth.net
> Sent: Saturday, May 23, 2009 10:19 AM
> To: Charlie Guthrie
> Cc: se-r at se-r-list.org
> Subject: Re: B13 spring stock sizes
> 
> Charlie Guthrie wrote:
> > We are trying to re-engineer the B13 suspension for Rally-Cross. At 
> > .... We need:
> > 1.  The number of active coils (total number of turns that 
> excludes the 
> > flattened coil at the top) (fractions of a turn count, 
> too)(Heck, if you 
> > just count the total number of turns we'll make the 
> necessary assumptions).
> > 2.  The uncompressed spring height.
> > 3.  The spring wire diameter (preferably measured with a caliper)
> > 4.  The outside diameter of the spring.
> 
> Do you have an FSM, cause it's all in there in the specs section.  Oh 
> shhot, I'll just grab mine.  Note, there are lots of subtly different 
> springs for SR/GA, Sentra/NX, 5spd/AT, 2/4dr, etc.  For a 
> 1992 5spd SE-R:
> 
> 		Front			Rear
> Wire dia	0.484"			0.457
> Coil dia	5.12"			5.12
> Height		14.17"			12.54
> Spring const.	123			112	(in/lbs)
> ID color	"orangex2,light bluex1"		"light bluex2,whitex1"
> 
> > Since someone will undoubtedly want to know: the HyperCoils 
> are 5.65" 
> > outside diameter, 0.520 wire diameter, and have 6 coils 
> total with 4 
> > active coils using two different helix angles. The lower 
> two coils  give 
> > a reasonable ride over slight pavement imperfections. After 
> that the 
> > lower coils go solid and the two upper coils come into play 
> and they are 
> > stiff...wheeeee. That makes for a great drive to the track 
> set-up, but 
> > on dirt we need lots of weight transfer and gradual loading.
> 
> Sounds like you already have it, but I have a detailed doc on the 
> Hypercos I'll send ya separately.
> 
> -Wayne Cox
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