B13 spring stock sizes
Mark Schoenholz
markschoen at comcast.net
Sat May 23 21:04:21 CDT 2009
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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