[F500] Nat Course Layout

Jan Schmidt jschmidt at kumc.edu
Wed Jan 5 11:30:00 MST 2005 

There was talk a month or so ago that SCCA was considering re-surfacing
the entire solo surface, or building an entire new area seperate from
the current Forbes field. I dont know if that has been resolved as of
yet.
Bill Schmidt 88 Red Devil Kawi

>>> cvoboril at msn.com 01/04/05 8:58 PM >>>
An alternative to better and better rod ends is a
group of f500 drivers to lean heavily on whomever
is doing Nationals course setup.



According to the 2004 Sll Rules, page 45
Course Safety and Layout Rules 2.1.B
...."Dips that could get a car airborne shall not be included."

This is a rule, not a recommendation, it uses the word "shall".

Then again, what is a "dip"  and are we really cars? :->

Did anyone get airborne in 2004?
Anything else that might be considered
a "car" besides a F500 get airborne?



With the amount of patching every year,
the North course had been getting better, I thought.
Airborne cars have to be a result of a layout mistake.

I know that we have run both  N and S course year after year and
only once every 2 or 3 years do we get a course that does bad things to
our
cars,
so I don't believe this breakage is necessary.


Chuck
  ----- Original Message -----
  From: Jan Schmidt<mailto:jschmidt at kumc.edu>
  To: f500 at f500.org<mailto:f500 at f500.org> ;
jnovak6 at wideopenwest.com<mailto:jnovak6 at wideopenwest.com>
  Sent: Tuesday, January 04, 2005 6:45 PM
  Subject: RE: [F500] Rod Ends


  List,
  My 88 Red Devil that broke its front suspension at the 2004 Solo 2
  National, uses 3/8" heims in the pivoting part of the front "shocks."
  So, when you hit a bump in the road, the end of the round housing of
the
  joint takes a real beating. The rounded part of the joint blew out 
when
  I hit the major fault at Forbes Field, going about 30 to 40 mph. My
big
  question is.....Is my car unique in using these wimpy 3/8" joints, or
is
  this industry standard? I assume this is what Jay Novak was talking
  about when he said chrome moly is a must? TIA
  Bill Schmidt 88 Red Devil Kawi

  >>> jnovak6 at wideopenwest.com<mailto:jnovak6 at wideopenwest.com> 01/04/05
5:32
PM >>>
  The 14,500 lb static load rating is an axial load along the axis of
the
  threaded shaft.  The weakest point for this ultimate yield application
  is the tension load that would fail (either deformation or failure) is
  the end of the housing.  However that is NOT the failure mode for
front
  spindle heims, which are typically 1/2" for F500s.  The failure mode
for
  the spindle heims is causeed by bending from an accident or flexural
  bending at the root of a thread.  In this direction the absolute yield
  is about 10% to 15% of the maximum axial load capacity.  Look in an
  Aurora catalog for these data.  Heims that are in bending, (front
  spindle heims that get suspension spring loads, as an example) MUST BE
  CHROME MOLY heims.  I have tried all the major manufacturers of heims
&
  I HIGHLY recommend the use Aurora rod ends.  They are your best
  insurance for the $$$.

  I hope I have not confused anyone with this post.

  Thanks ... Jay Novak



  -----Original Message-----
  From:
f500-bounces+jnovak6=wideopenwest.com at f500.org<mailto:f500-bounces+jnovak6=wi
deopenwest.com at f500.org>
  [mailto:f500-bounces+jnovak6=wideopenwest.com at f500.org] On Behalf Of
  Madurski, Ronald M
  Sent: Tuesday, January 04, 2005 12:28 PM
  To: f500 at f500.org<mailto:f500 at f500.org>
  Subject: RE: [F500] Rod Ends

  Point taken but, the 1/2-20's have a static load rating of 14,500 lbs.
  Although I'm not sure what direction that static load is applied it
  seems plenty strong to me.  I was just hoping that someone knew a shop
  that would sell a box of 10 or 20 for less.

  He doesn't carry chrome-moly in the 3/8-24's but the standards have a
  6,000 lbs rating.

  Thanks,

  Ron Madurski


  > -----Original Message-----
  > From:
f500-bounces+ronald.m.madurski=lmco.com at f500.org<mailto:f500-bounces+ronald.m
.madurski=lmco.com at f500.org>
  > [mailto:f500-bounces+ronald.m.madurski=lmco.com at f500.org]On Behalf
Of
  > Jeremy Swank
  > Sent: Tuesday, January 04, 2005 12:09 PM
  > To: f500 at f500.org<mailto:f500 at f500.org>
  > Subject: RE: [F500] Rod Ends
  >
  >
  > Those prices seem cheap to me.  I pay about double that for
  > the 3/8 stuff
  > and put $50+ on the 1/2 stuff.  However, I am of the school
  > of thought to
  > use the strongest and best rod ends available.  I've seen BAD
  > things happen
  > when they break at speed and hate replacing worn rod ends
  > throughout the
  > season.  I know others have different opinions, but I am of
  > stronger is
  > better.  I will assume the risk of a strong rod end causing
  > some frame
  > damage in a wreck vs a weak one CAUSING a wreck.
  >
  > Jeremy Swank
  >
  > Check out the top notch Novakar J-9 that was LEADING the
  > Runoffs this year
  > in the classifieds!
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