Mayf,
If you seperate the cars that went 3 miles from the
ones that went 5 miles, is the speed in the 2-2.25
section the same % of the max for both groups??
--- wspotter <wester6935@home.com> wrote:
> mayf,
>
> Remember too that cars that don't go over 175 in the
> 1/4 mile trap at the
> start of the three timed miles are not supposed to
> go the full three miles
> of timed traps. The thinking being that they are
> usually peaked at that
> speed and won't improve their times over the next
> two miles. The exception
> is streamliners. Helps to clear the course for
> faster cars waiting at the
> start.
>
> Might want to go back and study only the vehicles
> that take all three miles
> of timed traps for additional data. Cars like Nolan
> White #131 Autopower
> Special for instance. From the times you'll see
> they are really going and
> then blow one of the two engines and continue to
> pick up speed but not at
> the same velocity as over the 1/4 and first mile.
> Messes up averages big
> time.
>
> Wes
>
> on 10/6/01 4:17 PM, Gary & Ellen at
> garyellen@uswest.net wrote:
>
> > Mayf
> > We run the short course cars and the long course
> cars on the same course, so
> > some cars will complete thier run at the 3 mile
> and exit the course before
> > the 4 mile. We also run 150 CLUB cars on the same
> course, they complete
> > thier run at the 2 1/4 light then exit the course,
> most before the 3 mile.
> > Happy calculating.
> > Gary & Ellen Wilkinson
> > Utah Salt Flats Racing Association
> > ----- Original Message -----
> > From: "DrMayf" <drmayf@teknett.com>
> > To: <land-speed@autox.team.net>
> > Sent: Friday, October 05, 2001 11:23 PM
> > Subject: WOS Time Slip Data Massage...
> >
> >
> >> Well, I finally got the data sorted to my liking,
> although I haven't
> > really
> >> plotted it. In fiddling with the time slip data I
> made a few internal
> > ground
> >> rules. That is a vehicle needed to make it at
> least to the 3 mile flags so
> >> that car would have had to get 2 speeds: one at
> the 2 1/4 trap and through
> >> the full first measured mile. If a vehicle
> reached top speed and slowed
> >> through the next mile, I used only the top speed
> and mile marker where
> > that
> >> occurred. I normalized each vehicle to it's top
> speed. So here is some
> >> preliminary info and maybe the final look also.
> Not as interesting as I
> >> thought it would be.
> >>
> >>
> >> Mile % of Max Speed # of Vehicles
> >> 2.2500 0.9464 82
> >> 3.0000 0.9651 82
> >> 4.0000 0.9802 43
> >> 5.0000 1.0000 29
> >>
> >> That is of the 82 vehicles that surrived the
> ground rules I set up, the
> >> average spercentage of their individual maximum
> speeds was 94.64 percent.
> >> That is 100% of the 82 vehicles was able to reach
> an average of 94.64 % of
> >> their top speeds. That same 82 vehicles made it
> to the 3 mile flag
> >> (naturally, my ground rule!) and they were able
> to gain speed up to 96.51%
> >> of their top speeds by that point. Now it is
> interesting that nearly one
> >> half, 39, bailed out between the 3 and 4 mile
> marker. I do not know
> > whether
> >> or not this was automotive darwinism in action or
> they were somehow
> >> licensing runs. But those remaining 43 vehicles
> gained another few
> >> percentage points: 98.02% of their top speeds.
> Again there was a drop in
> > the
> >> number of vehicles running for the 5 mile flag.
> In this final category,
> >> these vehicles finally reached their top speeds.
> >>
> >> What does it all mean? I don't have the foggiest
> notion. A mental exercise
> >> for me...interesting? I am not sure any longer.
> Pareto's law was ambushed
> >> because my hypothesis was that 100% of the cars
> would reach 80% of their
> > top
> >> speed in 20% of the distance. Well, 20% of the
> distance is mile 1 and
> > there
> >> is no time trap there...so was doomed from the
> git go.
> >>
> >> mayf, the confused, really ignorant, no dumb,
> desert rat in Pahrump.
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