Jon
SCTA & BNI comply to the FIA standards at both Speed Week And the World Finals.
The Certifications are on file at SCTA. The Timers are also certified each year
although the requirement is every two years. We will not have less then the
most accurate timing equipment at Bonneville or the Dry Lakes.
Hope this answers your questions.
Glen Barrett
Chief Timer SCTA/BNI
Jon Hobden wrote:
> Glen,
>
> Thanks for confirming my suspicion that the "temperature of tapes" point
> was a red herring, now just for my personal interest, do you happen to have
> to hand the calibration accuracy for the course distance? I know the FIA
> ask for 1 in 10000 or better, what do your surveyors manage?
>
> Jon Hobden
>
> -----Original Message-----
> From: Glen Barrett [SMTP:speedtimer@earthlink.net]
> Sent: 02 March 2000 06:48
> To: Jon Hobden
> Cc: LSR list (E-mail)
> Subject: Re: SETTING THE RECORD STRAIGHT
>
> The Bonneville courses are surveyed not measured with a tape. Each course
> has a
> certificate as well as the timing equipment being certified at a test lab
> that
> has equipment tracable to the standards labs.
> Glen Barrett
> Chief Timer SCTA/BNI
>
> Jon Hobden wrote:
>
> > List
> >
> > At the risk of stirring another hornet's nest, as an electronics engineer
> > involved in radar design I am used to measuring time routinely to
> > resolutions of 0.00000001 second (though it's of no use unless that
> > measurement also has ACCURACY traceable to National Standards).
> >
> > But I have been intrigued for some time, following some discussions in
> Fast
> > Facts on the numbers of significant figures quoted on speeds, as to the
> > accuracy of the surveyed mile and kilometre courses. Can anybody
> involved
> > shed any light on this? Somebody mentioned checking temperatures of
> > "tapes" - does this mean that someone goes out on the salt and tries to
> > pull a mile of measuring tape straight? And how orthogonal are the
> traps
> > to the axis of the measured mile?
> >
> > And I'm not looking for an argument (was that a ten minute one or the
> full
> > half hour?) but I think we're all old enough to remember the discredit
> done
> > by the Bud Rocket "record" fiasco.....
> >
> > Jon Hobden in Horley
> > (Donald Campbell's birthplace)
|