Acceleration / GTech

[CSH-HQ]

It still will be off in MPH.
It does an instant calculation at 1320,
not a 132 measeured average.
Grumpy


>Are you certain what the actual axis of the sensor is?
>If your times are reading slow, then maybe that's what
>is already happenning?
>
>Put some tape on the case, and draw what should be the
>axis on the tape. Use a protractor to keep track of
>the measured angle, and then try to calibrate versus
>the actual angle.
>You will need to do this in two planes, horizontal and
>vertical, to find the real axis.
>
>--- Barry Tisdale <btisdale at cybersol.com> wrote:
>> What's been your (anybody's) experience w/ GTech as
>> far as accuracy
>> compared to timed 1/4 mi runs?  Mine turned out to
>> be reading high (fast)
>> by 0.6 in the 1/4.  First time I ran @ the track, I
>> was a bit disappointed;
>> 13.8sec vs 13.2sec...(:{E
>> 
>> My thoughts on correction - no response to email
>> from the folks @ GTech, BTW.
>> 
>> Would it work to compensate for 'fast' times by
>> offsetting the centerline
>> of the GTech from the centerline of the car (offset
>> it on the yaw axis
>> only)?  These things read acceleration in one plane
>> only, so it would seen
>> that offsetting from the midline would decrease the
>> acceleration the GTech
>> sees.  The Gtech reads fast by 96% of actual time;
>> SIN of 75° is 0.96 -
>> would offsetting the midlines by 15° correct for the
>> error?  Here
>> (Michigan) the tracks are closed, so can't check it
>> till next year.
>> 
>> What do you think?
>> 
>> Thanks - Barry - Sy#26
>> 
>
>
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