Quote:
Originally Posted by SgtRick
Went yesterday to the track to run the quarter mile for the first time. Turned on the PDR and it recorded the run at 11.90. The car ran 11.391 @ 123.4 mph. Are the PDR's only an estimate, or does it need calbration? Thanks.
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The PDR would start the timer as soon as you touch the gas pedal and are off the brake I believe , so any wheel slip would play into your ET on PDR , where as the track time wouldn't start until you crossed the lasers, so wheel slip wouldn't effect your ET on the track.