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SVTPerformance's Chain of Restaurants
Time Slip Bar
Where'd my MPH go?
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<blockquote data-quote="STAMPEDE3" data-source="post: 3533091" data-attributes="member: 9007"><p>From what I see the car is pretty consistant through the 1/8th mile and ET wise in the 1/4.</p><p></p><p>The only difference is trap speed correct?</p><p></p><p>I'm sticking with the timing thing because I've seen it before.</p><p></p><p>Trap speed is measured over the last 60 or 66' of the track (I can't remember which)</p><p>If the first timing light is too high it will hit your air dam/bumper and start timing.</p><p>Last light is correct and hits the tire, that's what 1-1.5 feet difference.</p><p>At 120MPH your moving about 20ft or more per .1sec. so you cover the last 60' in .3</p><p>That 1.5 ft difference in bumper to wheel when the computer calculates makes a big difference.</p><p></p><p>I normally trap @104, one night it was right lane 103-104, left lane 96-99. (A lot of cars like ours were off)</p><p>Brought it to their attention the went adjust the light and then it was 103-104 both lanes.</p></blockquote><p></p>
[QUOTE="STAMPEDE3, post: 3533091, member: 9007"] From what I see the car is pretty consistant through the 1/8th mile and ET wise in the 1/4. The only difference is trap speed correct? I'm sticking with the timing thing because I've seen it before. Trap speed is measured over the last 60 or 66' of the track (I can't remember which) If the first timing light is too high it will hit your air dam/bumper and start timing. Last light is correct and hits the tire, that's what 1-1.5 feet difference. At 120MPH your moving about 20ft or more per .1sec. so you cover the last 60' in .3 That 1.5 ft difference in bumper to wheel when the computer calculates makes a big difference. I normally trap @104, one night it was right lane 103-104, left lane 96-99. (A lot of cars like ours were off) Brought it to their attention the went adjust the light and then it was 103-104 both lanes. [/QUOTE]
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SVTPerformance's Chain of Restaurants
Time Slip Bar
Where'd my MPH go?
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