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don
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Post subject: altitude correction factors  Posted: Wed Jul 31, 2002 9:53 am |
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Joined: Fri Jan 04, 2002 12:36 pm
Posts: 24
Location: Lelystad, Netherlands
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Folks,
Many of you travel all around EU to race. Many tracks are on different altitudes. Below is a table with correction factors that will provide you the time the car would have ran when the track was at sea level (like Drachten). E.g. Bitburg is at 4800ft above sea level.
I hope it is usefull.
NHRA Elevation Correction Factor
To convert your timeslip ET and MPH to sea level. Multiply
applicable factor times your ET or MPH.
(Example: You ran a 13.8 @ 100 MPH at 5000' elevation track.
The correction factors are .9367 and 1.0661 for 5000'. (13.8
* .9367) = 12.93 , (100 * 1.0661) = 106.61 MPH. So the correct
timeslip would be 12.93 @ 106.61 MPH.)
Altitude above Sea Level (Feet) Elapsed Time Factor (ET)
Trap Speed Factor (MPH)
1200 .9874 1.0129
1300 .9861 1.0143
1400 .9848 1.0157
1500 .9835 1.0171
1600 .9822 1.0185
1700 .9809 1.0199
1800 .9796 1.0213
1900 .9783 1.0227
2000 .9770 1.0241
2100 .9757 1.0255
2200 .9744 1.0269
2300 .9731 1.0283
2400 .9718 1.0297
2500 .9705 1.0311
2600 .9692 1.0325
2700 .9679 1.0339
2800 .9666 1.0353
2900 .9653 1.0367
3000 .9640 1.0381
3100 .9627 1.0395
3200 .9614 1.0409
3300 .9601 1.0423
3400 .9588 1.0437
3500 .9575 1.0451
3600 .9562 1.0465
3700 .9549 1.0479
3800 .9536 1.0493
3900 .9523 1.0507
4000 .9510 1.0521
4100 .9497 1.0535
4200 .9484 1.0549
4300 .9471 1.0563
4400 .9458 1.0577
4500 .9445 1.0591
4600 .9432 1.0605
4700 .9419 1.0619
4800 .9406 1.0633
4900 .9393 1.0647
5000 .9380 1.0661
5100 .9367 1.0675
5200 .9354 1.0689
5300 .9341 1.0703
5400 .9328 1.0717
5500 .9315 1.0731
Greetz,
Don
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Hawk
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Post subject: Posted: Wed Jul 31, 2002 4:11 pm |
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Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
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Thanks That is a big diffrence!!!
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Rampage
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Post subject: Hmmm... Posted: Wed Jul 31, 2002 5:27 pm |
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Joined: Tue Oct 02, 2001 12:56 am
Posts: 618
Location: Vilnius/ Munich / Dubai
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Means i could have run a 8.66 @ 94,34 mph. Geez.
R@M
_________________
~ Memories are the only paradise where you can NOT get kicked out ~
Well, I ran out of F-Bodies - till 2010 - if there still is GM
Got boost?
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Hawk
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Post subject: Posted: Wed Jul 31, 2002 5:33 pm |
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Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
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I am trying to get the elevation verified. I went with that # and wow.
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Hawk
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Post subject: Posted: Thu Aug 01, 2002 6:03 am |
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Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
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I think I seen 1230ft on the tower bt it was really hard to read. But that still helped 2/10th in a 1/4.
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Squirrelina
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Post subject: Posted: Wed Aug 07, 2002 9:42 pm |
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Joined: Sat Apr 13, 2002 2:00 am
Posts: 2530
Location: Höheischweiler, SüdWestPfalz
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just say I was right the first time - the 1230 is meters ?
_________________
Silke
"It's easy to make a buck. It's a lot tougher to make a difference" --Tom Brokaw
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Garry
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Post subject: Posted: Wed Aug 07, 2002 9:52 pm |
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Joined: Sat May 26, 2001 9:59 pm
Posts: 7823
Location: Bad Hersfeld, Germany
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I'll try to pack my GPS receiver ... should be pretty acurate ... also, maybe we can get a reading as to how much the track is sloped ...
_________________
Garry Glendown * '99 Firehawk Convertible
"Horsepower is how fast you hit the wall and torque is how far you take the wall with you."
"Speed doesn't kill - suddenly becoming stationary on the other hand ..."
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Hawk
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Post subject: Posted: Wed Aug 07, 2002 9:54 pm |
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Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
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If its meters the Hawk is pretty nasty.
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Hawk
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Post subject: Posted: Mon Sep 23, 2002 4:51 pm |
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Joined: Tue Jun 26, 2001 4:25 pm
Posts: 4288
Location: Vilseck
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This was verified by Gary 1230 ft.
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