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RG Racers: Drag racing mosh pit

RG500s burning rubber around the globe..

... and the place for making excuses


I'm a numbers geek, and I can't help myself sometimes.  So here's a little bit of drag racing data that I have gathered so far.  Perhaps we can get more?


Randy Norian - rg500deltamailto:rg500delta@mac.com?subject=Drag racing RG500@mac.com



Some data Marko shared:


first pass ever:            11.97 @ 183.05 km / 113.3 mph


Eventually!!                10.22 @ 215 km/ 133.3 mph

also:                              10.29 @ 218 km/ 135.2 mph


That is interesting, because my notes have my first trip to the strip (best pass) as 11.80s at 115 mph, in other words VERY SIMILAR! - RN   My first ever pass on the RG was well into the 12s, I remember being very disappointed.  Getting into the 11s was a big deal for me.


Marko said his best pass is           10.21 @ 223 km/ 138.2 mph

Alpha and Omega ran                    10.25@ 214 km/ 134 mph

Then we have Juha with               10.59 @ 213.5 km/ 133.4 mph

And the poor Delta in last with   10.905@ 221 kph/137.2  mph (uncorrected)

Not sure what Willy Ponting's best pass was.  


I have no idea what the other corrections are, you have to keep track of the conditions when you test!


Funny how close four completely different bikes can be.  8-)


All I know is, if I wait until the middle of summer to race again, the incredible heat and humidity will make this an uphill battle.  >8-/  

2T performance bites when it's 95 degrees out!


In the time-honored tradition of all good racers from around the globe, I must start making my excuses at this time!   Here comes the correction factor.


I don't know about Finland, but summer here can be excruciatingly hot and humid.  Performance is greatly diminished - fortunately, drag racers use correction factor to standard conditions,  to remove the air quality and altitude from the comparison.   First, you calculate the "density altitide" which is a result of your actual altitude, barometric pressure, temperature, and humidity.   Then you use that density altitude to look up your correction factor.  


So the Delta's 10.905@ 137.2  mph happened under the following conditions:   1200’ altitude,  89 degrees F,   75% RH,  29.90 “ hg pressure


Resulting "density altitude" is 3852 feet,  with relative density of 89.21%


Here's a great site that can perform the weather correction, there's also an APP, by the way!  


http://www.dragtimes.com/da-density-altitude-calculator.php


NHRA "density altitude" correction charts below:

1200 to 2900 ft
1200 to 2900 ft
3000 to 4900 ft
3000 to 4900 ft
5000 to 6000 ft
5000 to 6000 ft

So, what does that do for the ET and mph?   3800 feet "density altitude" has at ET correction of 0.9536 and a mph correction of 1.0493


So the 10.905 @ 137.2 corrects to 10.399 at 143.96

Maybe there's hope for the Delta after all.  Hopefully we'll find out more this summer.