Drag strip again , third time this season
#1
Senior Member
Thread Starter
Drag strip again , third time this season
Density altitude at 4150 ft
Ran best 13.86 at 101mph 2.14 60ft , 1/8 at 81.5mph and 9sec
Can't get better than 13.8
, it's probably my 60 ft time that's
Slowing things down, I launched at 1200 rpm on last run and still
Kinda bogged down, was going to try higher but track closed
Not too bad I guess if I figure in correction for the density altitude
Corrected would be at 13.35 at 105mph
Ran best 13.86 at 101mph 2.14 60ft , 1/8 at 81.5mph and 9sec
Can't get better than 13.8
![Frown](https://mbworld.org/forums/images/smilies/frown.gif)
Slowing things down, I launched at 1200 rpm on last run and still
Kinda bogged down, was going to try higher but track closed
Not too bad I guess if I figure in correction for the density altitude
Corrected would be at 13.35 at 105mph
#2
Super Member
4150 is very high. Where did you get that correction? At that altitude your time adjustment is 5% and 1.05 for MPH so you are running an adjusted which would be 13.11 at 106.5 mph.
http://www.greatlakesdragaway.com/co...onfactors.html
http://www.greatlakesdragaway.com/co...onfactors.html
#3
Senior Member
Thread Starter
4150 is very high. Where did you get that correction? At that altitude your time adjustment is 5% and 1.05 for MPH so you are running an adjusted which would be 13.11 at 106.5 mph.
http://www.greatlakesdragaway.com/co...onfactors.html
http://www.greatlakesdragaway.com/co...onfactors.html
actual elevation at the track is 1440ft, dew point 61, temp 84, pressure 29 so with factors "Density Altitude" comes out to be 4600 ft, http://wahiduddin.net/calc/calc_da.htm this is what most ppl who run there agreed on so this is aprox around 4 to 5 tenths slower compared to at see level
Last edited by amgalex; 08-14-2011 at 10:54 PM.
#4
MBWorld Fanatic!
Density altitude at 4150 ft
Ran best 13.86 at 101mph 2.14 60ft , 1/8 at 81.5mph and 9sec
Can't get better than 13.8
, it's probably my 60 ft time that's
Slowing things down, I launched at 1200 rpm on last run and still
Kinda bogged down, was going to try higher but track closed
Not too bad I guess if I figure in correction for the density altitude
Corrected would be at 13.35 at 105mph
Ran best 13.86 at 101mph 2.14 60ft , 1/8 at 81.5mph and 9sec
Can't get better than 13.8
![Frown](https://mbworld.org/forums/images/smilies/frown.gif)
Slowing things down, I launched at 1200 rpm on last run and still
Kinda bogged down, was going to try higher but track closed
Not too bad I guess if I figure in correction for the density altitude
Corrected would be at 13.35 at 105mph
#5
Senior Member
Thread Starter