kawasakijockey
Pro
Posts: 1876
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posted September 25, 2011 07:14 PM
Density altitude and ET/mph
Well it seems that a 450ft change in DA changes my bike's et exactly .10 and 2.5 mph. Now I know..
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Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
  
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Bently
Needs a life
2012 14r In Blue and no Mods!
Posts: 5428
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posted September 25, 2011 07:31 PM
Wow that seems like a bunch, i went 8.97 a few weeks ago in 2700 ft, friday night the air was 345 ft! my guess would have been for me about an 8.85 or so. only I cant ride as I had surgery to re attach my bicep to my shoulder. according to your calculations i could have went a high 8.40 to low 8.50 and I'm going to say no way in hell I would have picked up anything close to that.
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almost_les
Zone Head
Posts: 590
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posted September 25, 2011 07:59 PM
sweet! i'd run 8.32 @ 173 at sea level!
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justoyz2
Zone Head
Justoyz Racing
Posts: 858
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posted September 25, 2011 09:18 PM
 Edited By: justoyz2 on 26 Sep 2011 05:18
Here is a tool that I use all the time to determine D/A and estimate calc
[url] http://www.dragtimes.com/horsepower-torque-calculator-conversion.php [url/]
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2012 zx14R-blue,2012 zx14R-black, 2014 zx14Trbo, 2011 zx10R, 2007 zx10 Turbo.....
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kawasakijockey
Pro
Posts: 1876
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posted September 26, 2011 01:53 AM
Edited By: kawasakijockey on 26 Sep 2011 10:16
quote:
Wow that seems like a bunch, i went 8.97 a few weeks ago in 2700 ft, friday night the air was 345 ft! my guess would have been for me about an 8.85 or so. only I cant ride as I had surgery to re attach my bicep to my shoulder. according to your calculations i could have went a high 8.40 to low 8.50 and I'm going to say no way in hell I would have picked up anything close to that.
I was kinda trying to be sarcastic. Yep, it has to be something else involved on my end, maybe temperature. I used the dragtime da calculator against 4 track days and thats what I ended up with.
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Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
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1badzx12r
Needs a life
Posts: 8321
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posted September 26, 2011 04:06 AM
quote:
I was kinda trying to be sarcastic. Yep, it has to be something else involved on my .
learn how to ride
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http://www.youtube.com/watch?v=S06nIz4scvI
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CrotchRocket
Moderator
Bracket Racing with Betsy
Posts: 8038
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posted September 26, 2011 05:13 AM
The car guys use those machines and it works well for them...Its easy to get a car to run its best ET...
Street bikes are a whole different animal, the better your clutch hand gets the faster you go...Not so easy to get a bike to run its best ET !!!
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Jason Miller StreetBike Seminars
*****DragRacers do it better, because they dont cut Corners*****
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kawasakijockey
Pro
Posts: 1876
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posted September 26, 2011 07:30 AM
quote:
quote:
I was kinda trying to be sarcastic. Yep, it has to be something else involved on my .
learn how to ride
Dont you have a clutch to figure out??
____________
Get on the shortbus boys 'cause its time to get schooled.
2007 ZX-14
1.38 60ft
9.03 @ 149mph
8.95 @153 small shot n2o
8.68 @160mph 5lbs boost
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GREYHOUNDMOSES
Expert Class
Posts: 324
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posted September 26, 2011 09:51 AM
According to their calculator my 14 makes 149 HP ....... AT THE CRANK !!!
No wonder I'm slow 
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justoyz2
Zone Head
Justoyz Racing
Posts: 858
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posted September 26, 2011 10:29 AM
I only use it for checking the D/a when I don't have a weather station. Once you know your tune up and make a few passes, check the D/a then retune .... you bike will run a lil better, because you are tuned to track conditions. I know many have heard guys/gals saying my bike is only running x mph, because they are not tuned to the track, they are tuned to the conditions when they made their maps...
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2012 zx14R-blue,2012 zx14R-black, 2014 zx14Trbo, 2011 zx10R, 2007 zx10 Turbo.....
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JZX
Zone Head
Posts: 943
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posted September 26, 2011 11:11 AM
quote:
I only use it for checking the D/a when I don't have a weather station. Once you know your tune up and make a few passes, check the D/a then retune .... you bike will run a lil better, because you are tuned to track conditions. I know many have heard guys/gals saying my bike is only running x mph, because they are not tuned to the track, they are tuned to the conditions when they made their maps...
+1 on that. Like me for example, the pump gas map i am running right now was done and 110 degrees on the dyno with my air fuel coming in at 13.2. Probably not a good map for running at the track in 70 degree weather. Its probably lean and making less power.
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06 ZX14 65"
Best 1/8 mile 5.68@126.4 on a 1.41 60'
Best 1/4 mile 8.87@152.7 on a 1.47 60'
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almost_les
Zone Head
Posts: 590
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posted September 26, 2011 01:04 PM
quote:
According to their calculator my 14 makes 149 HP ....... AT THE CRANK !!!
No wonder I'm slow
*sitar music*
you're using 149 hp. being able to properly apply every hp that the bike can produce is the difference between the pros and joes, man.
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1badzx12r
Needs a life
Posts: 8321
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posted September 26, 2011 01:11 PM
quote:
quote:
quote:
I was kinda trying to be sarcastic. Yep, it has to be something else involved on my .
learn how to ride
Dont you have a clutch to figure out??
Done did that ..now i got to learn how to ride again ..
____________
http://www.youtube.com/watch?v=S06nIz4scvI
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mathews
Expert Class
Posts: 425
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posted September 26, 2011 03:14 PM
All the e,t, calculators rely on your bike being rich.If the air improves it should go faster.If its a little lean it will drive them nuts
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