Calculating DA?
Thread Starter
Team Owner
Joined: Dec 2000
Posts: 58,783
Likes: 1
From: D*ck ina Box
CI III & IV Vote Ho
CI II, III, IV & V Vet
CI IV Bracket Champ
St. Jude Donor '03-'04
Calculating DA?
What readings do you need? Is there and equation?
I've seen people doing this at the track, what do you need?
TIA :cheers:
I've seen people doing this at the track, what do you need?
TIA :cheers:
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Calculating DA? (Mean Green)
I use a weather station. It reads out DA, directly. No formula needed. I'm sure there is a standard formula. I don't know it. Based on the wide discrepencies I've seen among different weather stations, I believe different manufacturers use different formulas. Absolute accuracy isn't as important as a consistant source of data. You need temp, barameter, and humidity (vapor pressure), readings to calculate DA. Good luck, and...
RACE ON!!!
RACE ON!!!
Race Director
Joined: Jan 2003
Posts: 15,176
Likes: 88
From: State of Confusion
Re: Calculating DA? (CFI-EFI)
CFI-EFI:
I agree; it seems no 2 weather-station-makes will compute the 'same' DA at any given time.
I used to chart the weather conditions on a few DIFFERENT stations, belonging to friends.
'MY' info might read 2600; friend #1 might read 1900, and a third might be 2200, so I'd chart 3 different weather-readings/ET-predictions, using each system's computer to predict ET;
as long as all 3 predictions were with-in .02, I felt comfortable. We theorized sharing ALL info was a good idea.
I also agree with you; as long as you use the SAME information & weather station, your records will be accurate. The calculated-info is just a 'number'; the computer/weather station correlates that 'number' to a range of ET-predictions.
I agree; it seems no 2 weather-station-makes will compute the 'same' DA at any given time.
I used to chart the weather conditions on a few DIFFERENT stations, belonging to friends.
'MY' info might read 2600; friend #1 might read 1900, and a third might be 2200, so I'd chart 3 different weather-readings/ET-predictions, using each system's computer to predict ET;
as long as all 3 predictions were with-in .02, I felt comfortable. We theorized sharing ALL info was a good idea.
I also agree with you; as long as you use the SAME information & weather station, your records will be accurate. The calculated-info is just a 'number'; the computer/weather station correlates that 'number' to a range of ET-predictions.
Thread Starter
Team Owner
Joined: Dec 2000
Posts: 58,783
Likes: 1
From: D*ck ina Box
CI III & IV Vote Ho
CI II, III, IV & V Vet
CI IV Bracket Champ
St. Jude Donor '03-'04
Re: Calculating DA? (Mean Green)
How much and where can you get a "weather station" :cheers:
Race Director
Joined: Jan 2003
Posts: 15,176
Likes: 88
From: State of Confusion
Re: Calculating DA? (Mean Green)
How much and where can you get a "weather station" :cheers:
Look in National Dragster, or check with Biondo Racing Products; I think they carry weather/data systems.
Race Director
Joined: Oct 2001
Posts: 19,653
Likes: 428
From: Melbourne Florida
Cruise-In IV Veteran
Re: Calculating DA? (Mean Green)
I am sorrry to inform you the committee has considered your acquisition of a weather station but must inform you that you will not be allowed to use said equipment at next year's Challenge...
Due to your high finish in the points standings it would be an unfair advantage...only those participants finishing fifth or higher shall be allowed to use such equipment..
Thank you..... The Committee
Due to your high finish in the points standings it would be an unfair advantage...only those participants finishing fifth or higher shall be allowed to use such equipment..
Thank you..... The Committee
Elite Torch Red Member
Joined: Sep 1999
Posts: 57,805
Likes: 23
From: Exit 89 GSP,Lakewood,NJ The Land Of Mojo
Cental/South NJ Events Coordinator
CI 1-2-3-4-5-6-7-8-9-10-11-12 Vet
CI-II Burnout & Drag Champ
St. Jude Donor '03-'04-'05-'06-'07
Re: Calculating DA? (Mean Green)
Mark, Tag seems to be the most popular and you can get it at www.summitracing.com just type in weather station as the keyword.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Re: Calculating DA? (Mr Mojo)
I bought my Altronics, PA2 ( http://www.altronicsinc.com) from Biondo Racing (http://www.bioboracing.com). At that time, now too I think, Biondo offered better pricing. $400.00 seems to be the minimum for a full featured unit. Biondo sells the TAG unit, also. Good luck, and...
RACE ON!!!
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Team Owner
Joined: Feb 2000
Posts: 32,545
Likes: 2
From: Lithia FL
Cruise-In II & IV Veteran
CI VI Drag Champ!
Re: Calculating DA? (Mean Green)
Mark, TAG has a couple on ebay right now http://cgi.ebay.com/ws/eBayISAPI.dll...category=48624
You can sign up for the forum on http://www.tagsystems.com and they will notify you when they have others for sale.
There are also two others being sold by individuals and they are prior model.
You can also go to http://www.biondoracing.com/WeatherStations.shtml and they sell a few others.
Lastly, try a post on the our own for sale sections. I picked on up a couple years ago from someone who had not even thought about selling it till I offered to buy.
You can sign up for the forum on http://www.tagsystems.com and they will notify you when they have others for sale.
There are also two others being sold by individuals and they are prior model.
You can also go to http://www.biondoracing.com/WeatherStations.shtml and they sell a few others.
Lastly, try a post on the our own for sale sections. I picked on up a couple years ago from someone who had not even thought about selling it till I offered to buy.
Thread Starter
Team Owner
Joined: Dec 2000
Posts: 58,783
Likes: 1
From: D*ck ina Box
CI III & IV Vote Ho
CI II, III, IV & V Vet
CI IV Bracket Champ
St. Jude Donor '03-'04
Re: Calculating DA? (Fuzzy Dice)
I am sorrry to inform you the committee has considered your acquisition of a weather station but must inform you that you will not be allowed to use said equipment at next year's Challenge...
Due to your high finish in the points standings it would be an unfair advantage...only those participants finishing fifth or higher shall be allowed to use such equipment..
Thank you..... The Committee
Due to your high finish in the points standings it would be an unfair advantage...only those participants finishing fifth or higher shall be allowed to use such equipment..
Thank you..... The Committee