FAQs about Kestrel Meters & Auto Racing

[Kestrel]

FAQs about Kestrel Meters & Auto Racing

Why is it important to know the weather conditions, and how can the Kestrel 4000 help me win races?

Weather affects your performance. Period. If you are not using something to measure the weather conditions then you are missing a piece of valuable information that can help you win races. Environmental conditions such as relative humidity, density altitude, dewpoint and wind speed all influence your car. By monitoring these conditions and analyzing how weather patterns from previous races change your car's performance, you are able to make more informed dial-in and tuning decisions. Since the Kestrel 4000 Pocket Weather Tracker is portable and accurate, it enables you to monitor the weather conditions that concern you right at the track, not at the trailer miles away.

I've seen a lot of high dollar weather units on the market, yours is so inexpensive, can it really be accurate?

The engineers at NK have been working on the Kestrel's functionality for over ten years, and have been awarded four patents on their innovative engineering. Additionally, each and every Kestrel is calibrated against NIST-traceable standards, and can be recalibrated in the field or factory.
We're so sure of Kestrel Meter's functionality that we guarantee each Kestrel for two-years, and each one comes with a Certificate of Conformity.

How can I be sure the Kestrel 4000 is giving me the altitude and barometric pressure readings that I'm looking for?

The Kestrel 4000 uses the same barometric pressure sensor used in most common barometers and altimeters. These sensors are influenced by the surrounding environment (the altitude), as well as the weather (barometric pressure). These two readings are inter-dependent, and you need to know one of them in order to measure them correctly.

The easiest thing to do is to determine the altitude of the track where you are racing. Google Earth is free software that pinpoints the altitude of any address. Simply enter this value into the barometric pressure screen as the "reference altitude". Then take the barometric pressure reading that the Kestrel displays and enter that as the "reference pressure" on the altitude screen. Now you're good to go!

Any suggestions where and when is the best time to take readings? Before or after a run, or both?

We don't claim to be racing experts, but here are some tips that will help.
The one thing we can say is that consistency is a must. Pick a system and stick with it. It's often easier to record the weather data immediately after returning from a run. That way it won't matter if you get delayed at the start. Also, you can set the Kestrel to automatically store data every five minutes, and then just coordinate times with the time slip.

Lastly, for the most accurate readings possible, it's best to keep the Kestrel 4000 in the shade, and make sure air is circulating through the temperature sensor (the curly thing), either by holding it in the breeze or by waving it around.

I have E.T. prediction software and I want to make sure I am imputing the correct readings for my dial-in.

- If your software asks for station or raw pressure, simply set the reference altitude to 0.

- If your software asks for density altitude, you can use the value that your Kestrel 4000 automatically measures.

- If your software asks for barometric pressure and altitude, make sure you know your track's altitude ahead of time and enter it in as the "reference altitude."

I don't have E.T. prediction software, any help you can offer how I can dial in with the Kestrel alone?

We went to the experts to get an answer for this one. Here's how they do it at Martino Motorsports: The density altitude reading is the most important to us. For every 150 ft. increase in DA, our car will lose .01 in elapsed time, and for every 150 ft. decrease our car will pick up .01 in elapsed time. But we can get the same DA and have two completely different runs.

This is due to humidity factor. Although the DA might be the same, you can have a different temperature and humidity combination. For every 15% increase in humidity our car's performance will decrease .01 in elapsed time and for every 15% decrease in humidity our car's performance will increase
.01 in performance.

[ranmori]

simulation credit auto
Kestrel,
The article is quite informative ^^
Thanks

[banmark]

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