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EASY- Mount on windshield, plug in and go * User-friendly, no manual needed * Convenient remote control power cord * Ultra-bright Vacuum-Fluorescent Text/Graphic display.
ACCURATE- Tracks acceleration times and speeds, including 0-60 and quarter mile times * Calculates peak horsepower * Displays acceleration, cornering, and Braking G-forces, including friction circle.
AUTOMATIC- Stores ten runs in memory * Shows "best runs to date" * Download data to PC, laptop, or PDA
Until now, to accurately measure performance you've needed equipment that costs thousands of dollars. Now there's an easy, accurate and affordable way to measure true performance...the new Passport G-Timers.
No Installation Required * The Passport G-Timers require no installationm and just attach to your windshield, plug into the lighter socket and go. It's that simple.
One Button Operation * Intuitive one button operation makes the G-Timers incredibly easy to use. Just press the "calibrate" button once to automatically calibrate and you're ready to perform.
Amazing Accuracy * The G-Timers measure acceleration times, braking, G-forces and horsepower with absolute precision.
Measures True Performance - Guaranteed! * You'll love the new G-Timers, we guarantee it! If you're not satisfied for any reason, return within 30 days for a refund (applies to factory direct orders only).
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G-TIMER FREQUENTLY ASKED QUESTIONS
What exactly do the G-Timers do? The G-Timer has two basic modes. In the "Timed Run" mode, the G-Timers measure your vehicle's acceleration and braking forces during a brief timed run, and calculate acceleration times (including 0 to 60 mph times, quarter mile times and speeds, and 60 to 0 braking time and distance). After you make a one-time setup with your car's weight, the unit can also calculate horsepower. In the "G-Meter" mode, the G-Timers continuously measure and display the acceleration, braking, and cornering forces your car is producing.
Why would I want one? The G-Timers provide an easy, fun, accurate way to measure your car's performance. If you tune or modify your car, the G-Timers let you measure how much your vehicle's performance and horsepower have changed. For drag race, autocross, track event or road race enthusiasts, the G-Timers can measure your vehicle's performance as you change components, set-up, or driving styles.
Are G-Timers hard to operate? The G-timer is designed-in the same intuitive "one-button operation" and industry-leading performance that their Escort radar detectors are known for. For a timed run, just press the "Start" button, then accelerate whenever you are ready. At the end of your run, the results are shown automatically. For the G-Meter mode, just press the "G-Meter" button.
How do G-Timers work? How hard are they to install? They work by sensing the acceleration forces, using miniature internal solid-state sensors. There is no connection with your car's speedometer or tachometer. No installation is required. The G-Timers simply plug into your vehicle's lighter socket, and mount to the windshield with the included suction cup mount.
What is the accuracy of the G-Timers? For most vehicles, the readings will be within 100 milliseconds "out of the box," and within 50 milliseconds after fine-tuning setup items for the specific car.
Can the G-Timers be used on motorcycles? The cornering G-force reading will not be accurate due to the way motorcycles lean into turns. The acceleration, braking, and timed run modes may work, providing the motorcycle does not lift its front wheel during acceleration.
How many axis accelerometer does the G-Timer use? After extensive testing it was found that the 2-axis accelerometer worked best and have found that to be as accurate as a 3-axis system in every respect.
How does the G-Timer know the speed and distance? The G-Timer tracks acceleration forces over time, and from this continuously calculates speed and distance. For accuracy, it tracks all these items approximately 200 times per second.
Here's a simplified explanation of how the internal system makes it's calculations...
For this simplified example, we'll assume a G-Timer that performs calculations only once per second. We'll also assume that our car can accelerate with a force of 0.45G.
An acceleration of 1 G means that car would accelerate at 32.2 feet per second per second, which is about 22 mph per second. (That means, from a standing start, after one second, the car would be going 22 mph. After two seconds it would be going 44 mph, etc.)
In our example the car accelerates at 0.45G, which is about 10 mph per second.
So, let's look at the 1st second of our timed run: We were going 0 mph at the beginning of that second, and we were going 10 mph at the end of that second. So our average speed during that second was 5 mph. We can then calculate how far the car went: 5 miles per hour = 26,400 feet per hour = about 7 feet per second.
So after the 1st second, we've traveled 7 feet, and we're going 10 mph.
Now let's look at the 2nd second of our timed run (remember, we're still accelerating at 10 mph per second): We were going 10 mph at the beginning of that second, and we were going 20 mph at the end of that second. So our average speed during that second was 15 mph. We can then calculate how far the car went, which turns out to be about 22 feet.
So after 2 seconds, we've traveled 7 + 22 = 29 feet, and we're going 20 mph.
Now let's look at the 3rd second of our timed run: We were going 20 mph at the beginning of that second, and we were going 30 mph at the end of that second. So our average speed during that second was 25 mph. We can then calculate how far the car went, which turns out to be about 37 feet.
So after 3 seconds, we've traveled 7+22+37 = 66 feet, and we're going 30 mph.
This is a simplified way to see how the G-Timer tracks speed and distance during a timed run. Remember, in actuality, the G-Timer continuously measures G-forces, and makes these calculations hundreds of times each second.
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