The Passport G-Timer. You want to know just how fast your ‘85 Geo goes, don’t ya? How quick it can burn up the quarter mile, 0–60, the naked soul sapping G-forces? So stop mooching, and slap down $99.95 for one of these puppies. Just don’t expect to be surprised by the results, eh? Oh, it’s for bikes too.
The G-Timer is a self-contained, fully automated accelleration/decelleration computer. It will show your 1/4-mile times, accelleration time, braking distance, and G-forces. It will also estimate your effective horsepower (both peak and average)….The G-Timer’s accuracy can also be affected by accelleration lift; if the front wheel comes off the ground you’ll probably have inaccurate accelleration data.