Microlab PRO-1 User Manual download pdf (Page 26)

GPX Pro Manual21

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1.3 Drag Racing Mode

Drag Racing mode allows you to perform a “drag session” and record data for that session. A

number of different types of drag modes are supported – ¼ mile, 1/8 mile, 1 mile; 0-30, 0-60, 0-

100 mph; 0-30-0, 0-60-0, 0-100-0 mph; and a roll-on mode which times and measures from a

programmable start speed to a programmable stop speed (for example, 60-100 mph).

1.3.1 Basic Operation

In Drag Racing mode, you can select from the following types of drag race via the menu item Type

of drag race:

1/8 mile; ¼ mile; 1 mile

0-30 mph; 0-60 mph; 0-100 mph

0-30-0 mph; 0-60-0 mph; 0-100-0 mph

“Roll-on” (e.g., 60-100 mph)

In addition, for each race type (except roll-on), you can select how you will start the session via

the menu item Drag race starting method: “Standing Start" (timing starts whenever the vehicle

starts moving), or “Tree lights” (you start after a brief cycling of red to yellow to green) and the

reaction time is recorded. There is no “track” for drag racing. You can do it anywhere.

To start a drag race (after you have selected the type

of race and starting method), press Select from the

main menu.

For a few seconds, the GPX will “zero out” the internal accelerometers. Then either you can start

when you’re ready ("Standing start"), or start when the tree lights go green.

NOTE: The internal accelerometers are extremely sensitive.

Especially for drag racing, you must mount the GPX in such a

way as to minimize vibration.

During the 0-30-0, 0-60-0, and 0-100-0 races, the display of the GPX will invert (i.e., reverse black

and white) when you hit the top speed (30, 60, or 100 appropriately). This is the indication that

you have hit the maximum speed and need to start the deceleration (braking) portion of the drag.

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Microlab PRO-1 User Manual Page 26