G-Tech Pro Competition User Manual - 148

148

G-TECH / Pro Competition User Guide, Release 3.1

If you continue to inch your vehicle forward until you have 

almost left the staging area, you have “deep staged” (i.e., you 

are very close to the starting line). Deep stagers will often roll 

forward until the Pre Stage Bulb goes out... making sure not 

to turn off the Stage Bulb as well.

Deep staging will generally give you a shorter reaction time, 

but a slower E.T. and trap speed, because the vehicle has vir-

tually no running start before the E.T. clock starts.

The E.T. clock begins running once the vehicle’s front tires 

have rolled far enough forward so that they are no longer 

blocking the Stage Beam. This means if you sit at the starting 

line for a bit after you should have launched, it won’t affect 

your E.T., since your vehicle will still be blocking the Stage 

Beam. The E.T. clock stops running once the driver passes the 

quarter-mile mark.

The reaction time clock begins timing as soon as the third 

amber light comes on. Even if your vehicle doesn’t move, the 

reaction time clock is running! The reaction time clock stops 

running once the vehicle moves forward enough to unblock 

the Stage Beam (this is exactly when the E.T. clock begins 

timing.)

Rollout is defined as how far your vehicle moves from a stop 

(when it is staged) until the E.T. clock starts. The G-tech 

allows you to set the rollout distance, i.e. how far the vehicle 

moves before the E.T. clock starts.

A large rollout distance (such as 16”) gives the vehicle more 

of a “running start” before the E.T. clock starts. This can result 

in shaving several tenths of a second from the E.T. and adding 

several MPH to the trap speed.

As an example, say you set the rollout distance in the G-tech 

to 12 inches. When you launch your vehicle, the G-tech 

knows when your car has barely begun to move, i.e. a fraction 

of an inch. But it won’t start the E.T. clock until it determines 

your vehicle has traveled 12 inches forward. At the track, this 

would mean your vehicle traveled 12 inches before the front 

tires rolled far enough to unblock the Stage Beam.

In any of the 4 Timing Tree modes, the G-tech will measure 

your reaction time. Also just like a track, it will begin measur-

ing your 1/4 mile time when the vehicle has traveled the full 

rollout distance.

A poor reaction time will not hurt your 1/4 mile time. In other 

words, if you sit at the starting line for 2 seconds after you should 

have launched, you will have a terrible reaction time, but your 1/

4 mile E.T. will still reflect the time it took your vehicle to move a 

1/4 mile once it crossed the starting line.