HOW THE GEARMASTER WORKS

The image above shows how the GearMaster display might look in a typical driving configuration. The vertical lines to the left of the numberals 5, 6, 7 and 8 represent the split gears available on some transmissions.

Tachometer Arrow

The arrow on the bottom dynamically scrolls left and right relative to the speed of the engine. It is essentially a tachometer.

Range Lines

There are two horizontal lines above the arrow.  The upper (longer) line represents the entire operating RPM range of the engine, say 700 to 1900 RPM for a typical large diesel truck.  The second line (just below the first line) represents the so called "sweet spot."  This is where the engine delivers its best performance.  Driving in this range will normally yield the best fuel economy.

The Gear Numbers

The numbers above the range lines scroll left and right relative to the speed of the vehicle, each number being calibrated to its respective gear. The numbers move to the right with increasing vehicle speed and move to the left with decreasing vehicle speed.

Visual Synchronization of Available Gears

The GearMaster presents a visual synchronization of available gears on its graphic display. The gear numbers displayed anywhere directly above the operating range line are available to the driver. Any gear numbers that are not displayed above the range line should not be attempted. Whenever a number is aligned directly above the arrow, the engine and vehicle speed are perfectly synchronized for that gear and the shift can be smoothly made - with or without the use of the clutch.

Digital Tachometer and Speedometer

The GearMaster can be optionally configured to display engine speed (RPM) and vehicle speed (MPH), as shown below in the lower left and lower right corners.    

For a better understanding of how the GearMaster would appear under various 

driving conditions, refer to the images below.

Engine at idle (700 RPM).   Vehicle not moving

Engine at high RPM (1800 RPM).   Vehicle is not moving

First gear is engaged.   Engine is near the middle of its operating range.                        Vehicle is moving slowly. Second gear available

Clutch is disengaged (or transmission is in neutral).  Engine near idle.                           Vehicle is coasting. 3rd and 4th Gears are available.                   Note that 1st gear has disappeared off the right end of the screen.

Vehicle being driven in 7th gear.                                                               —or—                  Transmission is in neutral but is ready to be shifted into 7th gear         (with or without use of the clutch). 6th gear and 8th gear are also available. 5th and 9th gear are not available.