EVO Shifter 4 RedLine [4 in. Wheel Version]

developed from the lessons learned during our experience using the AM Shifter since 2004, the Super Shifter since 2007, and the Sonic Shifter since 2013.

This transmission is a two-speed, shift-on-the-fly gearbox, using an improved 4-tooth dog shifting method. For this version, the gearbox accepts up to four 775 class motors, such as the AndyMark RedLine Motor. No servo shifting is available with this shifter. This transmission is shipped assembled, but without the RedLine Motors installed, even if the motors are ordered with the gearbox.

Note: The EVO Shifter for RedLine will only be available in this ratio configuration and output shaft (which protrudes 5 in. from the output face of the gearbox,) configuration for the 2018 season. This particular configuration is specially optimized to directly drive 4" diameter wheels. AndyMark does not recommend using this ratio combination to directly drive wheels larger than 4 in. in diameter, at risk of permanent damage to the motors. If you would like to use wheels larger than 4" in diameter, AndyMark recommends using an external reduction device.

Gearing and Ratios:
Ratio A: 13.58:1 - 19.50 ft/s on 4" wheels*
Ratio B: 28.33:1 - 9.35 ft/s on 4" wheels*
*Specs derived from AndyMark RedLine Motors, assuming an 81% system efficiency.