AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 15.11:1 Ratio 2:1, StageB 3 Stage - 32.74:1 Ratio 2:1

• AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 15.11:1 Ratio 2:1, StageB 3 Stage - 32.74:1 Ratio 2:1
• Incorporates refined 4-tooth dog shifting mechanism
• Supports two CIM or NEO motors for flexibility
• Features robust AMPCO® 18 Bronze dog gear
• Enables pneumatic shift-on-the-fly changes
• Mounts on AM14U chassis or 2"x1" box frame

The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 15.11:1 Ratio 2:1, StageB 3 Stage - 32.74:1 Ratio 2:1 is an advanced shifting transmission gearbox designed for high-performance applications. This two-speed, shift-on-the-fly gearbox incorporates a refined 4-tooth dog shifting mechanism, allowing for seamless transitions between gears. It is compatible with two CIM or NEO motors and can be configured with either two or three interior stages, offering flexibility in output shaft selection. The gearbox is delivered assembled, though motors are not pre-installed.

Significant enhancements have been made to the EVO Shifter, including a robust 1/8" diameter shoulder screw and the use of AMPCO® 18 Bronze for the dog gear, which provides increased strength and smooth shifting due to its lubricity. The shift block assembly has been reinforced with a larger bearing and threaded steel housing. The input stage features 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction. Users have the autonomy to select their high and low gear ratios independently, with the option to swap ratios as needed. The gearbox supports various encoder options, enhancing its adaptability.

The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for shifting. This mechanism allows for gear changes even during acceleration or deceleration. The gearbox is designed to be mounted on an AM14U family chassis or a 2"x1" box tube frame, using existing mounting plate holes. Weight ranges from 2.9 to 3.5 pounds, depending on the stage configuration.

Proper maintenance is crucial for optimal performance. It is recommended to run the gearbox for 30 minutes without grease for initial wear-in, followed by periodic application of grease to the spur gears. The AMPCO® bronze dog gear does not require greasing. The encoder ratio for two-stage versions is 3:1 between the output shaft and encoder shaft.