AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 15.11:1 Ratio 2:1, StageB 3 - 12.00:1 Ratio 2:1

• AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 15.11:1 Ratio 2:1, StageB 3 - 12.00:1 Ratio 2:1
• Features two-speed, shift-on-the-fly transmission
• Utilizes improved 4-tooth dog shifting method
• Compatible with CIM or NEO motor systems
• Employs pneumatic shift with spring-extend cylinder
• Includes US Digital E4T encoder for precision

The AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 15.11:1 Ratio 2:1, StageB 3 - 12.00:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox is designed with an improved 4-tooth dog shifting method, allowing for smooth and efficient 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 performance. The gearbox is shipped assembled, though motors are not installed.

Significant improvements have been made over previous models, including the use of AMPCO® 18 Bronze for the dog gear, which enhances strength and lubricity. The gearbox features a robust shift block assembly with a larger bearing and threaded steel housing, contributing to its durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, providing a high first stage reduction. Users have the ability to independently select high and low ratios, allowing for customizable performance.

The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder that enables shifting even during acceleration or deceleration. This feature ensures continued operation in the event of air pressure loss. The gearbox is designed with aggressive weight reduction features and can be mounted to an AM14U family chassis or a 2"x1" box tube frame. It includes a US Digital E4T encoder, enhancing its functionality.

Note: All AndyMark gearboxes require proper greasing for optimal operation and longevity. It is recommended to run the gearbox for 30 minutes without grease for initial wear-in before applying grease to the spur gears periodically.