AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 45.33:1 Ratio 2:1, StageB 3 Stage - 09.54:1 Ratio 2:1

• AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 45.33:1 Ratio 2:1, StageB 3 Stage - 09.54:1 Ratio 2:1
• Advances shifter design for seamless transitions
• Allows motor input with CIM or NEO motors
• Offers selection of high and low gear ratios
• Enables easy disassembly without gear orientation concern
• Incorporates weight-reduction features

The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 45.33:1 Ratio 2:1, StageB 3 Stage - 09.54:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes, building on the legacy of previous models such as the AM Shifter, Super Shifter, and Sonic Shifter. This two-speed, shift-on-the-fly gearbox employs an enhanced 4-tooth dog shifting mechanism, allowing for seamless transitions between speeds. 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.

The EVO Shifter incorporates several improvements over its predecessors, including a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides increased strength and 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 85:15 first stage reduction. Users can independently select high and low ratios, with the option to swap ratios as needed. Additional encoder options are available, enhancing the gearbox's versatility.

The gearbox's design includes aggressive weight reduction features and allows for easy disassembly and reassembly without concern for gear orientation. An optional third stage offers an additional C ratio choice. The pneumatic shift method, powered by a spring-extend pneumatic cylinder, enables shifting while a robot is in motion. The gearbox's weight ranges from 2.9 to 3.5 pounds, depending on the stage configuration.

Note: Proper greasing is essential for optimal operation and longevity of the gearbox. It is recommended to run the gearbox for a short period without grease to allow for gear wear-in before applying grease to the spur gears periodically.