AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 12.00:1 Ratio 2:1, StageB 3 Stage - 15.11:1 Ratio 2:1

• AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 12.00:1 Ratio 2:1, StageB 3 Stage - 15.11:1 Ratio 2:1
• Advances with two-speed shift-on-the-fly gearbox
• Incorporates improved 4-tooth dog shifting method
• Features AMPCO® 18 Bronze dog gear for smooth operation
• Supports two CIM or NEO motors for flexibility
• Equips pneumatic shift method for seamless transitions

The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 12.00:1 Ratio 2:1, StageB 3 Stage - 15.11:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates an enhanced 4-tooth dog shifting method, 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 performance. The gearbox is designed with mounting plates for two motors and is shipped assembled, though motors are not included.

The EVO Shifter features several improvements over previous models, including a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides added lubricity for smoother shifting. The shift block assembly is reinforced with a larger bearing and threaded steel housing, enhancing durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, achieving a high 85:15 first stage reduction. Users can independently select high and low ratios and swap them as needed, providing greater control over performance.

The gearbox is equipped with aggressive weight reduction features and cluster gears that facilitate easy assembly. An optional third stage offers an additional C ratio choice, and the gearbox can be mounted to an AM14U family chassis or a 2"x1" box tube frame. The pneumatic shift method employs a spring-extend pneumatic cylinder, allowing shifts to occur even during acceleration or deceleration.

The EVO Shifter requires grease for optimal operation and longevity, with a recommended break-in period before applying grease. The encoder ratio is 3:1 between the output shaft and encoder shaft, and various encoder options are available. The gearbox is designed for ease of use and maintenance, ensuring reliable performance in demanding applications.