AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 21.72:1 Ratio 2:1, StageB 3 Stage - 32.74:1 Ratio 2:1

• AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 21.72:1 Ratio 2:1, StageB 3 Stage - 32.74:1 Ratio 2:1
• Enhances transition with 4-tooth dog shifting
• Accommodates two CIM or NEO motors
• Offers flexible two or three-stage configuration
• Features AMPCO® 18 Bronze dog gear
• Supports multiple encoder options

The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage - 21.72:1 Ratio 2:1, StageB 3 Stage - 32.74:1 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 accommodates motor inputs from 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, even if included in the order.

The EVO Shifter incorporates several enhancements over previous models, including a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides added strength and lubricity. The shift block assembly is reinforced with a larger bearing and threaded steel housing, ensuring durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, achieving a high 85:15 first stage reduction. Users have the freedom to select independent high and low ratios, and the gearbox supports various encoder options, including the US Digital E4T.

The gearbox features aggressive weight reduction through machined gears and plates, and the cluster gears are designed for easy assembly without concern for orientation. An optional third stage offers an additional C ratio choice. The EVO Shifter employs a pneumatic shift method with a spring-extend pneumatic cylinder, allowing for seamless shifting even during acceleration or deceleration. It is compatible with an AM14U family chassis or a 2"x1" box tube frame, providing versatility in mounting options.

Note: Ensure proper greasing and break-in procedures are followed for optimal performance and longevity of the gearbox.