Description
- 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.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 12.00:1 Ratio 2:1, StageB 3 Stage – 15.11:1 Ratio 2:1
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears, with 20-degree pressure angle (1st stage)
- 4140 steel 20 DP gears, with 14.5-degree pressure angle (2nd and 3rd stage)
- 1/4″ thick aluminum side plates, pocketed
- US Digital encoder and pneumatic cylinder included
- 4140 steel output shafts
- Individual hardware within two-stage assembly
- 1x Red Tacky Grease, 14.2 gram
- 1x Encoder Mount Pad
- 1x EVO Shifter Shift Block Assembly
- 1x E4T Encoder
Specifications
- Two-speed, shift-on-the-fly gearbox
- Enhanced 4-tooth dog shifting method
- Motor input: two CIM or NEO motors
- Configurable with two or three interior stages
- Selection of various 1/2 inch output shafts
- Plates designed for mounting two motors
- Shipped assembled without motors installed
- Dog gear with 4 dogs on each face for increased strength
- Robust 1/8″ diameter shoulder screw
- Dog gear material: AMPCO 18 Bronze for added lubricity
- Super-strong shift block assembly with larger bearing and threaded steel housing
- Input stage uses 32 DP gears and a 15 tooth pinion gear
- High 85:15 first stage reduction
- Independent high and low ratio selection
- Swap ratios (A to B to A) as needed
- More encoder options available
- Aggressive weight reduction features
- Cluster gears with same features on both sides for easy assembly
- Optional 3rd stage provides additional C ratio choice of 1.14 or 2:1
- Can be mounted to an AM14U family chassis or a 2″x1″ box tube frame
- Pneumatic shift method with spring-extend pneumatic cylinder
- Extend Stroke: 4 lbs, Retract Stroke: 15.7 lbs
- Included 15 Tooth 32DP pinion gear
- Requires grease for proper operation and long life
- Encoder ratio: 3:1 between Output Shaft and Encoder Shaft
Unconditional Satisfaction Guarantee
