Description
- AndyMark EVO Shifter AM14U Family Hex Shaft, Stage A 2 Stage – 16.37:1 Ratio, Stage B 2 Stage – 04.77:1 Ratio
- Incorporates advanced shift-on-the-fly gearbox
- Enhances strength with AMPCO 18 Bronze dog gear
- Allows customizable high and low ratio selection
- Features easy mount to AM14U chassis or box tube
- Offers aggressive weight reduction and encoder options
The AndyMark EVO Shifter AM14U Family Hex Shaft, Stage A 2 Stage – 16.37:1 Ratio, Stage B 2 Stage – 04.77:1 Ratio represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates 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 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 increased strength and lubricity. The shift block assembly has been 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 first stage reduction of 85:15. Users can independently select high and low ratios, allowing for customizable performance.
The EVO Shifter is equipped with a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for reliable operation even during acceleration or deceleration. The gearbox is designed for easy assembly and disassembly, with cluster gears featuring identical characteristics on both sides. It can be mounted to an AM14U family chassis or a 2″x1″ box tube frame, providing versatility in application.
Additional features include aggressive weight reduction, a variety of encoder options, and the ability to add an optional third stage for further ratio customization. The gearbox is shipped assembled, excluding motors, and requires the application of Red Tacky Grease for optimal performance and longevity. The encoder ratio for two-stage versions is 3:1, ensuring precise control and feedback during operation.
View moreWhat’s Included
- 1x AndyMark EVO Shifter AM14U Family Hex Shaft, Stage A 2 Stage – 16.37:1 Ratio, Stage B 2 Stage – 04.77:1 Ratio
- 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
- 1x Red Tacky Grease, 14.2 gram
- Various spacers, bearings, and hardware for assembly
Dimensions
Specifications
- Two-speed, shift-on-the-fly gearbox
- Enhanced 4-tooth dog shifting method
- Compatible with two CIM or NEO motors
- Configurable with two or three internal stages
- Selection of various 1/2 inch output shafts
- Plates designed for mounting two motors
- Shipped assembled, excluding motors
- Dog gear with four 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
- More encoder options available
- Aggressive weight reduction features
- Cluster gears with identical features on both sides for easy assembly
- Optional third 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
- Encoder ratio: 3:1 for two-stage versions
Unconditional Satisfaction Guarantee
