Description
- AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 Stage – 06.00:1 Ratio, StageB 2 Stage – 16.37:1 Ratio
- Features smooth gear transitions
- Offers flexible motor compatibility
- Boasts enhanced durability and strength
- Enables pneumatic shift method
- Allows easy assembly and disassembly
The AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 Stage – 06.00:1 Ratio, StageB 2 Stage – 16.37:1 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 smooth and efficient 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 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 added lubricity and strength. 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 first stage reduction of 85:15. Users have the autonomy to select their preferred high and low ratios, with the ability to swap ratios as needed.
The EVO Shifter is equipped with a pneumatic shift method, utilizing a spring-extend pneumatic cylinder that allows for gear shifting 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, various encoder options, and the inclusion of a US Digital encoder and pneumatic cylinder. The gearbox is shipped assembled, though motors are not installed. Proper maintenance involves running the gearbox without grease for initial wear-in, followed by periodic application of Red Tacky Grease to ensure optimal performance. Note: Ensure proper installation of pinion gears, especially when using a NEO motor, as a 3-ton arbor press is required due to the interference fit.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 Stage – 06.00:1 Ratio, StageB 2 Stage – 16.37:1 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
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 internal stages
- Selection of various 1/2 inch output shafts
- Plates designed for mounting two motors
- Shipped assembled without motors installed
- Dog gear with four dogs on each face for increased strength
- Robust 1/8″ diameter shoulder screw
- Dog gear material: AMPCO 18 Bronze
- 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 identical features on both sides for easy assembly
- Optional third stage provides additional C ratio choice of 1.14 or 2:1
- Mountable to AM14U family chassis or 2″x1″ box tube frame
- Pneumatic shift method with spring-extend pneumatic cylinder
- Extend Stroke: 4 lbs, Retract Stroke: 15.7 lbs
- Encoder Ratio: 3:1 on two-stage versions
Unconditional Satisfaction Guarantee
