Description
- AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 25.90:1 Ratio 1.14:1, StageB 3 Stage – 06.90:1 Ratio 1.14:1
- Features two-speed, shift-on-the-fly gearbox
- Incorporates strong AMPCO 18 Bronze dog gear
- Accommodates two CIM or NEO motors
- Offers configurable two or three interior stages
- Includes aggressive weight reduction design
The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 25.90:1 Ratio 1.14:1, StageB 3 Stage – 06.90:1 Ratio 1.14:1 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 first stage reduction of 85:15. Users have the freedom to select independent high and low ratios and can swap between them as needed. The gearbox also features aggressive weight reduction and easy assembly due to uniform cluster gear design.
The pneumatic shift method employs a spring-extend pneumatic cylinder, enabling gear shifts while a robot is in motion. This system ensures that the robot can continue operating in Ratio A even if air pressure is lost. The gearbox is compatible with various encoder options, including the US Digital E4T, and offers an optional third stage for additional ratio choices. The EVO Shifter is designed for easy mounting to an AM14U family chassis or a 2″x1″ box tube frame, making it a versatile choice for robotics applications.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 25.90:1 Ratio 1.14:1, StageB 3 Stage – 06.90:1 Ratio 1.14:1
- 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 (excluding gears from ratio A and B)
- 1x Red tacky grease, 14.2 gram
- Encoder mount pad
- EVO Shifter shift block assembly
- 4 tooth dog, AMPCO 18 bronze
- Shift cylinder, 3/4″ bore, 1/2 stroke spring extend
- E4T encoder
Specifications
- Two-speed, shift-on-the-fly gearbox
- Improved four-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 four dogs on each face for increased strength
- Robust 1/8 inch 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 same features on both sides for easy assembly
- Optional third stage provides additional C ratio choice of 1.14 or 2:1
- 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
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears, 4140 steel 20 DP gears
- 1/4 inch thick aluminum side plates, pocketed
- US Digital encoder and pneumatic cylinder included
- 4140 steel output shafts
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