Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 15.11:1 Ratio 2:1, StageB 3 Stage – 21.72:1 Ratio 2:1
- Incorporates advanced 4-tooth dog shifting
- Supports two CIM or NEO motors
- Provides multiple encoder options
- Utilizes robust AMPCO 18 Bronze gear
- Features aggressive weight reduction
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 15.11:1 Ratio 2:1, StageB 3 Stage – 21.72:1 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 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 performance. The gearbox is shipped assembled, though motors are not installed.
Significant improvements have been made over previous models, including the use of AMPCO 18 Bronze for the dog gear, which provides added lubricity and strength. The robust shift block assembly now includes a larger bearing and threaded steel housing, enhancing durability. The input stage features 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction of 85:15. Users have the ability to independently select high and low ratios, and the gearbox supports multiple encoder options, including the US Digital E4T.
The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder that allows shifting while a robot is in motion. The gearbox is designed with aggressive weight reduction features and can be mounted to various chassis configurations. The optional third stage provides additional ratio choices, further enhancing its adaptability. The gearbox requires proper greasing for optimal operation, with a recommended break-in period to ensure smooth performance. The encoder ratio for two-stage versions is 3:1, providing precise control and feedback.
Note: Ensure proper installation and maintenance procedures are followed to guarantee safe and efficient operation.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 15.11:1 Ratio 2:1, StageB 3 Stage – 21.72:1 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
- 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, 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
- More encoder options available
- Aggressive weight reduction features
- Cluster gears with identical features surrounding the bore on both sides
- 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
- Included 15-tooth 32DP pinion gear
- Encoder ratio: 3:1 on two-stage versions
Unconditional Satisfaction Guarantee
