Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 25.90:1 Ratio 1.14:1, StageB 3 – 12.41:1 Ratio 1.14:1
- Incorporates smooth 4-tooth dog shifting method
- Supports two CIM or NEO motors
- Features robust AMPCO 18 Bronze dog gear
- Offers aggressive weight reduction
- Includes pneumatic shift method
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 25.90:1 Ratio 1.14:1, StageB 3 – 12.41:1 Ratio 1.14:1 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.
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 strength and lubricity. 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 can independently select high and low ratios, allowing for customizable performance.
The gearbox is designed with aggressive weight reduction features and includes more encoder options, such as the US Digital E4T. It also supports a pneumatic shift method, using a spring-extend pneumatic cylinder that enables shifting while a robot is in motion. The gearbox can be mounted to an AM14U family chassis or a 2″x1″ box tube frame using existing mounting plate holes.
Note: Proper greasing is essential for optimal operation and longevity of the gearbox. It is recommended to run the gearbox for 30 minutes without grease for a break-in period before applying grease to the spur gears periodically.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 25.90:1 Ratio 1.14:1, StageB 3 – 12.41:1 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
- 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, 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 for two-stage versions
Unconditional Satisfaction Guarantee
