Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 32.74:1 Ratio 2:1, StageB 3 – 12.00:1 Ratio 2:1
- Advances with two-speed, shift-on-the-fly technology
- Features robust 4-tooth dog shifting
- Incorporates larger bearing and threaded housing
- Supports pneumatic shift method
- Enables high and low ratio selection
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 32.74:1 Ratio 2:1, StageB 3 – 12.00:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox is designed for use with two CIM or NEO motors and can be configured with either two or three interior stages. The gearbox features an improved 4-tooth dog shifting method, enhancing strength and durability with a robust 1/8″ diameter shoulder screw and AMPCO 18 Bronze dog gear material, which offers added lubricity for smoother shifting.
The EVO Shifter incorporates a new shift block assembly with a larger bearing and threaded steel housing, contributing to its robust design. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, allowing for a high first stage reduction. Users have the flexibility to independently select high and low ratios, and the gearbox supports various encoder options, including the US Digital E4T. The design includes aggressive weight reduction features and can be mounted to an AM14U family chassis or a 2″x1″ box tube frame.
The gearbox employs a pneumatic shift method with a spring-extend pneumatic cylinder, enabling shifting while a robot is in motion. The EVO Shifter is shipped assembled but without motors installed. It requires proper greasing for optimal operation, with a recommended break-in period before applying grease. The gearbox’s design facilitates easy disassembly and assembly without concern for gear orientation, and it includes a range of spacers, bearings, and hardware for assembly.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 32.74:1 Ratio 2:1, StageB 3 – 12.00:1 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
- 1x Red Tacky Grease, 14.2 gram (am-2768)
- Various spacers, bearings, and hardware for assembly
Specifications
- Two-speed, shift-on-the-fly gearbox
- Compatible with two CIM or NEO motors
- Configurable with two or three internal stages
- Improved 4-tooth dog shifting method
- Robust 1/8″ diameter shoulder screw
- Dog gear material: AMPCO 18 Bronze
- New shift block assembly with larger bearing and threaded steel housing
- Input stage uses 32 DP gears and a 15-tooth pinion gear
- Allows independent selection of high and low ratios
- More encoder options available
- Aggressive weight reduction features
- Can be mounted to an AM14U family chassis or a 2″x1″ box tube frame
- Pneumatic shift method with spring-extend pneumatic cylinder
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