Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 06.86:1 Ratio 1.14:1, StageB 3 – 12.41:1 Ratio 1.14:1
- Advances shifting technology significantly
- Accommodates two CIM or NEO motors
- Enhances strength with AMPCO 18 Bronze
- Reduces weight aggressively
- Ships assembled without motors
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 06.86:1 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 is designed to accommodate two CIM or NEO motors, offering flexibility in motor input. The gearbox can be configured with either two or three interior stages, providing users with the ability to select various output shaft options. The design incorporates a robust 4-tooth dog shifting method, enhancing the strength and reliability of the transmission.
Significant improvements have been made over previous models, including the use of AMPCO 18 Bronze for the dog gear, which offers enhanced lubricity and strength. The shift block assembly has been upgraded with a larger bearing and a threaded steel housing, contributing to the overall durability of the gearbox. 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 gear 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 for seamless shifting during acceleration, pushing, or deceleration. The gearbox is designed with aggressive weight reduction features, making it suitable for mounting on an AM14U family chassis or a 2″x1″ box tube frame. The gearbox is shipped assembled, though motors are not installed, even if included in the order. Proper greasing is essential for optimal operation, with a recommended break-in period before applying grease to ensure smooth performance.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 06.86:1 Ratio 1.14:1, StageB 3 – 12.41:1 Ratio 1.14:1
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears
- 4140 steel 20 DP gears
- 1/4″ thick aluminum side plates
- US Digital encoder and pneumatic cylinder
- 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
- Compatible with two CIM or NEO motors
- Configurable with two or three interior 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
- 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
Unconditional Satisfaction Guarantee
