Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 45.33:1 Ratio 2:1, StageB 3 – 12.00:1 Ratio 2:1
- Advances shifting with 4-tooth dog mechanism
- Supports two CIM or NEO motors
- Includes aggressive weight reduction
- Offers flexible gear stage configuration
- Features pneumatic shift method
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 45.33:1 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 incorporates a refined 4-tooth dog shifting mechanism, 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 included.
Significant improvements have been made over previous models, including the use of AMPCO 18 Bronze for the dog gear, which enhances strength and lubricity. The shift block assembly has been reinforced with a larger bearing and threaded steel housing, contributing to the gearbox’s durability. The input stage employs 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction. Users have the autonomy to select their preferred high and low ratios, with the option to swap ratios as needed.
The EVO Shifter utilizes a pneumatic shift method, powered by a spring-extend pneumatic cylinder, enabling gear shifts even during acceleration or deceleration. The gearbox features aggressive weight reduction techniques and can be mounted to an AM14U family chassis or a 2″x1″ box tube frame. It includes a US Digital encoder and offers additional encoder options for enhanced functionality.
Note: Proper greasing is essential for optimal operation and longevity of the gearbox. It is recommended to run the gearbox for a short period without grease to allow the gear teeth to wear in before applying grease.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 45.33:1 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
- Various spacers, bearings, and hardware for assembly
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
- Pneumatic shift method with spring-extend pneumatic cylinder
- 15-tooth 32DP pinion gear included
- Encoder ratio: 3:1 for two-stage versions
- Aggressive weight reduction features
- Additional encoder options available
- Can be mounted to an AM14U family chassis or a 2″x1″ box tube frame
Unconditional Satisfaction Guarantee
