Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 09.54:1 Ratio 2:1, StageB 3 Stage – 21.72:1 Ratio 2:1
- Incorporates two-speed, shift-on-the-fly gearbox
- Utilizes improved 4-tooth dog shifting method
- Compatible with CIM or NEO motors
- Features robust AMPCO 18 Bronze gear
- Employs pneumatic shift method for smooth transitions
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 09.54:1 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 a robust 1/8″ diameter shoulder screw and a dog gear made from AMPCO 18 Bronze, which provides added lubricity and strength. The gearbox features a super-strong shift block assembly 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 85:15 first stage reduction. Users can independently select high and low ratios, and the gearbox supports various encoder options, including the US Digital E4T.
The EVO Shifter employs a pneumatic shift method, powered by a spring-extend pneumatic cylinder, allowing for gear shifts even during acceleration or deceleration. The gearbox is designed with aggressive weight reduction features and can be mounted to an AM14U family chassis or a 2″x1″ box tube frame using existing mounting plate holes. The optional third stage provides an additional C ratio choice, further enhancing its versatility.
Note: Ensure proper greasing and break-in procedures are followed for optimal performance and longevity of the gearbox.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 Stage – 09.54:1 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 three-stage assembly (excluding gears from ratio A and B)
Specifications
- Two-speed, shift-on-the-fly gearbox
- Improved four-tooth dog shifting method
- Motor input: two CIM or NEO motors
- Configurable with two or three interior 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 for added lubricity
- 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 same 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
Unconditional Satisfaction Guarantee
