Description
- AndyMark EVO Shifter Short Keyed Shaft, StageA 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 07.56:1 Ratio
- Advances shifting gearbox technology
- Incorporates enhanced 4-tooth dog mechanism
- Supports two CIM or NEO motors
- Offers flexible output shaft selection
- Features aggressive weight reduction
The AndyMark EVO Shifter Short Keyed Shaft, StageA 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 07.56:1 Ratio represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates an enhanced 4-tooth dog shifting mechanism, allowing for seamless 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 output shaft selection. The gearbox is delivered assembled, though motors are not pre-installed.
Several improvements distinguish this model from its predecessors. The dog gear now features four dogs on each face, enhancing strength and durability. The use of AMPCO 18 Bronze for the dog gear material provides added lubricity, ensuring smooth operation. A robust shift block assembly with a larger bearing and threaded steel housing is included, contributing to the gearbox’s overall resilience. The input stage employs 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction of 85:15. Users can independently select high and low ratios, with the ability to swap between them as needed.
The gearbox also supports various encoder options, including the US Digital E4T, and features aggressive weight reduction through machined gears and plates. The cluster gears are designed for easy assembly and disassembly without concern for orientation. An optional third stage provides additional ratio choices, enhancing customization. The pneumatic shift method utilizes a spring-extend pneumatic cylinder, allowing shifts during acceleration, pushing, or deceleration.
Note: Ensure proper greasing and break-in procedures are followed for optimal performance and longevity. Use Red Tacky Grease after a 30-minute run-in period without grease to allow gear teeth to wear in. No grease is required on the AMPCO bronze dog gear.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Keyed Shaft, StageA 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 07.56:1 Ratio
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears
- 4140 steel 20 DP gears
- 1/4″ thick aluminum side plates, pocketed
- US Digital encoder
- Pneumatic cylinder
- Various hardware components 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
- Swap ratios (A to B to A) as needed
- More encoder options available
- Aggressive weight reduction features
- Cluster gears with identical features 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
- Encoder ratio: 3:1 on two-stage versions
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears, 4140 steel 20 DP gears
- 1/4″ thick aluminum side plates, pocketed
- US Digital encoder and pneumatic cylinder included
- 4140 steel output shafts
Unconditional Satisfaction Guarantee
