Description
- AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 12.00:1 Ratio 2:1
- Advances two-speed shifting with 4-tooth dog method
- Accommodates two CIM or NEO motors
- Enhances durability with AMPCO 18 Bronze
- Reduces weight with machined gears and plates
- Facilitates assembly with easy cluster gear orientation
The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 12.00:1 Ratio 2:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox is designed with an improved 4-tooth dog shifting method, allowing for smooth and efficient operation. It accommodates motor inputs from 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, even if included in the order.
The EVO Shifter incorporates several enhancements 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 shift block assembly is reinforced with a larger bearing and threaded steel housing, ensuring durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, facilitating a high first stage reduction of 85:15. Users have the freedom to independently select high and low ratios and can swap between them as needed.
The gearbox features aggressive weight reduction through machined gears and plates, and the cluster gears are designed for easy assembly without concern for orientation. An optional third stage offers an additional C ratio choice. The pneumatic shift method, powered by a spring-extend pneumatic cylinder, allows for seamless shifting even during acceleration or deceleration. The gearbox is compatible with various encoder options, including the US Digital E4T and the CTRE SRX mag encoder.
Note: Proper greasing is essential for optimal operation and longevity of the gearbox. It is recommended to run the gearbox for 30 minutes without grease for initial wear-in, followed by periodic application of grease to the spur gears. No grease is required on the AMPCO bronze dog gear.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 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 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 for easy assembly
- 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
- 15-tooth 32DP pinion gear included
- Red Loctite 271 recommended for pinion installation
- Gearbox requires grease for proper operation
- Encoder ratio: 3:1 on two-stage versions
Unconditional Satisfaction Guarantee
