Description
- AndyMark EVO Shifter AM14U Family Shaft, Stage A 3 Stage – 32.74:1 Ratio 2:1, Stage B 3 Stage – 12.00:1 Ratio 2:1
- Enhances gearbox shifts with 4-tooth dog method
- Accommodates two CIM or NEO motors
- Offers flexible two or three-stage configuration
- Includes robust AMPCO 18 Bronze dog gear
- Employs aggressive weight reduction design
The AndyMark EVO Shifter AM14U Family Shaft, Stage A 3 Stage – 32.74:1 Ratio 2:1, Stage B 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 input 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.
Significant enhancements have been incorporated into the EVO Shifter, including a robust 1/8″ diameter shoulder screw and a dog gear made from AMPCO 18 Bronze, which provides added strength and lubricity. The shift block assembly is reinforced with a larger bearing and threaded steel housing. 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 autonomy to select their high and low ratios independently and can swap between ratios as needed. The gearbox also offers more encoder options, including the US Digital E4T.
The EVO Shifter features aggressive weight reduction through machined gears and plates, and its cluster gears are designed for easy assembly. An optional third stage provides additional ratio choices, and the gearbox can be mounted to an AM14U family chassis or a 2″x1″ box tube frame. The pneumatic shift method employs a spring-extend pneumatic cylinder, allowing shifts to occur even during acceleration or deceleration.
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 a break-in period before applying grease to the spur gears periodically. No grease is required on the AMPCO bronze dog gear.
View moreWhat’s Included
- 1x AndyMark EVO Shifter AM14U Family Shaft, Stage A 3 Stage – 32.74:1 Ratio 2:1, Stage B 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 4 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 3rd stage provides additional C ratio choice of 1.14 or 2:1
- Can be mounted to an AM14U family chassis or a 2″x1″ box tube frame
- Pneumatic shift method with spring-extend pneumatic cylinder
- Extend Stroke: 4 lbs, Retract Stroke: 15.7 lbs
- Encoder Ratio: 3:1 on 2 stage versions
Unconditional Satisfaction Guarantee
