Description
- AndyMark EVO Shifter am14u Family Hex Shaft, StageA 3 Stage – 06.86:1 Ratio 1.14:1, StageB 3 Stage – 18.71:1 Ratio 1.14:1
- Represents a significant advancement in gearboxes
- Incorporates a refined 4-tooth dog shifting mechanism
- Features aggressive weight reduction techniques
- Allows for seamless transitions between gears
- Configured with two or three interior stages
The AndyMark EVO Shifter am14u Family Hex Shaft, StageA 3 Stage – 06.86:1 Ratio 1.14:1, StageB 3 Stage – 18.71:1 Ratio 1.14:1 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 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.
Enhancements in this model include a robust dog gear with four dogs on each face, crafted from AMPCO 18 Bronze, which provides increased strength and lubricity compared to previous stainless steel designs. The shift block assembly has been fortified with a larger bearing and threaded steel housing, ensuring durability. The input stage utilizes 32 DP gears and a 15-tooth pinion gear, achieving a high first stage reduction of 85:15. Users have the autonomy to select their preferred high and low ratios, with the option to interchange them as needed.
The gearbox features aggressive weight reduction techniques and is designed for easy assembly, with cluster gears that are identical on both sides. It 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, enabling shifts even during acceleration or deceleration. The gearbox’s weight ranges from 2.9 to 3.5 pounds, depending on the stage configuration.
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.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Hex Shaft, StageA 3 Stage – 06.86:1 Ratio 1.14:1, StageB 3 Stage – 18.71:1 Ratio 1.14:1
- 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
- 4140 steel output shafts
- 1x Red Tacky Grease, 14.2 gram
- 1x Encoder Mount Pad
- 1x EVO Shifter Shift Block Assembly
- 1x E4T Encoder
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 inch 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
- More encoder options available
- Aggressive weight reduction features
- Cluster gears with same features on both sides for easy assembly
- Optional third 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
- Included 15-tooth 32DP pinion gear
- Encoder ratio: 3:1 on two-stage versions
Unconditional Satisfaction Guarantee
