Description
- AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 16.37:1 Ratio
- Incorporates two-speed gearbox for smooth transitions
- Utilizes 4-tooth dog shifting for efficiency
- Supports two or three interior stage configurations
- Features robust AMPCO 18 Bronze dog gear
- Offers aggressive weight reduction features
The AndyMark EVO Shifter am14u Family Hex Shaft, StageA 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 16.37:1 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 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 output shaft selection. The gearbox is delivered assembled, though motors are not pre-installed.
Significant improvements have been made over previous models, including a robust 1/8″ diameter shoulder screw and a dog gear crafted from AMPCO 18 Bronze, which provides added strength and lubricity. The shift block assembly has been reinforced with a larger bearing and threaded steel housing. The input stage features 32 DP gears and a 15-tooth pinion gear, facilitating a high 85:15 first stage reduction. Users can independently select high and low ratios, with the option to swap ratios as needed. Additional encoder options are available, enhancing the gearbox’s adaptability.
The EVO Shifter is designed with aggressive weight reduction features and can be mounted to an AM14U family chassis or a 2″x1″ box tube frame. It employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for reliable performance even under varying conditions. The gearbox’s weight ranges from 2.9 to 3.5 pounds, depending on the 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 2 Stage – 10.86:1 Ratio, StageB 2 Stage – 16.37:1 Ratio
- 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
- Motor input: 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
- 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
- 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 two-stage versions
Unconditional Satisfaction Guarantee
