Description
- AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 12.41:1 Ratio 1.14:1, StageB 3 Stage – 05.45:1 Ratio 1.14:1
- Enhances shifting with 4-tooth dog method
- Supports two CIM or NEO motors
- Offers flexible stage configurations
- Includes robust AMPCO 18 Bronze dog gear
- Features aggressive weight reduction design
The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 12.41:1 Ratio 1.14:1, StageB 3 Stage – 05.45:1 Ratio 1.14:1 represents a significant advancement in shifting transmission gearboxes. This two-speed, shift-on-the-fly gearbox incorporates an enhanced 4-tooth dog shifting method, allowing for seamless transitions between speeds. 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.
The EVO Shifter features several improvements over previous models, including a robust 1/8″ diameter shoulder screw and a dog gear made from AMPCO 18 Bronze, which provides added lubricity for smoother shifting. 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, achieving a high 85:15 first stage reduction. Users can independently select high and low ratios, and the gearbox supports easy swapping of ratios. Additional encoder options are available, enhancing its adaptability.
The gearbox is designed with aggressive weight reduction features and allows for straightforward assembly and disassembly due to uniform cluster gear features. An optional third stage offers an additional C ratio choice. The EVO Shifter can be mounted to an AM14U family chassis or a 2″x1″ box tube frame. It employs a pneumatic shift method powered by a spring-extend pneumatic cylinder, enabling shifts even during acceleration or deceleration.
Note: Proper greasing is essential for optimal operation and longevity. It is recommended to run the gearbox for 30 minutes without grease initially to allow the gear teeth to wear in before applying grease periodically. No grease is required on the AMPCO bronze dog gear.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 12.41:1 Ratio 1.14:1, StageB 3 Stage – 05.45:1 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 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
- 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 the 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
- Encoder ratio: 3:1 on two-stage versions
Unconditional Satisfaction Guarantee
