Description
- AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 15.11:1 Ratio 2:1
- Incorporates enhanced 4-tooth dog shifting
- Allows independent high and low ratio selection
- Features AMPCO 18 Bronze dog gear for durability
- Supports two CIM or NEO motors
- Ships assembled with aggressive weight reduction
The AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 15.11:1 Ratio 2:1 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 performance. The gearbox is shipped assembled, though motors are not installed.
This model introduces several improvements over previous iterations, including a dog gear with four dogs on each face for increased durability and a robust 1/8″ diameter shoulder screw. The dog gear is crafted from AMPCO 18 Bronze, providing similar strength to stainless steel with added lubricity for smoother operation. The shift block assembly is reinforced with a larger bearing and threaded steel housing, enhancing its strength and reliability.
The gearbox features a high 85:15 first stage reduction, and users can independently select high and low ratios, allowing for tailored performance. The design includes aggressive weight reduction features and cluster gears that facilitate easy assembly. An optional third stage offers additional ratio choices, and the gearbox can be mounted to an AM14U family chassis or a 2″x1″ box tube frame.
The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for efficient shifting even under dynamic conditions. This ensures continued operation in the event of air pressure loss. The gearbox is designed with a 3:1 encoder ratio on two-stage versions, and it includes a US Digital encoder and pneumatic cylinder.
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 before applying grease periodically to the spur gears.
View moreWhat’s Included
- 1x AndyMark EVO Shifter am14u Family Shaft, StageA 3 Stage – 45.33:1 Ratio 2:1, StageB 3 Stage – 15.11:1 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
- Individual hardware within two-stage assembly
- Individual hardware within three-stage 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, but 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
- Pneumatic shift method with spring-extend pneumatic cylinder
- Encoder ratio: 3:1 on two-stage versions
- Shielded, flanged ball bearings
- 1117 steel 32 DP gears with 20-degree pressure angle (first stage)
- 4140 steel 20 DP gears with 14.5-degree pressure angle (second and third stage)
- 1/4 inch thick aluminum side plates, pocketed
- US Digital encoder and pneumatic cylinder included
- 4140 steel output shafts
Unconditional Satisfaction Guarantee
