Description
- AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 08.63:1 Ratio 1.14:1, StageB 3 – 18.71:1 Ratio 1.14:1
- Incorporates improved dog shifting method
- Compatible with CIM and NEO motors
- Features enhanced lubricity with AMPCO 18 Bronze
- Offers easy assembly with identical cluster gears
- Allows versatile configurations with optional third stage
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 08.63:1 Ratio 1.14:1, StageB 3 – 18.71:1 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 its application. The gearbox is shipped assembled, though motors are not installed.
The design improvements include a robust 1/8″ diameter shoulder screw and a dog gear made from AMPCO 18 Bronze, which provides added lubricity and strength. The shift block assembly is reinforced with a larger bearing and threaded steel housing, enhancing durability. 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 various encoder options, including the US Digital E4T.
The EVO Shifter employs a pneumatic shift method, powered by a spring-extend pneumatic cylinder, enabling shifts during acceleration, pushing, or deceleration. The gearbox features aggressive weight reduction and is designed for easy assembly with cluster gears that have identical features on both sides. An optional third stage provides an additional C ratio choice, enhancing versatility. The gearbox can be mounted to an AM14U family chassis or a 2″x1″ box tube frame using existing mounting plate holes.
View moreWhat’s Included
- 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 – 08.63:1 Ratio 1.14:1, StageB 3 – 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 included
- 4140 steel output shafts
- 1x Red Tacky Grease, 14.2 gram (am-2768)
- 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
- Dog gear with four dogs on each face for increased strength
- Robust 1/8″ diameter shoulder screw
- Dog gear material: AMPCO 18 Bronze for added lubricity
- 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
- Pneumatic shift method with spring-extend pneumatic cylinder
- Encoder ratio: 3:1 for two-stage versions
Unconditional Satisfaction Guarantee
