AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 15.11:1 Ratio 2:1
Features two-speed shift-on-the-fly gearbox
Incorporates 4-tooth dog shifting mechanism
Utilizes pneumatic shift for reliable operation
Allows high and low ratio selection
Offers compatibility with CIM or NEO motors
The AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 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 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 performance. The gearbox is shipped assembled, though motors are not included.
The design improvements include a robust 1/8" diameter shoulder screw and a dog gear made from AMPCO® 18 Bronze, which provides increased strength and lubricity compared to previous stainless steel designs. The gearbox features a super-strong shift block assembly 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 first stage reduction of 85:15. Users can independently select high and low ratios and swap them as needed, providing greater control over performance.
The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder for reliable operation even under varying conditions such as acceleration or deceleration. The gearbox is designed with aggressive weight reduction features and includes various encoder options, such as the US Digital E4T. It can be mounted to an AM14U family chassis or a 2"x1" box tube frame using existing mounting plate holes.
Note: Ensure proper greasing and break-in procedures are followed for optimal performance and longevity of the gearbox.
1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 45.33:1 Ratio 2:1, StageB 3 - 15.11:1 Ratio 2:1
Shielded, flanged ball bearings
1117 steel 32 DP gears
4140 steel 20 DP gears
1/4" thick aluminum side plates, pocketed
US Digital encoder and pneumatic cylinder
4140 steel output shafts
1x Red Tacky Grease, 14.2 gram
Various spacers, bearings, and hardware for assembly
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
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
Swap ratios (A to B to A) as needed
More encoder options available
Aggressive weight reduction features
Cluster gears with the same features on both sides
Optional third stage provides additional C ratio choice of 1.14 or 2:1
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
Shielded, flanged ball bearings
1117 steel 32 DP gears, 4140 steel 20 DP gears
1/4" thick aluminum side plates, pocketed
US Digital encoder and pneumatic cylinder included
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