AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 05.45:1 Ratio 1.14:1, StageB 3 - 08.63:1 Ratio 1.14:1

AndyMarkSKU: RB-And-1699
Manufacturer #: EVO-2-054-086-SH3

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Sale price $505.00

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Description

  • AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 05.45:1 Ratio 1.14:1, StageB 3 - 08.63:1 Ratio 1.14:1
  • Features two-speed shift-on-the-fly gearbox
  • Incorporates robust AMPCO® 18 Bronze dog gear
  • Compatible with CIM or NEO motors
  • Offers versatile high and low gear ratios
  • Includes pneumatic shift method for seamless operation

The AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 05.45:1 Ratio 1.14:1, StageB 3 - 08.63:1 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 mechanism, allowing for seamless 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 installed.

Significant improvements have been made 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 operation. 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 85:15 first stage reduction. Users can independently select high and low ratios, allowing for customized performance.

The EVO Shifter employs a pneumatic shift method, utilizing a spring-extend pneumatic cylinder that enables shifting even during acceleration or deceleration. This design ensures that the robot can continue to operate using Ratio A if air pressure is lost. The gearbox also includes aggressive weight reduction features and is designed for easy assembly and disassembly, with cluster gears that have identical features on both sides.

The gearbox offers more encoder options, including the US Digital E4T encoder, and can be mounted to an AM14U family chassis or a 2"x1" box tube frame using existing mounting plate holes. The optional third stage provides an additional C ratio choice, further enhancing its versatility. The gearbox requires periodic application of grease for optimal performance and longevity, though no grease is needed on the AMPCO® bronze dog gear.

  • 1x AndyMark EVO Shifter Short Hex Shaft, StageA 3 - 05.45:1 Ratio 1.14:1, StageB 3 - 08.63:1 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
  • Individual hardware within two-stage assembly
  • 1x Red Tacky Grease, 14.2 gram
  • 1x Encoder Mount Pad
  • 1x EVO Shifter Shift Block Assembly
  • 1x E4T Encoder

EVO Shifter Short Hex Shaft, StageA 3 Stage - Dimensions

  • 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 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 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
  • Extend stroke: 4 lbs, retract stroke: 15.7 lbs
  • Included 15-tooth 32DP pinion gear
  • Encoder ratio: 3:1 on two-stage versions

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