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3 CIM Ball Shifter

As the name implies, the new 3 CIM Ball Shifter provides mounting locations for up to 3 CIM-style motors (or gearboxes with this same mounting pattern). This allows FRC teams to build drivetrains and mechanisms with even more power. Thanks to customer feedback, we've incorporated a number of subtle improvements into the 3 CIM Ball Shifter to ensure it is built for rigorous FRC competition.



  • Designed for use with up to 3 CIM-style motors or gearboxes

  • Housing is completely enclosed

  • AGMA 11 quality gears with teflon infused ceramic coating

  • Shifts with Pancake Pneumatic Cylinder (not included)


Note: A pneumatic shifting cylinder and fitting kit is not included in the Ball Shifter kit. Be sure to add these below in the "Pneumatic Cylinder & Fitting Options" category if needed.

Availability: In stock

$109.99
  • - In Stock
  • - Out Of Stock
  • - Backorder

Description

Details

As the name implies, the new 3 CIM Ball Shifter provides mounting locations for up to 3 CIM-style motors (or gearboxes with this same mounting pattern). This allows FRC teams to build drivetrains and mechanisms with even more power. Thanks to customer feedback, we've incorporated a number of subtle improvements into the 3 CIM Ball Shifter to ensure it is built for rigorous FRC competition.

This gearbox provides the same Ball-Lock shifting method as the original Ball Shifter, but also allows users to change the shifting spread between high & low gears. This gearbox has three different shifter spreads: 2.16x, 2.65x, and 3.68x.

This new gearbox features a lightweight plastic housing that includes the standard VEXpro mounting features for face mounting. In addition, it has hex-nuts embedded in its sides which also allow for edge mounting. The housing also includes internal features which will keep motor screws from dropping inside the gearbox while they’re being installed.

The 3 CIM Ball Shifter comes standard as a 2-stage gearbox, but includes options for designers to include a 3rd gear stage for larger reductions; in this setup designers can also customize the overall gearbox ratio by choosing between four different 3rd stage gearsets (64:20, 60:24, 54:30, 50:34).

The 3rd stage output plate is shaped to allow for configurations in which wheels are directly mounted on the gearbox output shaft. This makes this gearbox well suited for West Coast-style drivetrains.

  • Designed for up to 3 CIM-style motors or gearboxes
  • Ball-lock shifter method enables smooth shifting, even at full speed
  • Housing is completely enclosed - keeps metal chips out, grease in
  • Face mount using standard mounting holes
  • Side mount using the embedded hex nuts for easier integration into your design
  • Designed to mount a Grayhill 63R series encoder (can be adapted for any encoder with male 1/4" shaft)
  • Assembly Required, see instructions below
  • Encoders, Motors, Cylinder not included

 

3 CIM Ball Shifter Reduction Stage:

Initial Stage: 50:12
High Gear Stage: 34:50

Low Gear Stage Option 1 (2.16x Shifter Spread): 50:34
Low Gear Stage Option 1 (2.65x Shifter Spread): 54:30
Low Gear Stage Option 1 (3.68x Shifter Spread): 60:24

3rd Stage Option 1: 64:20
3rd Stage Option 2: 60:24
3rd Stage Option 3: 54:30
3rd Stage Option 4: 50:34

3 CIM Ball Shifter Overall Reductions:

The VEXpro 3 CIM Ball Shifter provides three different shifter spread options to teams. These options were chosen specifically to serve the needs of FRC designers. When designing an FRC drivetrain, teams typically try to ensure that the robot low-gear can survive a continuous pushing match (with high traction wheels) without tripping breakers. They then choose a high-gear which is "fast" enough to zip around the field, without being uncontrollable or accelerating too slowly.

The three options provided allow teams to find a balance which makes their high gear as fast as they want it, and gives their low gear as much torque they need.

Tech Specs

Details

Kit Contents
3 CIM Ball Shifter Base Kit
3 CIM Ball Shifter Base Kit with 3rd Stage
3 CIM Ball Shifter Base Kit with WCD 3rd Stage
3 CIM Ball Shifter WCD 3rd Stage Kit (#35 Chain)
 
3 CIM Ball Shifter WCD 3rd Stage Kit
3 CIM Ball Shifter 3rd Stage Kit
Long Shifter Shaft 2.16 Ratio Spread Kit
Long Shifter Shaft 2.65 Ratio Spread Kit
Long Shifter Shaft 3.68 Ratio Spread Kit
Short Shifter Shaft 2.16 Ratio Spread Kit
Short Shifter Shaft 2.65 Ratio Spread Kit
Short Shifter Shaft 3.68 Ratio Spread Kit
Downloads & Docs Assembly Instructions:
217-3195 (3 CIM Ball Shifter Base Kit) (PDF)
217-3268 (3 CIM Ball Shifter with 3rd Stage) (PDF)
217-3269 (3 CIM Ball Shifter with WCD 3rd Stage) (PDF)

Other:
Recommended Grayhill Encoder Spec Sheet (not included)
How to Use VEXpro Components with the FRC Kit of Parts Drive System (PDF)
Outputs 1/2" Hex
Specification VEXpro Gears Require Lubrication. We recommend white lithium grease.
Material Type Gears: 7075 T6 Aluminum with teflon infused ceramic coating
CIM Input Gear: 4140 Steel
Shafts: 7075 T6 Aluminum 
Shifter Housing: Glass-filled Nylon
CAD Model 217-3195 (3 CIM Ball Shifter 2 Stage) (STEP)
217-3268 (3 CIM Ball Shifter Base Kit with 3rd Stage) (STEP)
217-3269 (3 CIM Ball Shifter Base Kit with WCD 3rd Stage) (STEP)
217-3250 (3 CIM Ball Shifter Housing Kit) (STEP)
217-3287 (Short Shifter Shaft 2.16 Ratio Spread) (STEP)
217-3288 (Short Shifter Shaft 2.65 Ratio Spread) (STEP)
217-3289 (Short Shifter Shaft 3.68 Ratio Spread) (STEP)
217-3290 (Long Shifter Shaft 2.16 Ratio Spread) (STEP)
217-3291 (Long Shifter Shaft 2.65 Ratio Spread) (STEP)
217-3292 (Long Shifter Shaft 3.68 Ratio Spread) (STEP)
Drawing 217-3195 (3 CIM Ball Shifter) (PDF)
217-3268 (3 CIM Ball Shifter with 3rd Stage) (PDF)
217-3269 (3 CIM Ball Shifter with WCD 3rd Stage) (PDF)
217-3250 (3 CIM Ball Shifter Housing Kit) (PDF)
Short Shifter Shafts with Gears (PDF)
Long Shifter Shafts with Gears (PDF)
3rd Stage Output Shaft (PDF)
Ball Shifter Mechanism (PDF)

Weight Base Kits:
217-3195 (3 CIM Ball Shifter Gearbox): 2.21 lb
217-3268 (3 CIM Ball Shifter + 3rd Stage): 2.66 lb
217-3269 (3 CIM Ball Shifter + WCD 3rd Stage): 2.75 lb
217-3267 (3 CIM Ball Shifter Hardware Kit): 0.23 lb
217-3250 (3 CIM Ball Shifter Housing Kit): 0.59 lb

Pneumatics:
217-2778 (Pancake Pneumatic Cylinder, 3/4" Bore, 1/2" Travel): 0.138 lb

Spread Kits:
217-3270 (Short Shifter Shaft 2.16 Ratio Spread Kit): 0.559 lb
217-3278 (Short Shifter Shaft 2.65 Ratio Spread Kit): 0.574 lb
217-3279 (Short Shifter Shaft 3.68 Ratio Spread Kit): 0.607 lb
217-3280 (Long Shifter Shaft 2.16 Ratio Spread Kit): 0.579 lb
217-3281 (Long Shifter Shaft 2.65 Ratio Spread Kit): 0.590 lb
217-3282 (Long Shifter Shaft 3.68 Ratio Spread Kit): 0.623 lb

3rd Stage Gear Kits:
217-3286 (3rd Stage 50:34 Gear Kit): 0.268 lb
217-3285 (3rd Stage 54:30 Gear Kit): 0.279 lb
217-3284 (3rd Stage 60:24 Gear Kit): 0.308 lb
217-2617 (3rd Stage 64:20 Gear Kit): 0.331 lb

Optional Sprockets:
217-2662 (#35 Sprocket w/ Hub - 12t - 1/2" Hex ID): 0.04 lb
217-2660 (#35 Sprocket w/ Hub - 15t - 1/2" Hex ID): 0.057 lb
217-2642 (#25 Sprocket w/ Hub - 16t - 1/2" Hex ID): 0.03 lb
217-3488 (#25 Sprocket w/ Hub - 18t - 1/2" Hex ID): 0.04 lb
217-2640 (#25 Sprocket w/ Hub - 22t - 1/2" Hex ID): 0.045 lb