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  • REV DUO
  • Structure
    • Introduction to Structure
      • 15mm Extrusion
      • 15mm x 30mm Extrusion
      • 15mm x 45mm C Channel
      • 45mm x 45mm U Channel
      • Flat Plate
      • Flat Beam
      • L Beam
    • Brackets
    • Corrugated Plastic Sheets
    • M3 Hardware
  • Motion
    • Introduction to Motion
      • Hex Shaft and Spacers
      • Bearings
    • Sprockets and Chain
      • Advanced Sprockets and Chain
      • Chain Tool
    • Timing Belts and Pulleys
    • Gears
      • Advanced Gears
    • Wheels
    • Linear Motion
    • Choosing an Actuator
    • Motors
      • HD Hex Motor
        • Pinion Pressing Guide
        • Pinion Removal Guide
      • Core Hex Motor
    • Servos
      • Smart Robot Servo
  • Building Techniques
    • Tips and Tricks for Building
    • Supporting Motion
    • Constraining Motion
    • Compatibility
  • Build Guides
  • Linear Motion Kit
    • Three Stage Cascading Lift
    • Three Stage Continuous Lift
  • Channel Drivetrain
    • Single Sprocket Shaft Assembly
    • Double Sprocket Shaft Assembly
    • Drive Shaft Assembly
    • UltraPlanetary Gearbox Assembly
    • Making the Chain Links
    • Drive Rail Assembly
    • Final Assembly
  • Channel Drivetrain - Mecanum Upgrade
    • 90mm Single Sprocket Shaft Assembly
    • 75mm Single Sprocket Shaft Assembly
    • Drive Shaft Assembly
    • UltraPlanetary Gearbox Assembly
    • Making the Chain Links
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behaviour
  • Mecanum Drivetrain V2
    • UltraPlanetary Gearbox Assembly
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behavior
    • Mecanum Drivetrain Example Code
  • Mecanum Drivetrain Kit
    • UltraPlanetary Gearbox Assembly
    • Drive Rail Assembly
    • Final Assembly
    • Mecanum Wheel Setup and Behavior
    • Mecanum Drivetrain Example Code
  • Extrusion Chain Drivetrain
    • Pre-Loading Brackets
    • Traction Wheel Assembly
    • Omni Wheel Assembly
    • UltraPlanetary Gearbox Assembly
    • Internal Chassis Frame Assembly
    • Making the Chain Links
    • Final Assembly
  • Extrusion Gear Drivetrain
    • Pre-Loading Brackets
    • Omni Wheel Assembly
    • Middle Grip Wheel Assembly
    • Front Grip Wheel Assembly
    • Gear Idler Assembly
    • UltraPlanetary Gearbox Assembly
    • Internal Chassis Frame Assembly
    • Final Assembly
  • Class Bot V2
    • Pre-Loading Brackets
    • Internal Robot Frame Assembly
    • External Robot Frame Assembly
    • Wheel Assemblies
    • Arm Gear Assemblies
    • Arm Assemblies
    • Final Assembly
  • Class Bot
    • Pre-Loading Brackets
    • Internal Robot Frame Assembly
    • External Robot Frame Assembly
    • Wheel Assemblies
    • Arm Gear Assemblies
    • Arm Assemblies
    • Final Assembly
  • Electronics and Communication
    • REV Control System
    • Sensors
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  • Pulley Assembly Parts Required
  • Pulley Assembly Steps
  • Drive Rail Parts Required
  • Drive Rail Assembly Steps

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  1. Mecanum Drivetrain Kit

Drive Rail Assembly

Pulley Assembly Parts Required

PART NUMBER

DESCRIPTION

QTY.

24 TOOTH GT2 3MM PITCH PULLEY

4

Pulley Assembly Steps

Take the two ends of the 24 Tooth GT2 3mm Pitch Pulley and fit them together.

Note: The pulley ends should be flush with each other.

Lock the pulley ends together using three of the screws that came with the pulleys.

PULLEY ASSEMBLY COMPELTE

Repeat this step until you have four completed Pulley Assemblies.

Drive Rail Parts Required

PART NUMBER

DESCRIPTION

QTY.

45MM X 15MM C CHANNEL - 408MM

2

U CHANNEL ENDCAP

2

5MM HEX BEARING BLOCK

4

M3 X 8MM HEX CAP SCREWS

36

M3 NYLOC NUTS

8

5MM X 75MM HEX SHAFT

1

5MM X 90MM HEX SHAFT

2

3MM SPACER

6

SHAFT COLLAR

3

THROUGH BORE BEARING - SHORT

3

120 TOOTH GT2 3MM PITCH BELT

1

ASSEMBILIES

ULTRAPLANETARY ASSEMBLY

2

PULLEY ASSEMBLY

2

Drive Rail Assembly Steps

Attach an UltraPlanetary Assembly to a 45mm x 15mm C Channel - 408mm. Place M3 Screws and M3 Lock Nuts in the correct locations. Tighten until nuts are snug.

Note: The Output Cartridge of the UltraPlanetary Gearbox lines up with the fourth large (9mm) hole from the end of the C Channel.

Attach an UltraPlanetary Assembly to a 45mm x 15mm C Channel - 408mm. Place M3 Screws and M3 Lock Nuts in the correct locations. Tighten until nuts are snug.

Note: The Output Cartridge of the UltraPlanetary Gearbox lines up with the thirteenth large (9mm) hole from the end of the Channel.

Attach a Hex Bearing Block to a 45mm x 15mm C Channel - 408mm using M3 x 8mm Screws. Tighten until screws are snug.

Note: The Hex Bearing Block lines up with the Forth large (9mm) hole from the end of the Channel.

Attach a U Channel End Cap to the Motor end of the C Channel. Add three Hex Cap Screws to hold it in place. Tighten the Hex Cap Screws.

Attach a U Channel End Cap to the other end of the C Channel. Add three Hex Cap Screws to hold it in place. Tighten the Hex Cap Screws.

In the following section 5mm Hex Shafts will be placed on the Drive Rail. This is be doing to get correct spacing on the Shafts. However the Shafts will not be be secure until the end of the assembly and may come loose during the building process.

Add a 75mm Hex Shaft to the second motor on the Drive Rail.

Add a 90mm Hex Shafts to the first motor and the Hex Bearing Block

Add three 3mm Spacers the 75mm Hex Shaft that is on the second motor.

Add two 24 Tooth GT2 3mm Pitch Pulleys to the shaft on the second motor and the Hex Bearing Block Shaft.

Add Shaft Collars to all three Hex Shafts. Do not tighten any of the shaft collars.

Note: At this point nothing has been added to put space between the first motor and the Shaft Collar. This Shaft Collar can be adjusted after the second C Channel is placed. In general it is better to situate the shaft collar away from the motor to make adjustments easier.

Add Through Bore Bearings - Short to all three Hex Shafts.

Note: the smaller portion of the bearing faces away from the Shaft Collar.

Add 3mm Spacers to all three Hex Shafts.

Slide the 120 Tooth GT2 3mm Pitch Belt onto the Pulleys.

Note: The easiest way to add the Belt to the assembly is to remove either the second motor shaft or the Hex Bearing Block Shaft. Hook the Belt over both Pulleys so that the teeth of the Belt are meshed with the Pulley. Then replace the displace shaft to its original position.

Add Hex Bearing Blocks to all three shafts.

Note: The Hex Bearing Blocks will rotate on the shafts. This is fine but for the next step they need to be oriented as shown in the image.

Add a Channel – 408mm to close out the Drive Rail.

Note: Make sure the Bearing Blocks are square and the Channel End Cap holes line up.

Take eighteen 8mm Hex Cap Screws and secure the 45mm X 15mm C Channel – 408mm to the rest of the assembly. Screw into the End Caps and the Bearing Blocks to keep everything in place.

DRIVE RAIL ASSEMBLY COMPLETE

Adjust Shaft Collars and tighten set screws.

Repeat these steps until you have two Drive Rail Assemblies.

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Last updated 3 years ago

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ASSEMBLY 1
ASSEMBLY 2-1