Wiki

Tools

Sort tools in order of importance…
Add pictures?

  • wrenches 1/4, 11/32
  • screwdrivers hex (5/64,3/32), star (T?)
  • pliers, needlenose pliers, diagonal cutters, etc…
  • tabletop grinder
  • dremel

Custom Tools:

Tips:

Don’t strip screw heads - sharpen Hex screwdrivers regularly!

Safety considerations:

Wear goggles!!!

Color coding screwdrivres and wrenches:
vex_tool_set1

Special tools

Insert puller:

insert_puller

Drilling template:

drilling_template_1

drilling_template_2

Bearing cutting template:

bearing_template_1

bearing_template_2

5 Likes

Alternative part sources

https://www.robosource.net

VEX Cost Reductions
Vex Low Cost Identical Legal Parts Compilation
Cheaper Option for Nylon Washers

Cheap Alternative Tiles

3 Likes

Reserved for all Omni tank drive

1 Like

Reserved for X-Drive wiki entry

1 Like

Reserved for H-Drive wiki entry

https://en.m.wikipedia.org/wiki/H-drive

1 Like

Reserved for Mecanum wheels drivetrain wiki entry

Code examples:

A Holonomic drive is free to move in any direction without having to rotate around its axis.

https://en.wikipedia.org/wiki/Holonomic_(robotics)

One form consists of 3 or 4 omniwheels mounted at angles to each other. It is good for lateral movement, and increases speed and power of turns. However, linear drive speed and power are decreased since some or all of the powered wheels run at angles to the bot’s motion. All wheels must be omni wheels in order for this drive to function. The 4-wheel version is referred to as " X-Drive".

Another omniwheel Holonomic drive is the “H-Drive”, where 1 omniwheel is placed at right angles to the other four conventionally mounted omniwheels.

Mecanum drive is holonomic drive where four mechanum wheels are placed in a tank drive format. The wheels should look like this when looking from top:
image
Like all holonomic drives, mechanum bots can strafe, and does so with a simple rectangular base. However, mechanum wheels have rollers that slip, reducing traction and pushing power.

3 Likes

Reserved for additional drivetrain discussion entry

Kiwi:

Lynfield:

Swerve:

1 Like

Reserved for additional drivetrain discussion entry

Are tracked vehicles viable in Vex?

3 Likes

Reserved for additional drivetrain discussion entry 1

Reserved for additional drivetrain discussion entry 2

Reserved for additional drivetrain discussion entry 3

Reserved for comparison of the VEX wheel types

Conversion of the robot weight into tractive force:

https://sites.google.com/site/dkellytest1/drive-systems/comparison-of-wheels

3 Likes

Reserved for discussion of the Claw (intake)

1 Like

Reserved for Side Rollers wiki entry

1 Like

Reserved for Passive Intakes wiki entry

Google Photos

1 Like

Reserved for Top Roller intake wiki entry

2 Likes

Reserved for the (ball) indexer discussion

Mini Reveal- Single Motor Feeder and Indexer

Indexer vs Extra Flywheel Motor

https://youtu.be/MqD8EmWweB8

1 Like

Reserved for Flywheel discussion wiki entry

Single flywheel:

Dual flywheel:

7842F 2018-19 Robot Showcase - Flywheel Control, Odometry, Engineering Journals & More

PID Theory Question

Additional links: Physics of the Flywheel Launcher

Advanced topic: adjustable hood…

2 Likes

Reserved for (ball) Puncher wiki entry

See also: slip gears
Advanced topic: adjustable angle punchers

1 Like

Reserved for Catapult launcher wiki entry

8059A and D : SingVex (Reveal)
8059D Catapult Hybrid: Singapore VEX 2016 Edition (Reveal)
2-Ball Catapult vs 1-Ball Flywheel

2 Likes