First Wheel

We already created the wheel subassembly, so now we can place it and constrain it to the drive with an insert constraint. We will use an offset of 0.125" to create a little space between the drive and wheel.

Second Wheel

Later on if we want to change the space between the wheel and the c-channel, it's annoying to change it twice. We will constrain this wheel with two constraints, one to get the wheel concentric with our bearing, and another to keep it flush with our original wheel.

First, use a mate constraint between the wheel and the bearing.

For our second constraint, we will use a flush constraint between both gears.

Now we have a fully constrained wheels!

Contributors to this Article:

• Jess - EZ

First Gear

For the powered gear, we will use a low strength 36t gear. This will be constrained with one insert constraint with an offset of 0.1875".

Second Gear

The second gear will be constrained the same way as the wheel. Two constraints, one mate and one flush.

Contributors to this Article:

• Jess - EZ

When screwing a brace on a chassis, you can spacer box the connection to make it stronger. This isn't always needed, but it will add a little more strength to the base.

Constraining Spacer Box

We already have a spacer box on this chassis. Instead of searching through the library to find the 0.5 and 0.375 spacer, we are going to copy/paste the already used spacer stack.

Contributors to this Article:

• Jess - EZ

In the previous tutorial, we put standoff bracing between the drive channels. Because this drive is the same size, we can copy that assembly and bring it into our new robot.

Standoff Brace

Contributors to this Article:

• Jess - EZ