Swing Arm

Step 1: "Arm"

To begin creating the arm, attach a 36T Gear to a 2x14 Beam using 4 1x1 connector pins.

You can also use a different size gear as long as the connector pins are able to attach to the gear and the beam. By doing this, we are connecting the turning motion of the gear to the larger beam. 

Step 2: "Tower"

Attach a 4.5 Pitch T-Shaft to a 2x16 Beam

Notice, we are using a T-shaft here which makes it easier to connect to the motor in a later step. 

Step 3

Attach the "arm" from step 1 to the "tower" from step 2 onto the long shaft side. The small end of the T-Shaft should still be accesssible on the other side of the "tower."

Secure the arm in place with a rubber shaft collar.

Add 1.5 Pitch Standoffs to the "tower" portion at holes 3 and 11 from the bottom.

Step 4: "Contact Points"

Attach a 2x16 beam to the main tower structure securing the shaft in place. 

❗ This step is important because it gives the axle two places to connect and stay steady. When the axle has support on both sides, it’s much stronger and less likely to bend or wobble. This helps the arm lift and carry heavier things without breaking or getting loose. It’s kind of like holding a pencil with two hands instead of one—it won’t bend as easily! 

Step 5

Attach 8 1x1 connector pins to the VEX IQ Smart Motor. 

Attach the motor to the "tower." Pay careful attention to the orientation of the motor. The square hole should fit over the T-Shaft's axle.