6. Top Arm Assembly

FBX Robot Curriculum, Module No. 1

For this step, you will need the following parts:

First, put the Spacer (FBX-20) onto the Arm Center Shaft (FBX-7).

Next, slide the top Arm C-Channel (FBX-8) onto the arm center shaft, flat side up.

Then, insert the second Spacer onto the arm center shaft, so that the top Arm C-Channel is "sandwiched" between the two spacers, with the arm center shaft running through all 3 parts.

Now, insert this entire assembly into the top collar on the left column (on the chassis) as shown here:

For this step, you will need the following parts:

Since we already used the Left Side Column (FBX-2L), for this step, we need the Right Side Column (FBX-2R).

Insert the right end of the Arm Center Shaft (from the previous step) into the top collar on the Right Side Column (FBX-2R).

Then, secure the Right Side Column to the chassis using two M3x12mm Allen Screws (FBX-24), as shown here:

For this step, you will need the following parts:

First, place the Column Bracing (FBX-18) on top of the two side columns on the chassis, so that the wider side is on top. Next, fasten the bracing to the tops of the two side columns using four M3x6mm Allen Screws (FBX-21). It can help to install the left column screws first, and then the right column screws by pulling the left and right columns together.