UTCustom Bafang Ultra Boom - Catrike

The UTCustom Boom Alteration Process

Here is our first step of the process to setting up a trike with the Bafang Ultra. We remove the bottom bracket section of the boom, and then mill it to the curvature of the Ultra Cradle with our CNC machine. This makes the process of welding the cradle to the boom easier. It also keeps the interior structural rigidity of the boom intact.

Next, we will grind down the sharp metal burs left over from the mill, along with any other excess materials. This will ensure a clean welding surface. Once prepped, we line up the cradle with the boom and begin to weld the two pieces together. We don't stop there though! We also weld an extra gusset to maximize strength and help support the weight of the Bafang Ultra.