Thames & Kosmos ReBotz Halfpipe: Build a Motorized Skateboard Robot

The Thames & Kosmos ReBotz Halfpipe is a build-it-yourself motorized robot kit that turns a pile of junkyard-inspired parts into a skateboarding robot. It uses an electric motor to drive wheels and cams, making an umbrella and broom swing to push the robot forward. This kit is one of four in the ReBotz series, and all parts are interchangeable across sets so you can invent your own robots. Halfpipe is a hands-on way to learn about cams, springs, levers, and motors.

How Does Halfpipe Move?

A battery-powered electric motor spins cams and levers attached to the robot's frame. These parts convert the motor's rotation into the back-and-forth motion of the umbrella and broom, which push against the ground to propel Halfpipe forward on its skateboard base. The design demonstrates how wheels, cams, and motors work together in a simple machine.

What Can You Learn from Building Halfpipe?

This kit helps you understand mechanical principles through play. As you assemble Halfpipe, you'll see how cams create periodic motion, how springs store and release energy, and how levers amplify force. You can experiment by adjusting the cam position or swapping parts to change how the robot moves. The instructions guide you through the mechanism, but the real learning comes from tinkering.

Can You Combine Parts with Other ReBotz Kits?

Yes. All four ReBotz sets use the same connectors and motor units, so you can mix and match parts like arms, wheels, and accessories. For example, you could attach Halfpipe's skateboard base to another robot's body. This encourages creativity and lets you build unique creations that look like they are made from recycled parts. Collect all four kits to expand your possibilities.

Quick Facts

Common Questions from Buyers

Is Halfpipe difficult to assemble?

The product notes say it is “fast and easy to build” with only a few clicks. No additional tools are required, and instructions are included.

What type of batteries does it use?

The safety information warns against mixing old and new batteries or different types (alkaline, standard, rechargeable). Specific battery requirements are not listed in the description, so refer to the instruction manual for details.

Can I use parts from Halfpipe with other kits?

Yes. All ReBotz kits are designed with interchangeable parts. You can swap components between sets to create new robotic creations.