You can read Part I of this blog here.
The base for the skateboard dolly is two sheets of 12mm plywood bolted together. You need something to hold the tripod in place - I've used furniture coasters.
I reversed the direction of the wheel bolts for better spin. The wheel trucks have to be positioned accurately so they keep the rails parallel. For this step you will need : one Doctor Who Series Three box set and one Woody Allen box set.Welcome to the future of high-tech filmmaking.
First test run footage:
OK. Runs smoothly except for wobbles where the pipes join - at the moment I only have very loose joining plugs for them (next on the to do list.) The wheels are completely silent, track is self straightening and there's no lateral roll.