Hi, Ron's sidecar in the photos is a good medium but if you want to learn more you can view mine, I give you two youtube links, my sidecar in the video corresponds exactly to the one in the photos and is an original swallow entirely in iron and wood!
https://www.youtube.com/watch?v=AHzlHcM-Uo8&t=27s https://www.youtube.com/watch?v=uPVY1sI9mKA