Hi Brad. Bought your plans to learn how to do the back wheel everything else was design build. The bar in the middle is a back brake, the only brake. I have actually taken these two pictures and put them on a couple of shirts.
My chop is built for 6'5" and took about 5 weeks. The little red one is my daughter's. It took two days, had to let paint dry (she just turned 2). I built another one, my first it took a week and used four mountain bikes to make one 9.5ft chopper with 5.5ft forks. It had a 1X6 for a seat and I nicknamed it Frankenstein.
Way Cool stuff. ~Steve, Camarillo CA