re: DIY pulley system for rack

I tried to build the same thing and ended up not liking it. Just some suggestions though, I would use a nylon strap to attach the pulley to the power rack so it doesn’t scratch your pull up bar. Also those pulleys are made for rope and have little spurs to grip rope so it doesn’t slip. Those will eventually rip the plastic on your cable. They sell pulleys at HD with ball bearings that are a little smoother. They’re with the garage door parts.