To go with the new dipping bars I have now added a chin up bar in the garage. This was a more straightforward project.
First I cut a couple of plywood supports
Drilled a hole for the bar and fixed a few screws
Attached to two roof joists
Fitted bat grips and used a couple of Jubilee clips on the bar to the inside faces of the ply to prevent sideways movement
And then just hung out in the garage for a while
And for those of you wondering what all this has to do with cycling, and more specifically bike v car …
It turns out the dipping bars make a great bike workstand
Cycling Jerzy 
When done properly, those exercises work almost every body part without any equipment at
all. Muscle and bone loss in space create an entire realm of biological concerns for
astronauts,. When you wish to enjoy building endurance and training without having to set oneself via a
lot of pain, a recumbent exercise bicycle might
be what you require to get probably the most out of your workout time.