Once that's done, I'll get back to work on the Jenny.
I did have a chance to order the 2 inch .063 steel tubes that will be used to make the exhaust system.
My plan is to make an exhaust system like this:
I got the tubing at Woolf Aircraft Products in Romulus, MI. I like to spread word when I find a good source of something. Paul Dougherty at the Golden Age Air Museum told me about Woolf Aircraft. If you need bent tubing, this is the place to shop:
Lastly, John Gaertner's friend Mark found this old Jenny picture. For your viewing pleasure: