Hello Group,
I just ordered a set of plans and had a question.
In the "FAQ" section on the main web page it states:

"A lighter frame can be achieved if thinner chromoly main frame tube
and an aluminum seat frame are employed. You will find that a
homebuilt frame can be made as light as commercial recumbents costing
thousands of dollars more."

How thin can one go and still retain sufficient strength and stifness?
Has anyone gone with a thinner main frame?
Thanks,
Carl