"Are both wings mounted on a one piece metal shaft? Are they adjustable in flight?"
The back bone of ea wing is a 1/8" x 1 1/4" square tube , tapered in the outer half . A 2 ft 1" x 1" 4130 bar holds them together . Pitch is set before the run .
My wings are to offset low pressure under the nose . They'd need to be scaled up to add meaningful amount of traction . The down force at 100 mph is 1/9th of 300 mph so to add traction they're mostly of use to very fast cars .