RE: Model Aircraft Starting Bench (GSWAM Style)
Some info on the design rationale.
The rear cross member, PN 7, was flat to get the brace for PN 6 as far to the rear as possible, The logic was to preventPN 6 from pulling loose at the front in the event someone sat on the bench. Sagging has not been a problem.
Some of the benches were built with the front cross member in a flat position. Some people said that may be unsafe because of the possibility of getting hurt by the prop while reaching under it to get to items onthe "shelf."
Rear aircraft restraints were not recommended due tosome ARF's not having a strong enough stab to hold the planeduring a full throttle engine run. We found that one P-47 manufacturer actually builds their stabs with the grain running parallel to the fuselage.