Talk:Truss rod

"that are more stable and not affected by seasonal climate changes" this is a dubious statement. Rickenbacker guitar necks are made of wood which always changes in response to moisture and temperature and affect the balance of forces between the relief of the neck and truss rods, regardless of what the truss rods are made of or how many of them there are. The reason Rickys are made with two is that it supposedly allows the bass and treble sides to be independently adjusted, it has nothing whatsoever to do with resisting seasonal chagnes, which would only be possible if the neck were made from zero expansion synthetic materials, something you practically never see in guitar manufacture. — Preceding unsigned comment added by 51.241.2.107 (talk) 08:02, 2 November 2021 (UTC)

The Patent
The illustration in the patent is described as being unworkable because it shows a slight downward curvature of the truss rod end towards the heel. This is incorrect. The Gibson rod works by tension in the rod compressing the neck longitudinally and as long as the rod is positioned below the centroid of the neck cross section, i.e. with more wood stiffness above it than below it, the compressive force will result in a backward pull on the head of the guitar as required. Aquin43 (talk) 12:34, 25 August 2023 (UTC)