>>1780955>uv light and water exposureit's butyl, isn't that pretty stable? people make bags and belts out of old inners. I could probably negate those factors by covering the meeting point between the frame and seatpost, which I was gonna do anyway to weather-and-grime-proof it
But speaking from a stress perspective, would having a softer (likely somewhat compressible) material as a seatpost shim kill my frame or post? I've seen a Felt TT bike use a rubber shim for extra compliance, but that was an rounded rectangle or teardrop or kamm tail cross section, not a tube <img class="xae" data-xae width="32" height="26" src="
https://s.4cdn.org/image/emotes/4459d60b_PepoG.png">; <img class="xae" data-xae width="28" height="25" src="
https://s.4cdn.org/image/emotes/25086889_FeelsSpecialMan.png">;
