Originally Posted by
genejockey
This is what happens when you make a silly, absolutist assertion which is obviously nonsensical and then find yourself trying to defend it with irrelevant horsehockey. Note that the instructions you just quoted refute your argument that seatpost designers would need to know the specs of EVERY frame, since the frame manufacturer could list THEIR requirements in the instructions, as they have here. The idea that seatpost designers don't concern themselves with not causing the frame to fail is just ridiculous.
I never stated the seat post manufacturers don't concern themselves with frame failure. I stated that the minimum insertion mark on a seat post is to avoid seat post failure, not frame failure. As in my previous example, the marking on a seat post may not fulfill the frame insertion requirement.
I'm done.