Originally Posted by
PimpMan
Every seat post regardless of diameter has marking min insertion point showing how far out of the frame it can go as long as min insertion point is inside frame its within spec seat post was designed for, even if raise 300mm. Or whats then the reason they have this markings?
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The purpose of the minimum insertion mark is mainly to safeguard the integrity of the FRAME.
Too little insertion and the post will lever itself out of the seat tube, or simply breaking the top of the seat tube off.
How much exposed seat post to use becomes a multi-dependent judgement call based on quality of post, rider weight and type of riding.
Unless the manufacturer has published any recommendations.