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Old 01-14-22 | 11:46 AM
  #48  
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ThermionicScott
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Bikes: 1991 Bianchi Eros, 1964 Armstrong, 1988 Diamondback Ascent, 1988 Bianchi Premio, 1987 Bianchi Sport SX, 1980s Raleigh mixte (hers), All-City Space Horse (hers)

Originally Posted by Chombi1
Safest approach, based on what most structural designers are typically comfortable with, is 1/3 of the load bearing structural member to be anchored to structure and 2/3 cantilevered, max..... but it looks likeseatpost designers did not really follow this rule.....
I'm not a physical engineer of any kind so bear with me, but is that rule of thumb for the integrity of the cantilevered member, or what it's mounted into? Seems like seatposts are generally pretty strong, and it's the frame that we're usually concerned about.
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