Thomson Elite Seatpost Failure —

See other failures under 000.html.

Thomson Seatpost head failed. From http://khabarbike.vox.com/library/post/my-thomson-elite-seatpost-got-broke.html, http://cozybeehive.blogspot.com/2009/03/thomson-elite-seatpost-failure.html and as of 2010/03.

     

Rider was not on the bicycle and was not injured. The bicycle was leaned on a wall and fell over, when picked up the clamp/head was broken.

Post about four years old when it broke (early 2009); rider weight, installation procedure, and usage not stated.

A representative of Thomson says the head is overdesigned compared to the tube, so the tube will bend before the head bends or breaks. As a result, "ear" failures are a bending rather than fracture unless the clamp bolts are too tight. Deep insertion — that is, placing the seat very low — may prevent the tube from bending first.

See also FAIL-137.html