I picked up a used Thomson seatpost. After getting it home I noticed
that there are some deformations in the shaft. About 5-6 inches down
from the top, there are a series of 'compression rings'???? along one
side, with the slightest echoing of these compression rings on the
opposite side.
This is at the sides of the post, not to the front or back of the post
when installed.
These can be seen, but just barely. Running a finger down the post
makes the ridges/depressions very obvious. The deepest compression
area is less than .5mm or so, .020 or less. Above this deepest one,
which is the topmost one, it looks like the metal bulges out just a
bit.
When I run a straightedge up the *inside* of the post, I can't feel
*any* bumps along any wall.
My guess is that the deformations were caused by a seatpost clamp.
Other than this, the post is straight and in decent shape.
Does this sound unsafe? I will be using on roads, and even there I am
a 'soft' rider, although not light- 180 lbs. or so. Thanks.