Bike Forums - View Single Post - More set-back needed than posts provide

12-02-14 | 03:16 PM

#36

FBinNY

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Joined: Apr 2009

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From: New Rochelle, NY

Bikes: too many bikes from 1967 10s (5x2)Frejus to a Sumitomo Ti/Chorus aluminum 10s (10x2), plus one non-susp mtn bike I use as my commuter

Quote:

Originally Posted by FarHorizon

.....

So, my conclusion is that I don't want to exceed the design parameters of ANY of my equipment. The Thompson post is well made, conservatively designed, and has a sufficient safety margin for any seat I might want to mount.

The most positive thing about a Thomson post for your purposes is that's it's pretty well engineered to "fail safe", or more specifically bend when overloaded rather than break. So go ahead and stay with the Thomson, and monitor the lowest exposed area for any hint that it's beginning to bend. Note that it can and will hold up to and after an initial bend of a few degrees, but once it starts bending the clock is ticking fast to total failure.

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