Join Date: May 2004
Location: Southern California
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Originally Posted by HillRider
I believe carbon seatposts are plenty strong enough to be used as clamping points for your workstand. They take more stress from your weight while riding than from the bike's weight.
That said, unless your seatpost is a non-round design, why not buy a cheap metal seatpost and dedicate it to workstand use?
+1 on a round carbon seat post. I clamp onto mine without any problems. Realize you need not clamp with gorilla like strength. The jaws on padded with rubber and the coefficient of friction is pretty good between the two surfaces.
I never clamp on the any part of the frame, whether carbon or aluminum. The ratio of wall thickness to diameter of a frame member (say seat tube) is rather small. The ratio of wall thickness to diameter of a seat post is much greater. I cannot quantify this, but seems like the latter would be harder to crush.
Also, I agree with the OP, that clamping at the center of gravity would be best. However, realize the frame is designed to hold the rider's weight plus dynamic loading, I can easily convince myself the forces in the frame members due to the static weight of the frame on a stand is rather small in comparison.
BTW to the OP - you're never a "former engineer". You're always an engineer, perhaps just retired and having fun! I am a "current engineer" and having a little less fun.