Originally Posted by
FBinNY
Anything is possible, and without being there, it's impossible to do a thorough analysis. But rough use as a cause isn't consistent with your original post, where in the 2nd paragraph you clearly describe a radical pressure drop simply from mounting and inflating the tire. (ie. without riding).
IMO- it's equally likely that you're somehow misreading the tension gauge, but that too is only a possibility.
My suggestion is to build the wheel, mount the tire, then measure tension before and after inflation, so air pressure is the ONLY variable. You might bring the wheel to a knowledgeable builder and demonstrate the same issue in front of him, and solicit his opinion.
Sorry if I wasn't clear, thought you were in the original thread.
I had someone else build the wheels for me and I was losing tension every couple rides. He told me it was normal in the first few rides (which I later found out was false) but when it kept happening he said I should raise the tension. So I raised the tension and couldn't get rid of a vertical hop I created so I rebuilt from scratch.
Now my tension is going way down when the tire is mounted. My latest post was referring to whether I was losing tension to begin with because of hitting something hard rather than a poor wheel build.
Another variable--after letting the tire sit mounted/inflated overnight, tension comes back up a bit (bead stretching?)