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I agree. Do you mean does anyone make empirical measurements of geo and
compare to those stated by the manufacturer? I doubt it. I think making those
empirical measurements on a built up bike especially but also a frame, as a 3d
object, are prone to too much error given the mm accuracy of those values from
the manufacturer. I saw a pic on another site indicating a HTA meaurement
using a phone resting on a fork stanchion. I think that's a superficially
reasonable thing to do for one's own purposes (as are any frame measurements),
but to indicate these as some sort of resource for public consumption there
should be more rigour. In the case of the HTA measurement, was the bike
sitting on level ground? Was it even flat ground? It could easily be 1 degree
from horizontal, and I'd say 1 degree is a significant error on a stated HTA.
I might be fairly lonely being concerned about such things though…
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