@hozn 73109 wrote:
Yeah, the developer, Doug, is a friend (and coworker) of mine. The science behind the app (using freq to determine tension) is good, but I know that the challenges are in the signal processing — isolating the frequency (so helps to use it in a relatively quiet place). Also factoring in the butting of the spoke when measuring the length can be a little tricky. For straight-gauge naive measurements work, but he was mentioning that on the bitted spokes he has found the effective length for calculations seems to be closer to halfway down the start of the taper (e.g. 2.0->1.8, or 2.0->2.3 in your case) near the nipple (as opposed to right to the nipple) Anyway, I am sure he will be more than happy to help by email if you have any trouble or general questions. Anyway, I do not have an iPhone, so haven’t been able to use it myself. I would like to, since there are aspects of this that would be much nicer than the deflections based tension meter that I use (e.g. keeping track of all my tensions to show me average tension at a glance and show which spokes are deviating the most).
I downloaded the iphone app, will test it out this weekend and post results.
