I tried the logrithmic curve on the Spin 99/DualSky combination and at first thought it was worse as far as rough startup. However I can see if you start it aggressively it will always start in the right direction so it might work better for geared motors. Then I tried the exponential curve. It is the softest start of all but will start in the wrong direction some of the time. However it has by far the best idle and smoothness coming off of idle. I had it running at 200 rpm. Almost as good as my new ceiling fan. I don't know what that curve looks like so I guess I'll have to map it if I get a tachometer working.

Jim O