Boondocker,
The blades look great, and a nice carving set-up as well. I also recall your earlier project with the rather high-tech test set-up, but I hadn't connected it to you. Is the first turbine still up and working?
Oh, and a question...I think you settled on a gap of ~.700-.800", but how thick is the stator? I was just curious what you're mechanical clearance ended up.
Regarding Upsatesman's question on measuring speed - an oscilloscope is probably a nice tool if you have one, but not at all necessary to estimate alternator speed. It can be measured with an inexpensive handheld rpm gage, or calculated from frequency measurements:
rpm = freq (hz) x 60 / (# poles/2)
best, ~ks