I asked about Ti spindles. I think there was confusion, because I was told the Ti spindles lacked wrench flats and required a hex wrench be inserted where the electronics are, but my X/1s have wrench flats, so I need to check on this. Maybe he was referring to nanogram spindles.
They claim Q1 2010. Engineers tend to forecast the time it will take to solve known issues, but tend to overlook the time it will take to solve unforeseen issues. So maybe a bit later than that. Super-impressive stuff, however.
It's great to have your report, DJ...thanks for posting it. This system looks very promising. I wonder if Richard Byrne won't try to buy Metrigear.
I just checked my 2007 Speedplay X1 pedals, and they too have wrench flats. It's possible that the Ti spindles have a smaller cavity than the stainless ones and that the guy you talked to was just confused about why the cavity on Ti spindles wouldn't work. I sincerely hope this becomes available for Ti-spindled Speedplays. Certainly, the firmware would need to be re-calibrated for the more-flexible Ti axles, but that shouldn't be a big deal. I sincerely hope that Metrigear will retrofit users' pedals. I'd do this in a heartbeat.
On the wattage list, I expressed some concern about how Metrigear was determining crank RPM. I was worried that they were using a once-per-revolution chainstay pickup or something like that. However, now that some details have come out (and we know that the pedals use both strain gages *and* accelerometers), there's an easy way to get constant crank rotation speed. Radial acceleration=(V^2)/R; R is your crank length, and we get acceleration from the accelerometers, so V is easy to determine. You can easily filter out noise from bumps by summing the signals from both pedals. (Bumps would cancel each other out, but radial acceleration would be cumulative). If you have an accelerometer in the pickup, it gets even easier...the radial signal would be: [raw pedal accelerometer signal in radial direction] - [pickup accelerometer signal in vertical direction] = radial acceleration.
While I hope Metrigear is able to deliver on time, I am even more concerned that they deliver on budget. I was really disappointed that the Quarq meter went up in price so quickly. From a business perspective, it was probably the right thing to do (i.e., we're selling as many as we can make; lets adjust the price to match demand). However, it meant that I couldn't afford a Quarq and had to go with a PowerTap. If this becomes real, I'll sell my PowerTap and buy a Metrigear setup!
P.S. There's nothing wrong with PowerTaps...I'm perfectly happy with mine. It's just that I'd like to switch wheels at whim. Also, it would be easier to move pedals from bike to bike than it would be to adapt a PT, Quarq or SRM to the track.