I'd like to know the same thing: how accurate of an estimate is the power calc spreadsheet compared to a Powertap? If you could perhaps post the powertap figure you hold and what your combined weight (bike & rider) is, what mag setting and speed your holding on the e-motion roller I can figure out what the calculator predicts. I'm looking for something in the mid 100's power range and something in the low to mid 300's power range (on the PowerTap) to see how closely the spreadsheet estimates.
Thanks for taking the time to check that out for me/us! It's great to know I can estimate reasonably close what kind of powers I'm holding when doing intervals.
My e-motion just arrived yesterday-I'm pretty excited (though I'm riding outdoors today). I was borrowing a friend's for the last month so I have had a chance to ride one and know what it is like (hence the reason I bought my own-despite the price tag).