Originally Posted by
UT_Dude
Most TT's don't have 8% grades -- you want to pedal both ways. Yes, you go harder up a hill, but you should be pushing something down the hill. If you're aiming for a 320W TT, go 330 up and 310 down. Something like that.
I concur, but from the description - spinning out at 40 MPH - I assumed a grade.
And if you're aiming for a 320 W TT, I think the numbers should have a much greater discrepancy between the uphill and the downhill, assuming the downhill is such that you can spin it out.