Re: Optimal temperature for a Time Trial

big D said:

Your statement is absolutely correct and quite insightful. Air density
is, indeed, inversely proportional to temperature. In other words, on a
hot day, air around you will be less dense, hence offer less
resistance.

I don't know where you live, but I live in Texas. I suggest that, if at
all possible, you come down here for your time trial in July or August
when it's 100+ F (95 at least) and you should be really happy with the
results. Or, better yet, do it in Arizona where it's even hotter (might
get lucky and get to do it when it's 115 F) and dry (Texas humidity
might add to the air resistance.)

No, water vapor (molecular weight 18) reduces the density of the air
(average molecular weight about 29) and therefore creates less air
resistance than you would have with completely dry air. This assumes
you don't have condensation (fog).

Quoted message said:

Oh, my, I almost forgot about Death
Valley! Do they do time trials there?

The relatively low elevation in much of that area would not be
favorable for reduced air resistance.

Quoted message said:

Best o'luck!

Of course physiological factors may result in your power output
not being at its peak on particularly hot and humid days.