Quoted message said:The point is that the USAT drop back rules can cost me time off what I
could do in a true, undisrupted time trial, be it a minute, a second,
whatever. If I have to stop pedalling at my usual efficient and
optimal cadence and level of effort, even for a split second, I have
lost time. If I have to pedal harder than my very efficient and
optimal pace to sprint past another competitor, it will also cost me
time because I won't have as much speed later.
Yes, the USAT drop back rules can "cost you time off what I could do in
a true, undisrupted time trial." This isn't a very strong point.
That you can gain time by disobeying the rules is hardly a surprise in
any sport. The rules in a pure cycling time trial also require you to
drop back if you are passed, causing you to lose time. On an
out-and-back run course on single track, the out runner is required to
yield to the in runner, this can cost the out runner time. In baseball
not corking your bat can cause you to lose distance on your line drive.
In golf using a regulation ball can cause you to lose distance off the
tee.
Quoted message said:It's not that I love drafting, just the ability to race unconstrained
by some set of arbitrary rules that does not exist in any other form
of racing.
Every form of racing has arbitrary rules. Are you thinking only of
cycling? Equipment rules are arbitrary. Performance enhancing drug
rules are arbitrary. Running has arbitrary rules about following the
course, accepting outside assistance (if it is legal to accept a drink
from the course marshal, why not from the spectator, or your training
buddy?)
Quoted message said:In reality, the effects of drafting are often overestimated -- even
the pros in the TDF can't always keep a pack together, much less a
pack of age-group triathletes. Send them through a few turns or
hills, and the packs tend to come apart. There are plenty of ways to
limit the effects of drafting without making it illegal.
First off, the effects of drafting are huge and your example shows it.
If there were little effect of drafting and you were doing 250 Watts in
the draft and lost the pack because of turns, you could do 260 W for a
few minutes and get back on. This doesn't happen. If the pack comes
apart you have to do 340 W to get back, or you get dropped for the day.
Why? Because riding in the draft saves an enormous amount of energy
compared to being in the wind.
On the other hand, in triathlon, if you are riding along at your
constant effort, whatever that is, and someone passes you, you can't
continue your constant effort in their draft. Either you drop back and
continue your constant effort (which is assured in almost all cases
without you taking any action at all) or you get in their draft,
continue your constant effort and ride into them, because of the
advantage of the draft.
Returning to your original point of "USAT drop back rules can cost me
time off what I could do in a true, undisrupted time trial." Not
dropping back can gain you time off what you could do in the same time
trial. You get to take it easy in the draft at a new, faster constant
speed. Why is this better?
--
Ray