Dear all, I Hope we got the correct mail: HPV Germany e. V. agree to the
changes concerning speed records and here 200m.
Best Heike
----- Ursprüngliche Nachricht -----
Von: "Theo Schmidt" <whpva@xxxxxxxxxxxxx>
Gesendet: 16.09.2017 20:09
An: "whpva@xxxxxxxxxxxxx" <whpva@xxxxxxxxxxxxx>
Betreff: [whpva] Discussion draft proposal rule 3.3.1, progress and newest
version
Dear all,
The discussion on some HPV mailing lists and in the RC
has been very fruitful. Main concerns were simplifications and clarity,
so I now suggest the version below. Mainly the complicated compensation
formula was dropped from the Appendix, because it cannot be at the same
time useful and always correct.
Several people are concerned that the new rule would greatly restrict
the possible courses. Actually the opposite is the case, even without
tolerances and compensations. As an example, there are many roads
following bodies of water. Lakes and Lochs are of constant elevation,
and large rivers typically fall only in the parts-per-thousand range.
And there are previous flat marschlands also with roads and runways.
Now the roads alongside or on these do go up and down, giving a wavy
elevation profile. The thing to do is then to put the 200m timing
section on a locally high bit and make sure the run-up doesn't have even
higher bits, and try to find a point as high as "legally" possible for
the start of the run-up, and at the right distance. See the attached
drawing.
I am not asking for a vote yet, because an article will appear in a week
or so in the Netherlands, which may raise some further questions.
Best,
Theo, Future Bike Switzerland
---------------
Rule 3.3.1:
...
<new part>
Course Flatness and Straightness: Except for the road race events, and
time trial events one hour and over involving multiple laps, all courses
must be sufficiently flat to give no speed advantage compared to the
otherwise same situation on a hypothetical course with constant
elevation. This is the case when all points of a timed course or section
have an elevation which is equal to or higher than that of its start,
and for events with flying starts, all points of the run-up section have
an elevation which is equal to or lower than that of its finish, which
is also the start of the timed section. See Appendix C for explanations.
</new part>
...
<new>
Appendix C
WHPVA Land Vehicle Environmental Explanations
Gravity:
Rule 3.3.1 implies that the potential energy of a vehicle and rider(s)
(total weight x elevation) at the start of a course may vary along the
course but not be of a lower value at the finish. Timed sections may
contain a positive variation of potential energy (hills) and run-up
sections may contain negative variations (valleys), of any magnitude,
but not vice-versa. This is because such variations represent no
advantage compared to a perfect course of equal elevation. See the WHPVA
website for more information.
Determining Elevations:
The relative elevations of the starts and finishes of course sections
should be determined as accurately as possible, the error given and
applied in the disadvantageous direction. Except when it is clear to all
observers, for instance by sighting along short straight-line courses,
and affirmed by them that there are no valleys in timed sections or
hills in run-up sections, an elevation profile should be drawn in order
to show that the required conditions are met, again with measurement
errors given and applied in the disadvantageous direction. The
resolution and accuracy of the profile need not be greater than
necessary to show the fulfilment of the requirements.
</new>
[Die ursprüngliche Nachricht wird nicht vollständig eingefügt.]
