News and Race Reports for October 13
The Hour Attempt
It looks increasingly likely that Miguel's hour attempt at Bogota's
Carlos Galan Velodrome will go forward as planned -- probably this
Sunday (15 October 95). The velodrome is an open (outdoor) one, and,
since winds are reported to be at their calmest in the morning, the
attempt will most likely take place around 8:30 or 9:00 am.
Indurain will be conducting a series of tests with Banesto team
doctors Thursday morning to determine whether he has recovered
properly from Sunday's World Road Championship effort. These will
consist of successive efforts of 5, 10, and 15 minutes duration to
determine lactic acid levels. Team Director Jose-Miguel Echavarri is
hedging his bets, arguing that Indurain's objectives for the Colombia
trip have already been achieved in the form of his time trial (gold)
and road championship (silver) medals, and saying that the group will
return home if Thursday's tests indicate that Miguel's recovery is
still incomplete.
L'EQUIPE photographer Patrick Boutroux snapped a photo of Miguel with
"epee II" -- a carbon fiber monocoque frame similar in many respects to
the bike on which Indurain broke Graham Obree's hour record in
September of last year. However, the geometry has been altered to
allow Miguel to more closely simulate his road time-trialing position,
as Indurain suffered severe back pain from the saddle position he used
in his Bordeaux ride (several centimeters forward of his normal
position). The new bike is said to have an aerodynamic coefficient of
penetration of 0.054, as compared with 0.06 on the original version.
The major mechanical difference will be the use of a larger gearing:
Miguel will be riding a 63x14, which is roughly the equivalent of a
54x12 and covers 9.36 meters per rotation. Tony Rominger used a 60x14
gearing in his record ride (9.02 meters), and it is hoped that
Indurain will be able to turn the larger "development" at an average
of 101 revolutions per minute in Bogota's rarefied air (2,640 meters).
If so, this would allow him to cover something like 56.7 or 56.8
kilometers, exceeding Rominger's (sea level) mark by roughly 1.5 km.
COMMENT: In an article in the July 1994 issue of (U.K. magazine)
CYCLE SPORT, Chris Boardman's trainer Peter Keen estimated the thinner
air of Mexico City (2,300m) to be worth 1.4 to 1.5 km (over Bordeaux)
on an hour effort, less those effects due to the non-covered nature of
the Mexico City velodrome and its inferior track surface (probable net
gain for Mexico: at least 1 km). Bogota's velodrome is roughly 10%
higher than that in Mexico City. Bearing in mind the highly
aerodynamic design of Indurain's bike (compared with Rominger's fairly
conventional frame), it would be debatable whether an Indurain success
on the order of 56.4 to 56.6 km would -- viewed in strictly athletic
terms -- represent a superior performance to that of Rominger in
Bordeaux.
The EQUIPE article points out a number of concerns the Banesto camp
has in addition to the state of Indurain's recovery from last Sunday's
seven-hour-plus effort. Foremost among these are worries about what
atmospheric conditions will be like this weekend (COMMENT: Miguel's
frame may have negligible forward air resistance, but it is easy to
see from the photo that it presents a huge side profile, with the
central triangle "closed" so that it adds virtually as much
side-surface area as a third disk wheel! It would appear that even a
light breeze would affect cornering and could dramatically increase
upper body energy requirements.)
A final concern is Indurain's weight. For most of us, this would mean
fretting about the effects of extra "ballast". But Miguel is
reportedly concerned that his current weight, which has fallen to 77.5
kilos, may be several kilos to light for optimal power output.
Look for an imminent announcement from the Banesto camp -- possibly as
early as later today (Thursday) -- as to whether the attempt will take
place this Sunday...