TURNING YOUR SPRINT POSITION
AN AERO POSITION
is the difference between a sprint position and an aero position on the
velodrome and how does it affect the set up of one’s bike?
we, as track cyclists, talk about going from our sprint position into our aero
position, it sounds like it simply means taking off our sprint bars and
replacing them with a set of aero bars. However, this is not the case. The
rider’s position also needs to be changed. When the sprint bars are taken off
and aero bars put on, all that is changing is the way the rider looks on the
bike. In order to change a rider’s position, the cockpit (saddle fore and aft
as well as height) needs to be adjusted to create the proper pelvic rotation
over the bottom bracket.
the fits we conduct at Ero-Sports, we have seen that a sprint position is one
that is in between that of a road fit and an aero fit. Although in a sprint fit
the back angle is typically much lower than a road fit, we see that the knee
angles and fore and aft of the saddle are not as aggressive as an aero fit. Often
times, we see that the saddle used for a sprint position does not allow for as
much pelvic rotation needed to achieve a proper aero position.
successfully go from a proper sprint fit to a proper aero fit, it takes more
than just swapping the bars out. To do
things correctly so that the rider gets the very most out of the effort they
are putting in, there are several changes that need to be made. On the front
end, the rider obviously needs aero bars.
They also need the correct stem that will not only give the proper
reach, but also the proper drop. The proper drop in front is crucial because it
allows the rider to correctly rotate their hips, enabling them to come over the
front of the bottom bracket, which allows for the hip angle to stay open. Drop
in front is great for aerodynamics, but if the pelvis cannot rotate, the hips
will be closed off, making the peddle stroke from 10 O’clock to 2 O’ clock very
difficult and powerless.
brings us to the cockpit. Because in an aero position the rider is more rotated and lower in front
than a sprint position, the leg extension has changed and therefore the saddle
height must be adjusted. Whether the adjustment of the saddle is up or down,
fore or aft, pelvic rotation must be correct and choosing the right saddle
plays a very large part in this. Perineal pressure and numbness should not
occur in any riding position! If pressure on the front end of the saddle is
making it difficult for the hips to rotate, then it is obvious that a different
saddle must be considered.
both sprint and aero positions are set up, one can quickly make the switch from
sprint to aero or vice versa. Both the sprint bar and the aero bar will need
their own stem of the correct length and angle. Simply take one bar off and add
the other as well as adding or subtracting any spacers necessary. For the
cockpit, the rider needs a seat post and seat for the sprint position, as well
as a separate seat post and seat for the aero position. The height at which the
saddle should be placed will be marked on the seat post assuring that it is the
same every time.
schedule both of these fits in one session, go onto Ero-sports.com and schedule
a Time Trial fit with Nate Koch. The cost for each fit is typically $275, but for
the same track bike I will complete both fits for only $350 saving you $200!!!
any further questions feel free to email me at firstname.lastname@example.org or call me on my cell
at (951) 837-0375