Road Cycling · Public discussion

1st stage ITT

Started by woodworking-greg · · Last activity · 8 posts · 475 views

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Road Cycling
Published
2 July 2005
Last activity
3 July 2005
Original author
woodworking-greg
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  1. I didn't get a chance to view the ITT today but went to letour.com and
    looked at the elevation profile. What is the elevation of that peak at the
    2.5 Km mark/and what distance is the climb. What would a rider's speed be
    going up that incline; is the advantage of going down the back side greater
    than the loss going up the climb if a rider were to for instance ride on a
    flat grade. Was there a tail wind, this speed seems almost impossible.

  2. Hills *always* slow you down compared to a flat course.

  3. Ron Ruff said:

    Hills *always* slow you down compared to a flat course.

    ummmh, actually, no. Slightly rolling hills lead to faster TT speeds
    relative to a flat course.

  4. Ron Ruff said:

    Hills *always* slow you down compared to a flat course.

    I believe that the times for the course that went up and over the bridge
    would have been quicker than if they had taken the flat route for this
    course.


  5. Quoted message said:
    Quoted message said:

    Hills *always* slow you down compared to a flat course.

    ummmh, actually, no. Slightly rolling hills lead to faster TT speeds
    relative to a flat course.

    Why could that be? Doesn't make sense based on physics, and doesn't fit
    my experience either. The only way it could happen is if the change in
    grade somehow allowed a rider to produce a higher average power.

  6. Ron Ruff said:
    Quoted message said:
    Quoted message said:

    Hills *always* slow you down compared to a flat course.

    ummmh, actually, no. Slightly rolling hills lead to faster TT speeds
    relative to a flat course.

    Why could that be? Doesn't make sense based on physics, and doesn't fit
    my experience either.

    If the up hill sections slow you down less that the down hill sections
    speed you up.


  7. Quoted message said:

    Jack Hollis wrote:

    Quoted message said:

    If the up hill sections slow you down less that the down hill sections
    speed you up.

    Right... but in fact they don't... it's the other way around. On a
    course where the uphills are equal to the downhills there's always a
    loss in average speed compared to a flat course *if* the power output
    is constant and the same. There would have to be some benefit due to
    the variation in grade that would cause the average power to go up...
    and I can't imagine what that would be.

  8. Scott said:


    Ron Ruff said:

    Hills *always* slow you down compared to a flat course.

    ummmh, actually, no. Slightly rolling hills lead to faster TT speeds
    relative to a flat course.

    Wrong

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