Reading assignment for Magilla and Bob

Mark Fennell said:

http://forum.slowtwitch.com/Slowtwitch_Forums_C1/Triathlon_Forum_F1/A_question_for_Dr._Coggan_P1616981/

...or if the above doesn't wrap right,

http://tinyurl.com/2d6338

Not much to comment on. Coggan still has it correct.

One statement of his that I did find interesting was that
when he runs the numbers he finds that you'd accelerate
in the turn even if you coasted as you entered. Of course,
he states that much more precisely, Post #31 of the thread.

"EDIT: Okay, I ran the numbers: for a bike+rider with a total
mass of 78 kg that is centered 1 m off the ground, who is
producing 300 W at the crank and traveling 13.07 m/s when they
enter a turn with a radius of 24 m, the wheels will tend to
accelerate even if the rider's power output immediately drops
to zero. IOW, the only way that they could maintain a perfectly
constant wheel speed is if they actively resisted the cranks
upon entering the turn."

Bob Schwartz

"Bob Schwartz" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Mark Fennell said:

http://forum.slowtwitch.com/Slowtwitch_Forums_C1/Triathlon_Forum_F1/A_question_for_Dr._Coggan_P1616981/

...or if the above doesn't wrap right,

http://tinyurl.com/2d6338

Not much to comment on. Coggan still has it correct.

One statement of his that I did find interesting was that
when he runs the numbers he finds that you'd accelerate
in the turn even if you coasted as you entered. Of course,
he states that much more precisely, Post #31 of the thread.

"EDIT: Okay, I ran the numbers: for a bike+rider with a total
mass of 78 kg that is centered 1 m off the ground, who is
producing 300 W at the crank and traveling 13.07 m/s when they
enter a turn with a radius of 24 m, the wheels will tend to
accelerate even if the rider's power output immediately drops
to zero. IOW, the only way that they could maintain a perfectly
constant wheel speed is if they actively resisted the cranks
upon entering the turn."

Bob Schwartz

I didn't read all the posts but efficiency wise, it would be better to
maintain steady power all the way through the lap, not floating anywhere,
rather than float the bends and power the straights; just like a road TT.
The exception is a team pursuit where you would float the bends to minimize
the accordion effect where each subsequent rider would be gapped by the
preceding rider as he entered the bend, and stack up on the preceding rider
at the exit of the bend, if floating did not occur. (Following riders would
stack up rather than fall back into place because each rider would
accelerate with power to close the gap to the preceding rider whilst gong
through the bend. Upon exiting the bend, the preceding rider's wheel speed
would decrease, causing the following rider (with more speed) to run up on
him and forcing that following rider to move up the track to avoid a
collision or to avoid backpedaling and slowing excessively).

Carl
(only contributing to this subject because MG is not here to yank Bob's
chain)

Carl Sundquist said:

"Bob Schwartz" <[email hidden]> wrote in message
news:[email hidden]...

Quoted message said:

Mark Fennell said:

http://forum.slowtwitch.com/Slowtwitch_Forums_C1/Triathlon_Forum_F1/A_question_for_Dr._Coggan_P1616981/

...or if the above doesn't wrap right,

http://tinyurl.com/2d6338

Not much to comment on. Coggan still has it correct.

One statement of his that I did find interesting was that
when he runs the numbers he finds that you'd accelerate
in the turn even if you coasted as you entered. Of course,
he states that much more precisely, Post #31 of the thread.

"EDIT: Okay, I ran the numbers: for a bike+rider with a total
mass of 78 kg that is centered 1 m off the ground, who is
producing 300 W at the crank and traveling 13.07 m/s when they
enter a turn with a radius of 24 m, the wheels will tend to
accelerate even if the rider's power output immediately drops
to zero. IOW, the only way that they could maintain a perfectly
constant wheel speed is if they actively resisted the cranks
upon entering the turn."

Bob Schwartz

I didn't read all the posts but efficiency wise, it would be better to
maintain steady power all the way through the lap, not floating
anywhere, rather than float the bends and power the straights; just like
a road TT. The exception is a team pursuit where you would float the
bends to minimize the accordion effect where each subsequent rider would
be gapped by the preceding rider as he entered the bend, and stack up on
the preceding rider at the exit of the bend, if floating did not occur.
(Following riders would stack up rather than fall back into place
because each rider would accelerate with power to close the gap to the
preceding rider whilst gong through the bend. Upon exiting the bend, the
preceding rider's wheel speed would decrease, causing the following
rider (with more speed) to run up on him and forcing that following
rider to move up the track to avoid a collision or to avoid backpedaling
and slowing excessively).

Carl
(only contributing to this subject because MG is not here to yank Bob's
chain)

Why are you jabbering about wheel speed? Team pursuits are all about
maximizing pedal synchronization. You've been away from the event too
long.

Bob Schwartz

On Jan 8, 11:45 pm, Bob Schwartz <[email hidden]>

Quoted message said:

Why are you jabbering about wheel speed? Team pursuits are all about
maximizing pedal synchronization. You've been away from the event too
long.

Bob Schwartz- Hide quoted text -

- Show quoted text -

Now if non-athletes like Carl would remember that it's all about
synchronicity, beauty, and opportunities to bribe judges we could get
track cycling back with a full Olympic program.
Here's how it's done today!:

http://tinyurl.com/yuk8au

http://www.boston.com/ae/theater_arts/articles/2007/12/29/ballroom_dancing_goes_for_olympic_gold/

Cmon folks get with the program! This faster, Farther, [censored] is SO
grandpa.
Bill C