Fixie's in the Giro prologue?

"trg" wrote in message
...
"Robert Chung" a écrit dans le message de news:
...
| trg wrote:
|
| I would think so too, but then why do 1K track specialists use
fixies?
|
| UCI rule 1.3.025 says:
| "Freewheels, multiple gears and brakes are not permitted for use on
the
| track during competition or training."
|
OK, next question. Why not?

Safety is a big factor. A freewheel has to have brakes and if you have
fixies and freewheels using the same track for training etc., the riders
with brakes can cause a nasty pile up because they can slow down a lot
faster. Its easier and safer to ban them altogether from the track.

Phil H

"trg" wrote in message
...
"Fake name goes here" a écrit dans le message de news:
...
| In article ,
| "trg" wrote:
|
| Are fixed gear bikes allowed in a UCI road race stage? Maybe some
of the
| track guys like Wiggins will show up on one. It's a 1km straight
prologue
| and there's a pink jersey to be had, probably by a margin of only
a few
| hundreths of a second.
|
| huh? no question, geared bikes are way faster getting up to
speed...a
| track bike would get creamed.

I would think so too, but then why do 1K track specialists use fixies?

That's not a sure thing. A four second start is considered good for a
kilo, i.e. it will take approx 8 seconds to get up to speed (30mph).
The technique is to pull up on the pedals as well as push down. Try
doing that while cha..... err crunching gears. For the prologue, there
is probably a starting ramp which will improve the start of a fixie and
reduce the questionable advantage of gears. I'll be interesting to see
the times.

Phil H

Philip Holman wrote:

"trg" wrote in message
...

"Fake name goes here" a écrit dans le message de news:
...
| In article ,
| "trg" wrote:
|
| Are fixed gear bikes allowed in a UCI road race stage? Maybe some
of the
| track guys like Wiggins will show up on one. It's a 1km straight
prologue
| and there's a pink jersey to be had, probably by a margin of only
a few
| hundreths of a second.
|
| huh? no question, geared bikes are way faster getting up to
speed...a
| track bike would get creamed.

I would think so too, but then why do 1K track specialists use fixies?


That's not a sure thing. A four second start is considered good for a
kilo, i.e. it will take approx 8 seconds to get up to speed (30mph).
The technique is to pull up on the pedals as well as push down. Try
doing that while cha..... err crunching gears. For the prologue, there
is probably a starting ramp which will improve the start of a fixie and
reduce the questionable advantage of gears. I'll be interesting to see
the times.

Saw Davide Cassani riding the course and talking through the techniques
they will using. He started off on the 53*15 and clicked his way down to
the 12 in the first 100ish metres...
On my VCR he did 1.55 and talked all the way. 1,150 meters
De Luca had just finished when RAI stopped transmitting for a coupla hours.
All the best
Dan Gregory

"Philip Holman" wrote in message
|
| UCI rule 1.3.025 says:
| "Freewheels, multiple gears and brakes are not permitted for use on
the
| track during competition or training."
|
OK, next question. Why not?

Safety is a big factor. A freewheel has to have brakes and if you have
fixies and freewheels using the same track for training etc., the riders
with brakes can cause a nasty pile up because they can slow down a lot
faster. Its easier and safer to ban them altogether from the track.


I think we may have covered this before, but it's been awhile ago. UCI rule
1.3.025 must have been modified within the past 10 years or so, because
historically you would occasionally find riders using a dual drive system. I
remember seeing a picture in a Pinarello catalog of one of their bikes with
a drive on either side of the bike. Usually, the bike would have the
smaller, starting gear set and ready to go with a freewheel and a secondary,
larger gear with the cog unthreaded several revolutions. As you would start
and accelerate in the smaller gear, the larger gear would gradually wind
fully onto the rear hub and become the effective drive once it snugged down.
The initial drive would then freewheel for the remainder of the race.

Or disqualified for using the Mavic IO.

that's a legal wheel for time trials (as are the old spinergy rev-x).

I thought that they were no longer allowed because a certain percentage(45?) of the front wheel needs to be open. But watching the
time trial some were even using Ghibli discs in front.


wrote in message oups.com...

Ronald wrote:
http://www.cyclingnews.com/road/2005...ech/?id=wilier

He's gonna flat: "both hoops will have Vittoria 180g track tyres."

Or disqualified for using the Mavic IO.

that's a legal wheel for time trials (as are the old spinergy rev-x).