Some random tour tech photos
carl...@comcast.net
the wrong place here?
There's another chain-ring post in the right place, next to the crank:
Are two such chain-ring posts standard nowadays? Is it to fit
different cranks, or does the second post help pick up a dropped
chain?
***
320 tpi tires:
Herringbone side tread:
Extended herringbone tread:
Checkered center tread:
Checkered all over:
Checker-tread front tire:
***
Seat bags for telemetry?
***
Is the red valve section some famous manufacturer's marking? Or just a
little red paint added to make the valve easy to find?
Painting the valve seems unlikely, since they just swap in whole new
wheels when the riders flat.
***
When did asymmetrical rear triangles become popular?
Is it just to clear the chain and cluster, or is there something else
involved? Radial drive side, cross-2 other side.
Symmetrical but twisted seat and chain stays:
The twisted chain stays are supposed to be aerodynamic:
Maybe that makes up for all those little holes?
Speaking of aerodynamics, the seat post section is starting to look
like the back of a helmet:
Or maybe those are cooling fins?
Alleged explanation for twisted seat stays:
Note direct, no-elbow rear spokes.
A dull, symmetrical rear triangle:
***
Looks cool with the red paint, but probably the least aerodynamic seat
tube brace in the Tour:
***
An old frame trick:
Yet no one can decide on the right aerodynamic shape for the
quick-release lever:
***
Artic camouflage paint job, or maybe a pre-signed cast?
Sometimes you have to wonder if the mechanics are losing sight of
what's worth their time.
**
Fully-fairing (tapered) derailleur pulleys:
***
Tape stops the tire valve from making noise against the deep carbon
rim?
Is this an old problem that I never heard of? I can't remember any of
the endless what's-that-annoying-noise thread mentioning tire valves.
***
Carbon spokes for those who have strong views on them:
Searching at the site for "Tour de France Tech" 2010 will pull up the
main articles.
Cheers,
Carl Fogel
James
> Why is there an extra little silver chain-stop-post on the big ring in
> the wrong place here?
It looks like the chain ring can be rotated to a different set of
holes. Don't know if that's why there's an extra chain stop post
though. And is it just an optical illusion, or are the chain rings
not round?
> Herringbone side tread:
> Extended herringbone tread:
> Checkered center tread:
> Checkered all over:
> Checker-tread front tire:
They need to talk to Jobst on that...
> Note direct, no-elbow rear spokes.
I like these. Straight pull spokes have got to be better than J
bends. The only spokes I've ever broken have been rear drive side at
the bend.
> Tape stops the tire valve from making noise against the deep carbon
> rim?
I've heard this is a problem from folks who use Zipp 404s and similar
http://www.bouwmeesterwheels.com/
> Carbon spokes for those who have strong views on them:
Oh, please stop. I get nervous just looking at them.
Thanks for the nice pics.
Regards,
James.
thirty-six
> Why is there an extra little silver chain-stop-post on the big ring in
> the wrong place here?
No time to remove the extra one.
>
> Are two such chain-ring posts standard nowadays? Is it to fit
> different cranks,
Yup.
> or does the second post help pick up a dropped
> chain?
> 320 tpi tires:
> Herringbone side tread:
In the correct direction. Professional teams manage to do that.
> Extended herringbone tread:
These patterned treads do tend to be popular.
> Checkered center tread:
You know I think there ARE less drugs getting passed around the
peleton.
> Checkered all over:
Almost like it's a fashion.
> Checker-tread front tire:
Who'd have thought it?
Eh, perhaps its our good old friend Palmer he went into tyre making
after bringing us the true tangent wheel.
>
> Seat bags for telemetry?
Ho Ho, rather oversze, could secpond as a battery pack for er
something else.
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> ***
>
> Is the red valve section some famous manufacturer's marking? Or just a
> little red paint added to make the valve easy to find?
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> Painting the valve seems unlikely, since they just swap in whole new
> wheels when the riders flat.
>
> ***
>
> When did asymmetrical rear triangles become popular?
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
Dunno, but just spotted on that page Mark Renshaw has been booted off
the tour. Cav's f****ed
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
>
> Is it just to clear the chain and cluster, or is there something else
> involved? Radial drive side, cross-2 other side.
>
> Symmetrical but twisted seat and chain stays:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> The twisted chain stays are supposed to be aerodynamic:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Maybe that makes up for all those little holes?
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Speaking of aerodynamics, the seat post section is starting to look
> like the back of a helmet:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Or maybe those are cooling fins?
>
> Alleged explanation for twisted seat stays:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Note direct, no-elbow rear spokes.
>
> A dull, symmetrical rear triangle:
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> ***
>
> Looks cool with the red paint, but probably the least aerodynamic seat
> tube brace in the Tour:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> ***
>
> An old frame trick:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Yet no one can decide on the right aerodynamic shape for the
> quick-release lever:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-carlo...
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> ***
>
> Artic camouflage paint job, or maybe a pre-signed cast?
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> Sometimes you have to wonder if the mechanics are losing sight of
> what's worth their time.
>
> **
>
> Fully-fairing (tapered) derailleur pulleys:
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-trick...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-trick...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-trick...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-trick...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-fabia...
>
> ***
>
> Tape stops the tire valve from making noise against the deep carbon
> rim?
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-fabia...
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> Is this an old problem that I never heard of? I can't remember any of
> the endless what's-that-annoying-noise thread mentioning tire valves.
>
> ***
>
> Carbon spokes for those who have strong views on them:
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
>
> http://velonews.competitor.com/2010/07/tour-de-france/tour-de-france-...
almos...@yahoo.com
> Why is there an extra little silver chain-stop-post on the big ring in
> the wrong place here?
Another poster got it: alternate position of non-round the chain
rings.
http://www.rotorbike.com/
> Are two such chain-ring posts standard nowadays?
Only on Rotor.
> Is it to fit different cranks,
Does by accident but the main point is as above.
> or does the second post help pick up a dropped chain?
Never thought of that! ;-)
> 320 tpi tires:
One of the secrets of the generally-recognised outstanding quality of
Vittoria tyres lies in their casing technology, particularly the TPI.
As can be seen from the pyramids to the side, all the tubulars and
tyres in the Vittoria range are classified according to their TPI
number.
- What is TPI?
TPI stands for threads per inch (2.54 cm), referring to a one inch
length of casing.
The casing is the "heart " of the tyre or tubular and is made of
RUBBER + THREADS (nylon, cotton, Kevlar®,
polycotton…).
How is TPI calculated?
1 inch (2.54 cm)
TPI is calculated by counting the number of threads contained in a one
inch (2.54 cm) length of casing.
more threads (high TPI) = less rubber (in the same casing surface
conditions)
This means:
- LESS WEIGHT
More threads in the casing rubber means less rubber is needed to fill
the gaps between the threads.
- GREATER FLEXIBILITY and COMFORT
More threads in an inch means thinner and more flexible tyres.
- LOWER ROLLING RESISTANCE
Energy is mainly lost through rubber deformation. If there is less
rubber, more of the energy absorbed by the tyre
during rolling is used for movement, and this means smoother running.
Vittoria TPI's range from 26 to 320:
- 26 to 220 for nylon casings;
- 220 to 320 for cotton and polycotton casings.
320 TPI is a record which Vittoria has achieved thanks to the constant
efforts of its Research and Development team.
This is the ultimate guarantee of outstanding performance and
reliability.
> Herringbone side tread:
> Extended herringbone tread:
> Checkered center tread:
> Checkered all over:
> Checker-tread front tire:
All too fine to matter much IMHO
> Seat bags for telemetry?
Marketing or real advantage?
> Is the red valve section some famous manufacturer's marking?
Yep, Vittoria again.
The whole valve is removable, down to the stub bonded to the tube.
It's aluminum instead of brass (less weight).
It can be replaced with different lengths (no need to join
extenders).
It's red so people will notice. ;-)
There's more info (with pictures!) in Vittoria's own PDF:
http://www.vittoria.com/index2.php?option=com_docman&task=doc_view&gid=472&Itemid=71
> Or just a little red paint added to make the valve easy to find?
> When did asymmetrical rear triangles become popular?
Relatively new, but I'm sure individuual examples exist from history.
One recumbent company (Rans?) used symetrical frame tubes but
positioned the rear hub off center to reduce wheel dish.
Pinarello also claims assymetry:
http://www.pinarello.com/eng/dogma_carbon_462.php
> Is it just to clear the chain and cluster,
That mainly.
> or is there something else involved?
Stiffness to weight ratio. Frame lateral stiffness is driven mostly by
tube cross sections. The right chain stay can't get much wider
(constrained by clearance between the tire and rings). But the left
one can.
> Radial drive side, cross-2 other side.
Better potential wheel stiffness. Radial drive side lets the spoke
bracing angle increase. Bracing angle is limited by derailleur
interference. If some spokes are inside and some outside, the
effective bracing angle is the "average" of the inner and outer
spokes. If fthey're radial, all the right side spokes can be at the
limit.
> Looks cool with the red paint, but probably the least aerodynamic seat
> tube brace in the Tour:
BMC is touting as an advance what many frame companies rejected as too
heavy, weak and un-aerodynamic decades ago.
> Yet no one can decide on the right aerodynamic shape for the
> quick-release lever:
Trek has a novel idea: integrate the shape of the skewer with the
frame.
http://www.cyclingnews.com/features/photos/trek-speed-concept-launches-in-los-angeles/123054
> Artic camouflage paint job, or maybe a pre-signed cast?
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> Sometimes you have to wonder if the mechanics are losing sight of
> what's worth their time.
Probably not the mechanics; more likely the marketing guys from the
sponsoring companies.
> Tape stops the tire valve from making noise against the deep carbon
> rim?
Yep.
> Is this an old problem that I never heard of? I can't remember any of
> the endless what's-that-annoying-noise thread mentioning tire valves.
Yep. Not many deep carbon rim riding guys on rec.bike.curmudgeon.tech.
> Carbon spokes for those who have strong views on them:
Slowest wheels in modern history:
http://a31.idata.over-blog.com/0/02/72/10/Tests-Acheteur/base-de-donnees/aero_english.jpg
Thanks for the links Carl!
Victor Kan
> holes. Don't know if that's why there's an extra chain stop post
> though. And is it just an optical illusion, or are the chain rings
> not round?
No illusion--Sastre rides on Rotor non-round rings. They can indeed
be rotated to different orientations to fit the rider's preference.
>> When did asymmetrical rear triangles become popular?
I recall first reading about them in full page ads as an innovation of
the Lemond carbon bike line, perhaps during the period that Lemond
claimed Trek didn't invest in developing his bike brand.
AMuzi
Bicycle wrenching in this century is finally more creative
and interpretive, less restrained by the old rules based
hegemony of the benighted ages.
--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971
Norman
>
> Seat bags for telemetry?
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-a-loo...
>
> Cheers,
>
> Carl Fogel
Or one of these:
http://tinyurl.com/yh7e2c2
carl...@comcast.net
Herringbone side tread with tiny center ridges:
Yet another quick release design:
Kinky--er, new-fangled Nokon cables:
Cheers,
Carl Fogel
Andre Jute
Bit mean to give everyone only a small wedge. Here's how to cook for
two or three; when the company goes to four, you start a second dish:
http://www.audio-talk.co.uk/fiultra/FOOD.html
Andre Jute
"Here's my credibility." -- Television cook, patting belly, to prove
he eats his own food.
thirty-six
> On Fri, 16 Jul 2010 00:05:59 -0600, carlfo...@comcast.net wrote:
> Herringbone side tread with tiny center ridges:
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-conta...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-conta...
Looks like someone in tyres has been reading my posts here.
>
> Yet another quick release design:
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-conta...
QR looks sound, except that wheel is generally poor design. If they
are to forgo tangential spoking there is no need to put an adjusting
nipple at the rim. I expect those nipples are long to save scraping
the rim during buiding, it wouldn't happen if the rim was built to
take an upset and the hub flange was threaded to adjust the spokes
length.
>
> Kinky--er, new-fangled Nokon cables:
Not, old news. There's no point since the widespread application of
housing liners and a fabric wrap makes the housing indestructable for
cycling.
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-conta...
>
> http://velonews.competitor.com/2010/07/news/tour-de-france-tech-conta...
Michael Press
<09ae99da-c602-4954...@d16g2000yqb.googlegroups.com>,
Norman <invasiv...@gmail.com> wrote:
Twelve pages to give the recipe for a sandwich.
--
Michael Press
carl...@comcast.net
Photos of Look display with frame and parts cut out to show the
insides start here:
http://velonews.competitor.com/2010/07/road/tour-tech-cofidis-look-695_129513/attachment/look_695_12
Cheers,
Carl Fogel
Tom Sherman °_°
> [...]
> Relatively new, but I'm sure individuual examples exist from history.
> One recumbent company (Rans?) used symetrical frame tubes but
The company you are thinking of was ATP Vision.
There is a company called "RANS" that makes recumbents, crank forward
uprights, and aircraft, but I have never heard of "Rans".
--
Tom Sherman - 42.435731,-83.985007
I am a vehicular cyclist.
kolldata
James
> Photos of Look display with frame and parts cut out to show the
> insides start here:
>
> http://velonews.competitor.com/2010/07/road/tour-tech-cofidis-look-69...
Thanks, Carl.
A 65mm BB bearing. Hmm. Sounds like a sacrifice of power and weight
to gain a little BB stiffness? I don't get it.
Oh, and apparently "Graceful curves in the carbon of the 695 help
distribute loads." I wonder if that's because they bend more?
I laugh when I hear of people who buy one of the pros bikes at the end
of the season. They don't seem to realise just how close to dead the
bike is likely to be. Engineered to within an inch of it's life, and
ridden to within a 1/4 inch. Maybe they just like having a bike with
another persons name on it.
Cheers,
James.
James
wrote:
> On Jul 16, 2:05 am, carlfo...@comcast.net wrote:
>
> > Why is there an extra little silver chain-stop-post on the big ring in
> > the wrong place here?
>
> Another poster got it: alternate position of non-round the chain
> rings.http://www.rotorbike.com/
Ah, so Biopace with a twist. Anyone for some smoke and mirrors? I
guess even if it is an advantage in your head it helps.
JS.
Michael Press
Tom Sherman °_° <twsherm...@THISsouthslope.net> wrote:
> On 7/16/2010 7:12 AM, almos...@yahoo.com wrote:
> > [...]
> > Relatively new, but I'm sure individuual examples exist from history.
> > One recumbent company (Rans?) used symetrical frame tubes but
> > positioned the rear hub off center to reduce wheel dish.[...]
>
> The company you are thinking of was ATP Vision.
>
> There is a company called "RANS" that makes recumbents, crank forward
> uprights, and aircraft, but I have never heard of "Rans".
Yes you have. People write it here all the time.
Rans Rans Rans Rans Rans Rans Rans Rans Rans Rans Rans
--
Michael Press
kolldata
hard to say. snot like the pro's race equipment to the bitter end but
who knows what equipment is where ?
and sez right here, bikes are below the weght limit. The Velo single
500cc club racer was touted for supplicity over patchy tar: flex from
PR
sure would be interesting owning riding one if you had a pro mechanic
with it.
Dan O
Gene,
Welcome by the house while you're in the area for ice cream or a beer
or something. I think you know where it is.
Regards,
Dan
carl...@comcast.net
Hmmm . . . you add rotating mass here to make the weight limit:
But you carve holes in these rotating parts to reduce mass:
Love the "NISSAN" on that chain-stay. Maybe Ford will sponsor a
bicycle next year?
***
A leprechaun's fork boot on a brake cable, next to herringbone tread:
Probably no rubber boot over the hidden brake cable here:
***
The TDF equivalent of a trailer hitch on a NASCAR bumper:
Cheers,
Carl Fogel