Tech news for August 30, 2001

By John Stevenson

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Kirk O'Bee's Litespeed
fiízi:k's latest
Letters: UCI weight rules; BigMAT's Looks

Index to tech updates

In the pits

Kirk O'Bee's Litespeed Ultimate

Click for larger image
Will Kirk's real bike please stand up.
Photo: © Mike Spilker

After we ran a pic of Kirk O'Bee's bike a couple of weeks ago (when he won the USPro criterium championships), Navigators team mechanic Mike Spilker dropped us a line pointing out that the shot was actually of Kirk's spare bike and not of his main ride. To prove the point, Mike sent us these shots of O'Bee's actual race-winning bike, and very droolsome it is too.

Titanium numbers
Titanium is alloyed with aluminium (Al) and vanadium (V) to increase its strength. The numbers indicate the percentage of the elements, so 6Al/4V titanium is 90 per cent titanium, 6 per cent aluminium and 4 per cent vanadium.

The Navigators ride Litespeed titanium frames, with an eclectic mix of high-end components from the of the team's many sponsors. O'Bee's bike is built around a stock Litespeed Ultimate, a frame that mixes 'traditional' 3Al/2.5V titanium with stronger but harder-to-work-with 6Al/4V in the aero down tube.

The Ultimate is clearly designed for the aggressive, attacking style of racing that characterises the US criterium circuit, with a back end so tucked-in the seat tube is modified to accommodate the rear tyre. Mike is highly impressed with the durability of the Litespeed's work: "†I have worked with the team for 3 years now. I have not had to send a frame back for being cracked yet. When I visit other team trucks here in the states they have 'spare frames' strapped to their roof in case they have to replace a frame. This is a problem I don't have to worry about."

Asked if the frames are stock or custom, Mike says, "Kirk's Litespeed, Ultimate and all the parts are stock (off-the peg). We only have one custom made road bike on the team (Vassilli Davidenko's). †Also, a few of our TT bikes, the "Blades", are custom made. Adham Sbeih's is an example of the TT bike. It is completely custom with the 3 inch bladed tubes.†It's a beautiful machine. They are all beautiful machines."

More information: Litespeed's website

Click for larger image
Full frontal
Photo: © Mike Spilker

Up front

The Navs use Stella Azzurra bars, stems and tape and Reynolds carbon fibre forks.

Stella Azzurra's Tecno-Spugna tape is available in five different densities for absolute fine-tuning of the bike's feel at the bars, and the Profi handlebar is shaped from 7075 aluminium for strength and light weight. It's available with 26mm and 31.75mm centres.

Between bars and wheel, the Reynolds OuzoPro fork has a claimed weight of just 350g.

As you can also see in this shot, the bikes use Shimano brakes, and, in fact, Shimano transmissions too. However, Shimano's not a team sponsor: there's a purely practical reason for the choice: "The choice of Shimano is based on the fact that the parts are very accessible here in the States.†If our riders have a problem with a part, and I am not around to fix it, they walk into most shops and their problems can be fixed or a new part installed that day.

"We are hoping that the door for full sponsorship will be open to Shimano or Campagnolo this next year. We have had a very good year with results in 3 National Championships. I hope this leads to more doors being opened for the team... †and we do have many Italian parts already on our bikes.

"I talk to my bikes a lot (I know it's weird). Maybe next year, I can learn to speak Italian to our components. The Japanese language is some times hard to speak."

More information: Stella Azzurra 's website

More information: Reynolds' website

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Hubba hubba
Photo: © Mike Spilker

Watching the wheels

O'Bee rolls on Cane Creek Crono Carbon wheels held in place with Salsa Flip-off skewers. The wheels use weight-saving titanium spokes (16 up front, 20 in the rear) and have the nipples at the hub to take them out of the faster-moving airflow round the rim. Throw a deep carbon fibre rim into the mix and you've got one slippery pair of wheels.

As for the skewers, the Salsas' beefy levers means they aren't the lightest around (though we're talking grams here) but they are among the nicest to use, and when you spend half your life fitting and removing wheels, that makes a difference.

More information: Cane Creek's website

More information: Salsa's website

Click for larger image
Speedplay's finest
Photo: © Mike Spilker

Count Zero

Speedplay has always danced to a different drummer from other pedal makers, effectively putting its engagement mechanism on the shoe and leaving the pedal as a very minimal component. The Zero pedal is an evolution of Speedplay's long-standing X pedal system, offering adjustable float (between zero and 15 degrees) as opposed to the X pedal's unlimited float, and on-the-bike adjustment.

More information: Speedplay's website

Click for larger image
It's supposed to be like that
Photo: © Mike Spilker

Is it bent?

No, it's a Thomson Laid back, and it's supposed to look like that. It's also very light and, because the bottom of the clamp is part of the post, very strong. But it does look slightly odd, and Mike says, "Kirk's post is really low in the frame. On the other team bike's that have the laid back post, you can normally see the set back and it does not look so odd.†He probably should be on a bike one size smaller.† Maybe next year… he seems to be going well on this set up."

More information: Thompson's website

Click for larger image
Mmmmmagnesium
Photo: © Mike Spilker

Forza!

If the threadless revolution has done one thing, it's encouraged stem makers to think outside the square when it comes to materials and shapes. Slavish imitation of Cinelli was all very well in its day (and that company made — and makes — some lovely stuff) but there's only so many rounded aluminium stems a geek can take, before wandering off to drool over a stem like the Stella Azzurra Razzo. Forged from magnesium alloy, then CNC-machined to its final shape and smothered in deep, dark anodising to protect the volatile but light metal, it's a stark and angular work of art. Titanium bolts are the finishing touch.

Mike has nothing but praise for the company: "In my three years with the team, until now, stems have been our downfall. In 1999, I told our old sponsor that we where having serious issues with the stem. The bars where slipping and the new design was not safe. They said to try a couple of things that helped but did not take care of the big problems.†Then, they blew me off when I kept going after the issues.

"Then it happened, a stem failed in dramatic fashion. Broken collar bone, big photo in Velonews, nationwide recall, and lost sponsor. †

"In 2000, we switched sponsors.†But they did not have stems to give us, so I had to drive 5 hours, to a friend's shop (thank you Sham), †to custom make stems for the next day. The stems were made for mountain bike bars, so we had to drill them to work for the team.†

"Then 2001 rolls around. We have Stella Azzurra come on board. At first, I am thinking to myself, 'a new company… new problems.' I could have not been any farther from the mark. The first prototype stem we get, I put on. It cracks. I send a digital photo and a drawing to my boss that evening, 6:00pm, describing what is happening. Three hours later he forwards the information to Stella Azzurra in Italy.†The next morning, 12 hours later, anew design was done, made, and tested. The design was e-mail to me to look at, with a request of how many and what sizes did I need.†Problem fixed in 12 hours on the other side of the world. That was such an incredible thing for Stella Azzurra to do… I have full faith in Stella Azzurra, plus their bar tape is indestructible."

More information: Stella Azzurra's website

Full Specification

Frame: Stock Litespeed Ultimate, 3.45lbs (1,570g)
Seat tube & head tube angles: 73 degrees
Wheel Base: 95.3cm
Material: 3Al/2.5V titanium taper-butted tubes; Aero 6Al/4V titanium down tube
Head tube: 1 1/8in

Group: Shimano Dura Ace

Wheels: Cane Creek Crono Carbon, 575g front/868g rear
Spokes: Ti bladed
Rim: Carbon aero 58mm deep
Skewers: Salsa Flip offs
Tires: Vittoria tubulars

 

Stem: Stella Azzurra Razzo Magnesium Alloy, 155g, titanium bolts
Bar: Stella Azzurra Profi, 7075 aluminium
Tape: Stella Azzurra Tecno-Spunga
Head set: Cane Creek C-6, 93g

Pedals: Speedplay New "Zero", 0-15 degree float, 164g
Seat post: Thomson Laid Back, 188g
Saddle: Fi'zi:k Pave, 250g

Brake Pads: Kool Stop Ceramic (green)
Bottle Cages: Plastica Sole
Lube: Pedro's Ice Wax
Computer: Cateye 2dX

Snippets

New from fi’zi:k

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Just look at the differential weave on that
Photo: © Fizik

Italian saddle maker fi’zi:k claims their newest model, the Aliante, is the most comfortable lightweight saddle ever. Tipping the scales at a mere 160g (claimed weight) it certainly qualifies on the gram count. Fi’zi:k says it hits the comfort mark too thanks to a hull that uses two different carbon fiber weaves to provide flex and strength.

And if you doubt the integrity of carbon fiber rails, fi’zi:k says the Aliante's rails are "multi-directional woven carbon fibers reinforced with a tubular aluminum grooved wrap at the clamp area to both protect the carbon rails and to provide a positive grip with the clamp." The practical upshot is that even if the rails fail, they don't fail catastrophically and dump you on the seatpost.

The Aliante will be available late September and is expected to retail for US$180. There will be versions with black leather and 'ice blue' Nytek covers.

More information: fi’zi:k's website

Letters

UCI minimum weight restrictions

Last week, Sean Lally from England and I disagreed about the UCI's weight restrictions on bikes (and I have to confess that as a gear freak, I was playing Devil's advocate — I'd love to see even fancier and lighter bikes but I can also see good reasons for restrictions to keep the playing field level, affordable and safe). We had several letters on this subject, and I'll let Sean have the first response:

I remain unconvinced that the new regulations will bring about more affordable bikes. The Trek 5900 retails At £3,600 in the UK. Top TT frames retail for between £2,000 and £5,000.

This certainly is not affordable for most of us. Of course there is a limit as to how low a weight a bike can go and still be safe, and ultra lightweight components have sometimes proved to be less than 100 per cent reliable, but surely there needs to be room for improvement and innovation, regarding weight, safety, reliability and aerodynamics. It seems to me that the current UCI regulations restrict this.

As for the mountain bike world, it is hardly a hugely popular sport with TV audiences compared to road riding, so the marketing gain is bound to be less.

Sean Lally
Totnes, Devon, England.

The UCI did get some support, though (and that may be a record in itself):

I fully support The UCI's decision to set minimum bike weights. It promotes an element of safety into the sport. As an old school mountain biker I remember the days when guys used to drill out their bar ends in an attempt to get their bikes as long as possible. Those same guys also had horrific crashes due to those bar ends snapping while they were using them. Ouch. What the cycle industry needs to do is make these lightweight parts stronger. Otherwise we spend all our money replacing light weight bits that break. It's easy to make something light, it's a challenge to make it light and durable. Just because the pro's always turn up on a fresh looking bike every race and there's never any talk of them breaking gear you'd be stupid if you think it didn't happen. Pro cyclists put their equipment under much greater stresses than the average amateur rider, and amateurs still break equipment.

If you want to keep throwing your money at your bike, so be it. I'm after something lightweight that will actually last at least a couple of seasons. I doubt that I'm alone in my view.

Karl Butler
Auckland New Zealand

Actually, you do hear of pros breaking equipment, sometimes in the scariest ways. For example, take a look here at the bike that fell apart under Jay Sweet at last year's world's. During the ultralight fad that swept mountain biking in the early 90s, we used to ask what you owned after you'd had a Ritchey P-23 for a year? Two Ritchey P-11 1/2s. (In fairness to Ritchey, only the first incarnation of that bike had problems — later ones were fine.)

This writer agreed with Sean:

All bikes need to be safe no matter what they weigh. Is a bike with lots of heavy handlebar tape slightly safer than one without? Banning new light-weight technology because it might be unsafe is tantamount to banning certain colors from the peloton because they might be distracting. The UCI should have safety regulations that apply to all riders and equipment regardless of weight or color.

If cost is an issue, why not ban expensive equipment instead? Banning light-weight equipment because it's likely to be expensive is punishing the criminal before the crime's been committed.

Jim Van Horn
Seattle WA, USA

As with many sporting regulations, this comes down to what's intended against what's feasible. Tracking the cost of every bike in the peloton requires a burdensome bureaucracy; tracking the weight requires a set of accurate scales.

Finally on this subject, here's a pleasing suggestion for a compromise system:

Sean Lally raises some valid criticisms about the UCI's weight limits, but that could easily be addressed the UCI revising the number slightly downward every several years, as it becomes easier to build a safe and not exorbitantly expensive bikes right near the limit. The top racers would still have the best stuff and innovation would continue. An eighteen pound bicycle in, say, 1980, was either unsafe or extremely expensive. Today a safe one is only somewhat pricey. Technology changes so the details of the UCI policy should change with it, while the overall aim of the policy (reasonable cost and safety) remains.

John Tomlinson
USA

BigMAT's Looks

We also had several letters in response to our request for more information about the apparently aluminium frame of some of BigMAT's Look bikes.

I recently read an article in CycleSport that mentioned Magnus Backstedt was riding a specially-made aluminium bike as well, frame painted to match the standard team issue. The reason cited was because he is of such size and power, he tends to be a bit harsh on equipment (he always breaks things, bluntly put). I'm thinking the KG241's aren't up to the rigors of a larger guy with a lot of power, in the long run, and the aluminium rigs would do a little better, in terms of durability and stiffness.

If you look closely at the tricolor mount (second from front, same photo), it doesn't appear to match bike sitting third in line, which appears to be a KG241. Perhaps Look is using BigMat to prototype some new frames for next year?

Robert Springer

It is definitely aluminium. Jalabert has been riding one almost the entire year. Rumour has it that Magnus Backstedt has also been riding one because he rips apart the carbon Looks. A buddy of mine who reps Look in the United States confirmed that they are doing some aluminium stuff.

Dirk Sprogoe
USA

And Mark Adams wrote to point out that there are aluminium frames on Look's website. There are, but they get 'lower billing' than the carbon bikes, and I was curious to hear if anyone knew of a high end Look project in the offing. We've asked Look what they're up to, and we'll let you know next time.