Bikes & Tech: Page 521

Bike and gear reviews, maintenance how-tos, and tips

Technical FAQ with Lennard Zinn: That ticking could be your seatpost

VeloNews technical writer Lennard Zinn is a frame builder, a formerU.S. national team rider and author of several books on bikes and bikemaintenance. This is Zinn's VeloNews.com column devoted to addressing readers'technical questions about bikes, their care and feeding and how we as riderscan use them as comfortably and efficiently as possible. Readers can sendbrief technical questions directly toZinn. We'll try to print a representative sample of questions regularly.Question: One of my riding partners had a ticking (not a creak)sound in his ride.  It would only happen when pedaling

First Try: We try out the new Dura-Ace pedal

It's no secret that Lance Armstrong never used Shimano's SPD-R system. He rode what he liked and those were his old Look-compatible Shimanos. After three successive Tour de France wins, the Japanese manufacturer finally decided it had enough of watching its decade old equipment bring Armstrong to the podium and set out to build a pedal Lance would approve of. It looks like the new design got the nod of approval: Armstrong has kept them on his bike since spring. The svelte 276-gram/pair (plus 60 grams for the cleats, screws and washers) pedals are the fruit of their radical redesign labor.

First look: New XTR tubeless wheelset

While we thought 2003 couldn't get any brighter for Shimano and its highly redefined XTR group, the Japanese manufacturer surprised us again this morning with the announcement that it would be producing its first XTR-level wheelset. Sources report the wheelset should go for around $850 and be available about the same time as the component group (around January, 2003.) Vital stats include: total wheelset weight of 1650 grams, both 24 spoke count in a paired lateral crossover pattern and, most significantly, are both tubeless and traditional-tire compatible. Although the wheels were not

Marin Introduces New Suspension Design

Marin Bikes just announced the launch of its patented Quad technology which will be featured on the company's XC full suspension bikes. The Quad was developed with chief designer John Whyte, an ex-Formula One engineer and cycling enthusiast. The Quad, named for its four-bar linkage system, four inches of rear wheel travel and quadratic wheel path equation will be available in four models including the East Peak, Rift Zone, Mount Vision and Mount Vision Pro. According to Marin, the Quad suspension design is a four-bar linkage system with a patented Intelligent Pivot (i.e. similar to VPP

ONCE and future kings and broken bars

So why did ONCE go so fast on Wednesday? Was it because the team pedaled harder and stayed in better formation and had good equipment? Well, that is one explanation. Another is that all of the other teams only had nine riders, while they had ONCE (Spanish for “eleven”)! Sorry... I had to throw that in. Beyond the numbers, it is worth noting that the teams that go fastest have 100 percent of the riders wearing aero helmets, rather than a mixture of headgear and even of clothing and equipment. You also tend to see other riders on fast teams using their aero’ bars further back in the line,

Technical FAQ with Lennard Zinn: Follow up for shimmy on 853 Lemond

VeloNews technical writer Lennard Zinn is a frame builder, a formerU.S. national team rider and author of several books on bikes and bikemaintenance. This is Zinn's weekly VeloNews.com column devoted to addressingreaders' technical questions about bikes, their care and feeding and howwe as riders can use them as comfortably and efficiently as possible. Readerscan send brief technical questions directlyto Zinn. We'll try to print a representative sample of questions ineach column.Follow-up from previous discussions:There was plenty of input from readers on the subject of mixing

Technical FAQ with Lennard Zinn: World’s Freire

Oscar Freire sprinted past Robbie McEwen and Erik Zabel to win stage two aboard the mount that has brought so many victories to Mapei and Rabobank. He was riding a Shimano Dura-Ace equipped Colnago C40, the 2.5-pound frame that won Paris-Roubaix five times between 1995 and 2000. But it is not just another bonded carbon frame, since Colnago’s construction methods C40 are unique and analogous to its method of constructing steel frames. Integral to the C40 are one-piece molded, hand-finished carbon lugs that eliminate the bonding problems and weight of aluminum lugs and are stronger,

Technical FAQ with Lennard Zinn: Armstrong’s aerodynamic TdF suit

Armstrong won on a special superlight prototype aero’ bar that Dedahad whipped out for him for the Tour. It is completely flat; there is nodrop to it like the Vision Tech bars the team has used in the pastand still has on some of its time trial bikes. It is made out of aluminum, but according to Deda’s Fulvio Acquati, “We are still working out the exact design with Armstrong, and when we get it exactly the way he wants it, we will make it out of carbon.” Dedaalso has a carbon aero’ bar that Acquati was showing to the teams the daybefore the prologue. The carbon base bar is just a prototype,

Technical FAQ with Lennard Zinn: Hamilton’s crash at the Giro caused by compatibility issues

The image of Tyler Hamilton crashing at the bottom of a key descentas the Giro d’Italia’s other main contenders is firmly emblazoned inthe minds of anyone watching OLN’s coverage and saw that loop of tape played over and over. Coming through a turn, Hamilton stood up onhis pedals and suddenly lurches forward and hits the ground. Hamilton stated in his diaryon velonews.com that the freehub had not engaged when he stood on thepedals, causing the crash. The pain he had to deal with with over the remainderof the Giro is well documented, as is the amount of time he lost on mountaintopfinishes

Technical FAQ with Lennard Zinn: Champion’s footsteps

Russel Bollig’s path to Lance Armstrong’s feet began with Tyler Hamilton,for whom he first built some custom orthotics in 1992. About four yearsago, Christian Vande Velde got some as well. They passed the word on toArmstrong, who was looking for an improved fit in his cycling shoes, andafter the 2001 season Bollig went to Austin, Texas, to fit the three-timeTour champion. While at Armstrong’s home, Bollig used resin-filled casting socks tomake casts of Armstrong’s feet and ankles. Then, back at his Podium Footwearshop in Boulder, Colorado, he made plaster duplicates of Armstrong’s feetfrom