Posts in the category Triathlon

Polar’s V650 GPS Cycling Computer Finds Its Way to the Marketplace

Polar V650 GPS cycling computer

Cycling computers have come a long way since the rudimentary devices that just measured speed, distance and calculated a few averages for you. Now, it seems there’s an arms race to see who can offer the most data collection and integration with training apps or software.

Last September we previewed the Polar V650, one of Polar’s newest offerings. Now that it’s hit the market, here’s an updated look at the full feature set and promo video…


NAHBS 2015: New Boyd Cycling hubs take stiffness, smoothness to Eternity and beyond!

The new Boyd Cycling Eternity hubs push bearings and flanges wider than ever to create a super stiff wheel, and the unique stacked axle system helps it roll smoother by effectively disengaging two of the four bearings when pedaling.

Founder Boyd Johnson says the hubs offer the widest flange spacing out there, especially at the front, where there’s 80mm from center to center of the flanges. Out back, he says most hubs have between 50mm and 55mm between rear flanges, but the Eternity hub pushes that to 56.1mm from flange center to center. The driveside flange is pushed to 18.1mm from hub centerline to flange center, which Boyd says is the widest that can be used on a modern 11-speed drivetrain. And it’s all optimized for both stiffness and tension with a traditional lacing pattern.

Those wider flanges create a wider base, improving triangulation. That means a stiffer “pyramid” peaking at the rim, which translates to less rim deflection under cornering loads. But that’s just part of what makes a stiffer wheel, so let’s have a look inside and see what else makes them special…


Kogel pushes pressfit BB bearings wider, spins up lightweight alloy pulleys

Kogel BB30-24 pressfit bottom bracket for using 24mm Shimano spindles on Cannondale Synapse BB30A frames

Anytime someone says they can improve a pressfit bottom bracket situation, we’re all ears. Sometimes it’s by increasing compatibility between otherwise oil-and-water parts, and sometimes it’s by taking a fresh look at the design and doing things a bit differently.

For the former, Kogel’s new ceramic bearing Shimano/GXP BB30A adapter kit allows owners of the new Cannondale Synapse endurance road bike to retrofit cranks with 24mm spindles. The Synapse’s proprietary BB30A bottom bracket (a wider 73mm version of the BB30) currently only works with Cannondale’s SiSL crank or custom made FSA’s. Thanks to Kogel’s new BB the Synapse’s BB30A will accept Shimano or Rotor 24mm spindles without any adapters, and SRAM 24mm GXP cranks with the addition of a reducer.

For the latter, get a fresh look at outboard bearings below…

Hirobel’s Carbon Frame Clamp Aims to End Costly Compression Damage

Hirobel's Carbon Frame Clamp

Carbon fiber is a wonderful thing for today’s cyclists, allowing us to ride road, cross-country or even downhill frames with a previously impossible balance of high strength, ride compliance and low weight. It also allows manufacturers to get creative with frame designs in the pursuit of their structural and aesthetic goals. However, these unique frames have made life more difficult for mechanics.

The simple act of putting a bike into a repair stand suddenly became a bit of a head-scratcher with aero tubing and odd designs becoming commonplace. More importantly, traditional repair stand clamps leave delicate carbon frames vulnerable to compression damage. After watching a shop mechanic struggle to safely secure an aero-framed bicycle to a repair stand, Brandon Hirokawa and partner Marc Bellet created Hirobel Cycling Components’ flagship product, the Carbon Frame Clamp.

Get a grip on how it works after the jump…

Review: BBinfinite’s amazingly smooth one-piece pressfit bottom bracket

BBinfinite one-piece pressfit bottom bracket

BBinfinite debuted last May with a unique, one-piece pressfit bottom bracket design intended to remedy any intolerances in your frame, ensuring smooth, quiet cranks. Shortly thereafter, we received a test unit and combined it with our SRAM CX1 build and it’s been smooth sailing ever since.

The BBinfinite bottom bracket sets itself apart by putting both bearings in a single shell, allowing them to control the placement of each in relation to the other without regard for any differences in frame design. As they told us, even an offset as small as 1/1000th of an inch can cause drag and premature bearing wear. From our own experiences, we believe them. With their system, you have perfect alignment between the bearings. You also end up with a much broader contact patch between the shell and the frame, which eliminates play and, thus, creaking.

That’s the promise, here’s how it held up…


Velo Zephyr cradles your forearm w/ tapered, ergo carbon aerobar arm rests

Velo Zephyr ergonomic tapered carbon fiber arm rests for triathlon bike aero handlebars

Aiming to make those long distance triathlons and TTs a little more bearable, Velo Zephyr is crowdfunding production of their new tapered arm supports.

Rather than using a stock arm rest that’s typically much shorter, VZ’s new design spreads your weight across a larger portion of the forearm and tapers the shape to follow the natural curve of your appendage. The result should be better comfort and less slipping forward, which builder Steven Herzfeld says lets you focus more on the pedaling.

The very modest $350 Kickstarter goal has been met, but if the campaign continues to grow it’ll allow him to have proper aluminum molds machined to streamline production. As is, he’s using 3D printed molds to form the arm rests…


Bontrager Aeolus aero carbon wheels get lighter, wider & tubeless, plus disc brake options!


Combining all of our favorite features into one, the new Bontrager Aeolus D3 wheels are looking like category killers by going wider and lighter and adding disc brake compatibility.

Across the entire line of depths ranging from 30 to 50 to 70 to 90 millimeters in depth, all of the clincher rims get lighter by up to 110g per pair. And, the clincher rims increase to a healthy 19.5mm internal width between the bead hooks (27mm external) and get their proven TLR (TubeLess Ready) design. All depths come in both clincher and tubular options, and the 3 and 5 series get disc brake options with hubs ready for Shimano’s CenterLock rotors.

All of them use the D3 shaping to improve aerodynamics on both leading and trailing edges, and they’ve got a detailed white paper (PDF) that explains their aero shaping, theory and test results. The short of it is pretty standard for modern aero wheels: it’s designed to reduce drag on both the tire-leading and rim-leading sides while also improving stability in crosswinds. In this day and age, those are simply the minimum requirements to play ball, it’s the other features that make ’em worth a look…


Jagwire Elite Cables Ditch Coatings for Ultra Slick, Polished Steel

Jagwire elite cable super polished no coating shift (3)

As drivetrains get more and more speeds, and shifting tolerances become more exact, the quality of shift cable is more important than ever. Many cables rely on a polymer or PTFE coating to offer silky smooth shifting, but coatings usually suffer the same fate – they wear long before the steel cable inside.

For Jagwire’s new Elite cables the answer is simple. Just eliminate the coating completely. Instead of coating the cable Jagwire has revisited the construction itself which achieves an impressively smooth finish thanks to stainless steel strands that are tightly wound and then highly polished. The polishing process removes any of the burrs on a microscopic level that make the cable less slick and creates a cable that supposedly functions just as well as coated cables but is more durable.


Wheels Manufacturing heats up with cryo-hardened Zero ceramic BB’s


Technically these have been available direct from Wheels Manufacturing for about eight months now, offered in what they’ve called a “soft launch”, but they’re making their formal introduction at QBP’s Frost Bike this week. This means they’re going prime time with broader distribution, and as their reps show them off in below freezing temps, the story of what makes the Zero ceramic bearings special will seem right at home.

Using solid ceramic bearings, the races are cryogenically frozen to make them ultra hard. That increases the smoothness and durability, and then they swap in a single-lip seal rather than the usual dual lip seal to further reduce drag. Here’s the nuts and bolts of it…