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CABLESETS – Part 4: SHIMANO BC-9000

Posted on Apr 12, 2013

SHIMANO DURA ACE – WHATS IN THE PACKAGE When I first received this newly introduced BC-9000 cableset (2/2013), there was not a lot of technical information available about these new  cables and housing. A call in to Shimano Bike Customer Service yielded the following: “The Dura Ace 9000 cables are different than anything preceding them. The Dura Ace 9000 shift housing is the same as SP41 (actually it is SP41), but the brake housing is completely different and MUST be used with the new polymer coated brake cable. Unlike standard SP41 housing, the new BC-9000 brake housing comes pre-lubed with special polymer compatible grease.” BACKGROUND: To take every advantage of the newly and completely redesigned Dura Ace 9000, Shimano put extra effort into designing a new cableset resulting from 2 separate feedback channels, (a) people complaining that Dura Ace 7900 was a step backwards compared to the Dura Ace 7800 -one of the smoothest operating groups ever built, and (b) the current trend of new frame designs are hidden cables and although more aerodynamic and aesthetically pleasing, the drawback...

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CABLESETS – Part 5: CLARKS

Posted on Apr 11, 2013

CLARKS – WHATS IN THE PACKAGE:   I was supposed to test the Zero-G compression-less brake and shifter sets. What came in the mail was the Zero-G Brake system and a standard Stainless Steel cable kit (packaged in the Zero-G box). So, for this article, I will be testing the Zero-G brake set. I called Clarks to discuss this issue and they said they would look into what happened and then send out the correct shifter cable kit. This was a number of months ago and I have not heard back from them yet. To summarize, it is very apparent that Clarks wants to go light. While most manufacturers use steel braiding for the brake housing, Yokozuna uses alloy, Clarks uses an even lighter Kevlar™ braiding. This is about as light as you can go. I believe this is a fantastic idea since Kevlar is very strong and stretch resistant. Clarks also uses cables that are a little on the thinner side. Yes, it really looks like Clarks wants to go as light as possible with their cablesets.  ...

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CABLESETS – Part 6: SUMMARY TABLE

Posted on Apr 10, 2013

RESULTS SUMMARY: I compared the brake lever pull using the stock Shimano Dura Ace 7900 OEM cable set as the baseline. Shown below, using either the NOKON (compression-less) system, the Shimano Dura Ace 9000 system, or the Yokozuna Reaction (compression-less) system, there is a significant reduction in the amount of force needed to pull the brake levers, resulting in a very smooth and controlled lever action for BOTH shifting and braking. Click on chart below for full size graphic.   The table below is a summary of the findings. Click on table below for full size...

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A Low Cost Laundry Detergent Mixture that Really Gets the Smell Out of Athletic Clothes!!...

Posted on Apr 10, 2013

WHATS IN THE PACKAGE(S): I have been looking for a cost effective solution that will actually work to clean our families bicycle clothes. While in high school, my daughter was in cross country and came home with some foul smelling clothes. Using a powder instead of a liquid is what her coach recommended, but, the clothes were still not 100% fresh. One day, just for the heck of it,  I added some baking soda (equal amount) and this seemed to be the boost that the detergent needed. I have been using this formula for over a year now and this mixture has not had any adverse reaction with the cycling clothes. Clothes now come out of the washer smelling fresh and clean.         +     COST: Energy efficient washing machines recommend using the lower line of the scoop. By doing this, I am getting 80 washes from the Laundry Detergent. The 13.5 pounds of baking soda is good for 200 loads. Combining these, I can do a full load of sports clothes for less than 10...

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Rotor Q-Rings Explained

Posted on Apr 9, 2013

Jeremy asked about Q-Rings. “Why are they better, what makes them work?” I found a youtube video from Rotor/Cervelo Test Team from 2010 that explains this very well <click here> Also, for a more detailed explanation of the actual science behind the Q-rings <click...

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CERVÉLO Rca – EVOLUTION (Official Promo)

Posted on Apr 9, 2013

Quite a few people have asked me for information on the successor of the R5ca. Here is a recent youtube promo I found from CERVÉLO (3/14/2013) Click on the text below. Say hello to the new Cervélo RCA. As stiff as its predecessor, the R5ca, but at an even lighter weight and with reduced aero drag. The RCA is Uncompromised Engineering...

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Designing bicycling’s lightest pro racing frame – The Cervélo R5ca...

Posted on Apr 9, 2013

(Ed. Note: Here’s a feature story from Composites World that the cycling community probably hasn’t seen.) Engineering Challenge: Optimize a racing bicycle design for ultimate performance, using the design flexibility of composites, a suite of analytical design tools and improved manufacturing techniques. Design Solution: Use a unique carbon/epoxy prepreg layup to manufacture the lightest professional bike frame ever produced yet still meet all safety and performance requirements for racing conditions.  (more)...

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Up to the top of Haleakala and back…Your how-to guide...

Posted on Apr 8, 2013

Up to the top of Haleakala and back… by Rick Schultz Several years ago, my wife, daughter and I traveled to Maui for a fun-filled family vacation. My wife and daughter wanted to take one of Maui’s famous bicycle tours from the top of Haleakala volcano back down the road to the bicycle shop 37 miles away – yes, basically it’s a 37 mile downhill ride. This sounded like a great outing with the family, but seemed a little too easy, so I opted to do the ride both ways – up the 10,023 foot volcano and back down! My wife and daughter would ride in the tour van and meet me at the top so I could ride down with them on their downhill excursion. Here’s the official Haleakala webcam – http://www.ifa.hawaii.edu/haleakalanew/webcams.shtml BACKGROUND: I have often been asked, “how would you rate this ride?” I always tell people that Haleakala is a good ride, but you need to be in shape. Several people I know have attempted it, but turned around at the park entrance which is still...

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