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How to gain back some free wattage – Shimano RD-6800/6870 Upper Guide Pulley fix...

Posted on Dec 31, 2014

This simple how-to article is specifically for the Ultegra line of rear derailleur tension & guide pulleys, aka jockey wheels. In this specific case, the RD-6800 guide pulleys are identical to the 6870 guide pulleys so for sake of simplicity, we will call them RD-68xx. This article does NOT apply to the Dura Ace RD-9000/9070 tension & guide pulleys since the RD-90xx pulleys use sealed bearings. While cleaning my bike the other day, I noticed that the upper pulley had considerable resistance so that it was hard to turn by hand. Since my RD-6870 only has a couple thousand miles, it seemed unlikely that the pulley/ceramic bushing was worn out. I had already removed the rear wheel so I took a brand new 3mm allen wrench and quickly removed the upper jockey wheel. Note: using a NEW allen wrench will help prevent stripping of this screw. Pinching the dust caps together ensured that I wouldn’t lose any bits and pieces. Placing the jockey wheel on the workbench I stripped it down completely. HOW IT WORKS The upper jockey wheel is located in what...

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Best Place to Position the Brake Pads on Aluminum Road Bike Rim...

Posted on Dec 30, 2014

 So where’s the best place to position your road bike’s brake pads? Last Saturday, while waiting for everyone to arrive at the group ride, the self-proclaimed bike repair guy, whose shop is in his basement, was helping a female cyclist who was fairly new to the sport. She told him that something was rubbing and shaking while she was riding, especially when braking. He took the bike for a quick up the block and back and told her it was her brake pads. She was running them dead center on the brake track and he said that he prefers to see them as high as possible. I sat there for a minute trying to understand his logic which still doesn’t make sense. The True Answer is that it’s better to run the pads lower than higher (lower as in closer to the spoke nipples than higher which is closer to the tire). In fact, its best to run them as low as possible just before they start hitting the side of the rim. There are two reasons for this. From a...

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PROVIZ 100% Retroreflective Jacket

Posted on Dec 19, 2014

  INTRODUCTION PROVIZ, a company located in Christchurch, Dorset, United Kingdom, started in 2009 with a passion to design and develop affordable visibly bright and reflective cycling clothing and accessories. Due to the lack of light-reflective clothing available for cycling, motorcycling and runners, PROVIZ has developed a number of unique, high visibility products that are at another level altogether. Today, PROVIZ continues to grow their product range in new application specific markets by introducing light reflective jackets and vests, motorcycle jackets, a complete kids line, light emitting accessories and even reflective helmets. This review will concentrate on the REFLECT360 cycling jacket and REFLECT360 backpack cover. WHAT IS REFLECT360? REFLECT360 is a super-reflective technology designed as the super reflective stripes on safety vests for public works agencies and construction workers. 3M™, a US-based company, offers a similar technology called Scotchlite™. I say technology since it can be built into almost any fabric. 3M™ Scotchlite™ 8910 is available in larger sizes such as 1270mm (50”) x 100m (100 yards) sizing. 3M™ builds to a US ANSI/ISEA standard and PROVIZ builds to...

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STRAVA incorrectly calculating total elevation/altitude...

Posted on Dec 10, 2014

Recent issue with Strava. Meaning … DON’T BELIEVE THE ALTITUDE DATA IN STRAVA. I did a local course this morning. The Magellan Cyclo 505 stated 4,080.56 feet of climbing. When I uploaded this ride to Strava, Strava said 6,918 feet. How can these be so different? The Magellan Cyclo GPS creates a GPX file and every second builds on this file as you ride, updating each parameter including Lat, Lon, elev, hr, power, etc. After the ride, when you hit STOP, the cyclo ends the recording, calculates the totals and closes the file – that’s why it takes several seconds for the Cyclo 505 to respond after you hit STOP. At home, you can upload this file to your local Magellan account where a graphical representation of the ride is displayed. Regarding Altitude, the Magellan adds all of the waypoints up and, for this ride was calculated to be 4,080.56 feet. I then uploaded to Strava and now the total Ascent is 6,918 feet. So where is the discrepancy? I then took the GPX file and changed each <ele> to <xxx>...

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The GUTR – the Next Generation of Headbands

Posted on Dec 1, 2014

GUTR™ SPORTS HEADBAND ***** Update: 12/6/2014. Does the GUTR™ really work? Before this mornings’ ride, I was running a couple minutes late and had forgotten the GUTR™ which sat on the workbench in the garage. When I got to the bike shop, I thought that I probably wouldn’t need it since the weather was on the cool side. Wasn’t supposed to get over 62F. Boy was I wrong. About 40 minutes into the ride, the foam liner on my helmet had completely saturated, sweat started flowing down my face and into my eyes. You know, that stinging sweat. The group was hammering at 27mph through the campground so I needed to keep both hands on the bars. It wasn’t until the turnaround at 20 miles that I could wipe the sweat from my face and eyes. The return trip was even faster due to a slight tailwind. All the way back sweat in my eyes. So, does the GUTR™ work? You bet it does. That is the last time I forget it at home! ***** There are several sweat...

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Shimano Camera CM-1000 Long Term Use Review

Posted on Nov 20, 2014

      SHIMANO CM-1000 SPORT CAMERA After unpacking the shipping box and laying out all of the bits and pieces, I read through the User’s Manual as well as downloaded the 1-page instruction sheet, and even though you might be tempted to just start playing with the camera, I highly recommend spending 5 minutes to go through the User’s Manual and Instruction sheet. The camera’s operations are very easy to understand and are listed here: http://shimano-sportcamera.com/en/index.php and here http://shimano.camera/us/product.html PREPPING THE CAMERA Unlocking the rear cover reveals 2 slots, one for the supplied USB charging cable, the other for a Micro SD/SDHC card. When you purchase your card, make sure is states at lease class 6. Most are class 10 now. Your card can be 8GB, 16GB or 32GB. I recommend going with 32GB since it will hold an entire 2 hour Full HD video. A 16GB card will fall short. After installing the memory, plug the camera into your PC, Laptop, or an existing 5VDC wall mount (cell phone) charger for about 4 hours to fully charge....

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