Sam Pilgrim links up with Blake Samson and Daryl Brown to take on the slippery-when-wet Black Mountain bike park. more »
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Properly tightening your bolts in a specific pattern ensures that there is a uniform distribution of load across the part’s surface. Photo courtesy of Art’s Cyclery
Editor’s Note: This article is courtesy of the team at Art’s Cyclery. The original post can be found here.
So you’re installing a new chainring (or other critical component) and are wondering if there’s a specific pattern or way that you should tighten the bolts? Well, although this process may seem entirely simple, there’s more to it than simply tightening your bolts one-by-one. This holds especially true for those folks utilizing carbon parts. Press play to learn more.
//www.youtube.com/watch?v=qDN0SXEaj94
As a recap, there are three separate components that will utilize a specific bolt tightening pattern:
Properly tightening your bolts in a specific pattern ensures that there is a uniform distribution of load across the part’s surface. If you were to simply go one-by-one and tighten the bolts, the part may seat incorrectly and will end up with uneven pressure across its surface. Depending on whether you’re working on a 4-bolt, 5-bolt, or 6-bolt part, the process for tightening the part will differ.
Many different cranks and most stems utilize a 4-bolt pattern. Start by installing any bolts you’ll be using hand-tight. Start with the bolt in the upper left corner and tighten it down until it’s just begun to tighten. From there, you’ll repeat the same process on the bottom right bolt, then the bottom left bolt, and finally the upper right bolt, creating an “X” across either your stem or chainring.
Once all bolts are semi-tight, follow the same “X” pattern as before and go through one-by-one and tighten the bolts to their final torque specs.
Many cranks and chainrings utilize a 5-bolt pattern. Once again, install all bolts hand-tight in any particular order you like.
For all 5-bolt parts, you’ll want to tighten them down using a “star” pattern. Starting at top-dead-center, tighten the first bolt until it’s just begun to tighten. Going clockwise or counterclockwise, skip the next bolt, and repeat the process. Keep tightening every-other bolt until all five are slightly tight. From here, follow the same “star pattern” and tighten each bolt to its final recommended torque spec.
All disc brake rotors have a 6-bolt pattern. After tightening all 6 bolts by hand, start at top-dead-center and tighten your bolt. From there, you’ll want to go straight down, upper right, lower left, lower right, and finally upper left. Repeat the same process and tighten each bolt to the manufacturer’s recommended torque spec.
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Editor’s Note: “Over a Beer” is a regular column written by Greg Heil. While Greg is the Editor in Chief for Singletracks.com, any opinions expressed in this column are his alone and do not necessarily represent the opinions of Singletracks.com. At the end of every calendar year, many people look back on the previous 12 months and reflect …
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The two-part Weatherneck system was designed for cyclists, but plays well with any outdoor hobbies, too.
To enjoy yourself outside during the winter, you need to layer. By now, most of us have our base layer/jersey/outer game down. But often our faces still suffer. Enter the Weatherneck system.
The back of the mullet hat features a secret hidden pocket that’s large enough for a hand warmer, credit card, or cash.
Created by Brian Davis, the mind behind Fix it Sticks, this modular Balaclava consists of two pieces. The first part is a mullet hat that keeps the top of your head and back of your neck warm. The second is a ventilated face mask that’s held in place via magnets. As you warm up, the mask can be removed and stashed in a pocket.
The original Weatherneck is backwards compatible with the mullet hat, but it might be worth upgrading to the new system considering the improvements.
This design is a improvement over the original Weatherneck, which launched last winter. While this design is backwards compatible, consider upgrading because of the new magnetic attachment, steel tabs to simplify hat re-sizing, hat that covers the neck and ears, higher airflow mesh that reduces fogging, and the mask itself, which is now 2” longer.
The entire Weatherneck system is currently available on Kickstarter for $ 35. The project is fully backed and Davis expects orders to ship before Christmas. If you want to order just the face mask or mullet hat, expect to pledge $ 20 and $ 25 respectively. Sound expensive? Remember, these products are manufactured in the United States.
To learn more, visit Kickstarter.
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Hundreds of miles of singletrack, tons of vert, wet conditions and electronic shifting? If there was ever a proving ground for new MTB technology, the BC Bike Race is it. more »
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Put the work in now and you’ll be smiling come the start of the 2017 riding season.
What do you think of when you hear core work? If you’re like me, it probably goes something like, “Yeah, I need to do more of that!” It’s always that one elusive thing I’m trying to get myself to do (okay, and maybe stretching, too) and yet every excuse in the book surfaces when I think about it. There are times I’m in a good groove and do core work faithfully. However, I’ll get out of the routine, and months will go by before I start up again. My personal catalyst to get moving again is a stacked 2017 race season, including The Pioneer in New Zealand, a 7-day stage race with an anticipated race time of between 30-33 hours.
I’ve been in a good routine lately and I can tell that my cornering and technical climbing has improved. In order to keep my motivation fueled, I’m concentrating specifically on how it’ll help make cycling even more fun and fulfilling. Not only will a stronger core improve technical ability, but it’ll help relieve low back pain. Since my regimen is going well, I wanted to share five of my favorite core exercises that I think make a huge difference. These core exercises keep things fresh as an alternative to the standard crunches, leg lifts, or planks. If you do them for 5-10 minutes a day, you’ll notice a difference in your strength. Do each exercise for at least 30 seconds and go through the sequence twice.
I’ll start with my favorite. Stand with your feet hip width apart and put your hands behind your head. Raise your right knee up just higher than your pelvis, twist your torso and engage the core to bring your left elbow to your right knee. Exhale as you bring the knee up and inhale as you lower your leg. Alternate sides. You can do them as fast or as slow as you want to.
Most of us are familiar with bicycle sit-ups. However, I like to put my own twist on them for added challenge. Lay on your back with your fingers interlaced behind your head. Hinge till your knees are at a 90-degree angle. Crunch up to bring your right elbow to your left knee. Make contact between the elbow and press it gently into the inside of your knee and pause for 2 seconds. Switch sides and move in between the two exercises slowly.
Lay down with your arms above your head and legs straight out. Exhale and raise your torso up while simultaneously raising your legs to about a 45-degree angle from the floor. Keep your chest and shoulders back. Touch your legs and inhale as you lower. Make sure you are sitting up slowly so that you don’t cheat with momentum.
I like this exercise because you get a core workout, but it also offers some great built-in stretching for the lower back. Lay down face up with your knees bent to 90 degrees and arms straight out to your sides. Keep your knees and feet together, maintain the 90-degree angle of your knees, and rotate the legs down until they are about 8-12 inches off the ground. Make sure your opposite shoulder is in contact with the ground. If your shoulder is lifting, only twist the knees as far as you can until the shoulder starts to lose contact. Alternate between sides and keep the cadence slow.
This works both your core and lower back. Start in the forearm plank position, making sure your shoulders are aligned with your elbows and your pelvis is tucked under. Raise your left knee and bring it towards your left elbow. Do the same with your right knee. If you’re not quite there with your fitness, work up to it with a regular plank.
Finally, remember that one of the most important parts of these exercises is to curl the corners of your mouth up when it gets hard. Smiling makes it easier.
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