Sandvik T302 (18/10)
Pillar cold drawn technology.Double butted with three Blade options.Up to 30% weight saving without compromising strength.
Rolled (BC 56, DIN 79012)FG 2.3
According above datas and our client feedback, we find the PBA 1420 spokes are strong enough, and the weight is lightest, comparing to PBA 1425 spokes and PBA 1422 spokes. So we choose PBA 1420 spokes for wheelsets currently.
Pillar psr x-tra 1420 spoke VS CN Aero424 spoke
We have do some research on pillar 1420 spokes and CN 424 spoke these weeks. Both pillar 1420 spokes and CN 424 spokes are light, around 4.0g/pcs to 4.3g/pcs. But CN 424 spokes are much thinner and much cheaper（the price is only half of pillar 1420 spoke) , we have got some to test and if the spokes are ok, we can use it and make the wheelset price lower for customers. But while we build one wheelset, two pieces CN 424 spokes are broken.
So, we decide not to use CN 424 spokes, still use pillar 1420 spokes. For pillar psr-xtra 1420 spokes,there are detail testing data on Pillar Spoke website like breaking strength, spoke tension breaking strength & spoke tension. But for CN 424 spokes, the data is not clear on CN Spoke website.
Pillar PSR X-TRA 1420 spokes are really better than CN Aero424 spokes.
We will keep on looking for better spokes with good price for customers,like DT super comp and Sapim CX-ray spokes. Sapim spokes are much expensive than pillar spokes, and we will try to contact the agent to get better price.
What is the difference for 3k, UD and 12k ?
The main type of carbon fiber used for the manufacture of bicycle parts are normal tow (under 12000 fibers) carbon fiber, like T700, or commonly known as 3k, 12k weave, and UD(uni-direction) carbon fiber.
carbon rim 3k 12k ud
carbon fiber weave 3k
carbon fiber weave 12k
carbon fiber weave UD
Bicycle components, specifically carbon frames & rims are made using various grades of carbon fiber characterized mainly by their tensile strength and tensile modulus. Tensile strength is the amount of force needed to cause the fibers to break, while the tensile modulus is a measure of the carbon fiber's stiffness.
The cost of carbon fiber goes up with the increase in tensile strength, or increase in tensile modulus. And for carbon fiber weave also determines the cost of material with larger weave prepreg (eg.12k) costing less, due to the lower cost of manufacturing.
Carbon fiber layer(prepreg) has maximum strength only along the lengths of the fibers. That is why almost all the inside prepreg are using uni-directional carbon fiber while making carbon rims & frames. But the inside layup charts are still not identical. For example, the orientation are different( some are placed at 0 degree, some are 45 degree, 90 degree). This is very important to make carbon rims & frames with good strength & performance. That is also why using uni-directional fiber instead of woven carbon fiber (eg. 3k, 12k) creates stronger frames & rims.
Thus, the main use of woven carbon fiber is for appearance. But there is one mechanical benefit for 3k woven carbon fiber. Putting the 3k woven carbon fiber around hole area, it can prevent carbon fiber from laminating while machining holes.
For the weight difference, woven fiber has some area pass across each other. So, woven fiber is heavier than UD fiber. But, for rims, the size of carbon fiber is not large and only one layer different, the weight difference of woven fiber (3k &12k) and UD fiber is not big. Also, all rims have a weight range, for rims, it is +/-15g. So, sometimes, 3k rims & frames are lighter than UD.
For big size product (like frame), 3k frame will be heavier than UD. And for 12k, the weight different is not much difference.
carbon rim weave 3k matte
carbon rim weave 12k matte
carbon rim weave UD matte
For more clear pictures of weave 3K 12K UD , please click this link:http://www.flickr.com/photos/light-bicycle/sets/72157631432948364/detail/
People from all walks of lives who love adventures will surely love to have fun with mountain bikes. They will certainly be in high spirits to buy a mountain bike for their own riding through the muddy rough trails.
It'said that mountain bikes are more than just an applied science. It gives an experience that is even more than just a work of art lived for. It is the burning passion that fuels the men to have biking at its best.
Though mountain bikes are expensive to afford still you can have an alternative option of buying a relatively less costly one. For the amateur riders, the normal local mountain bikes are highly recommended. Good thing to know that it can be purchased at relatively lower costs.
Even if it is consider a risky sport, if done with utmost caution, mountain biking can be enjoyed by the whole family. Mountain bikes are a great way to get outdoors and experience nature. You may also discover great new biking trails and enjoy the company of family and friends at the same time.
To have a better choice and in order to find the best bike that will suit you try to go to the local shops for a quality purchase. First you move to the small shops. Have some queries about the local bikes available. Search for the potential ones. You also confirm that your bikes are lighter so that you can easily move with them. Then you go out for a test drive. Go to the high hills, on the rough trails. Check out for the instruments qualities and instant services.
A good biker should keep different warnings in mind especially when you go biking on your mountain bike. First of all you should warm yourself up as you begin biking. Don't forget to wear a helmet for your safety in case of any accident. It must be the priority of all bikers. You should also use standing in discretion as it provides more energy and effectiveness.
Drop by our shop and hold carbon bicycle parts (a carbon handlebars, seatpost or fork, or better, lift one of our full-carbon dream machines), and you'll be startled at how little they weigh. The real surprise, though, comes on rides, when the featherweight and beautiful miracle material transfers more of your effort to the ground, dazzling you with acceleration, climbing, control and even comfort, superior to anything you've pedaled before.
Carbon fiber is so light and tough that Boeing picked it for their 787 "Dreamliner" jet. It's over 80% carbon, including the fuselage, which seats 300-plus passengers. And, perhaps the ultimate carbon creation ever, is the 197-foot-wide wing. With the Dreamliner's 360,000-pound takeoff weight and Mach 0.85 cruising speed, this amazing and gossamer carbon structure must withstand a lift force of some 450,000 pounds.
Yet, even with incredible strength and toughness like this, with a single indiscriminate act like clamping your carbon wonder wrong in your repair stand, over torquing with an Allen wrench, or letting the handlebars swing around and smash into the top tube, you can do some serious damage.
It's possible because carbon has very different qualities than steel, aluminum and titanium, which you've probably ridden before. Unlike these metals, carbon is a synthetic composite material comprised of fibers soaked in epoxy resin and then compressed, heated and cured. Essentially, your carbon jewel is made up of a super-strong fabric, which requires a little new know-how on your part. The foremost being that while metal shows signs of damage, typically bends, dents or bulges, carbon may appear normal, yet, if compromised enough, even though you can't see the defect, the component could fail without warning. Another issue is notch sensitivity, which means that deep cuts, gouges or scratches can cause carbon to break and should be inspected by a pro immediately (and avoided!).
Now that we've got your attention, there's really no reason for concern as long as you treat your carbon gear correctly. To help, we asked our mechanics for their best tips, picked the brains of every industry carbon guru we know, and culled information from the major carbon bike and component leaders' websites to bring you this guide to caring for and maintaining your carbon bicycles and components.
Reading, understanding and following the guidelines, instructions and recommendations here will greatly increase the chances that you never have any problems. And, if you ever have a question or are unsure how to proceed, please contact us first, and we'll be happy to help!
There's a lot to know about carbon and many insider tips and tricks. So, for easy navigation, we've organized our guide into sections covering the issues, and tips for the individual components of a bicycle, too — frame, fork, handlebars, seatposts, etc. Use the links below to quickly jump to any section. First, be sure to read the Basic Carbon Care section as it explains things pertinent to all carbon bicycles and components.