Pi rope

Moderator: robbosmans. Post by FlatlandClimber on Mon Feb 06, am. Post by apr46 on Mon Feb 06, pm.

The world of cycling is dominated by three materials: steel, aluminum, and carbon fiber, which feature unique properties that make them excel in their specific applications. However, by thinking out of the box there could be other materials that feature enhanced performance, as was the case of ceramics for reduced-friction bearings. With this, he intended to provide a new product based on technological benefits that would lead to improved functionality, from weight to riding feeling, for cycling wheels. Not long after, thanks to the cooperation with Newmen Components and a dedicated process of constant self-improvement, they finally commercially launched their first products in Nowadays, the brand offers a selection of different spokes, hubs, and full wheelsets for different cycling disciplines including road, gravel, and MTB. These represent featherweight wheels with self-damping capacity and similar properties in terms of stiffness, braking load, resilience, aerodynamics, and wear to the commonly used steel. On their own, these fibers have similar strengths to steel.

Pi rope

German-made Pi Rope showed us yet another example of superlight XC wheels built up with textile fiber spokes, and gave us the lowdown of why they actually outperform traditional steel spokes. In fact, these polyester fiber spokes made by Pi Rope are actually already available. And Pi Rope can build them up into a XC wheelset as light as g. Quickly looking at the difference from these Pi Rope fiber spokes to those Berd ones found on the Tune wheels. They were a bit tight-lipped on exactly how the connection is made, but confirmed that it is a two-piece joint with one part inserted into the end of the hollow spoke, which then compresses into the nipple with its external male threads. In the end the spoke is held in the nipple both mechanically and with an adhesive. To make that work Pi Rope has a development partnership with German wheel maker Newmen who supplies quality rims and hubs designed to accommodate the unique thread in nipples. That is mostly to keep things simple as they establish their production capabilities relative to demand. To eliminate any twisting or wind-up of the spokes, the wheels are built by initially threading the flexible textile spoke into the hub shell. Then the wheel builder inserts the nipple into the rim, and holds it fixed in place while they tighten a nut onto the end of the nipple through the rim. The result is no spoke twist, but it also limits the ease of adjusting the wheel with a tire mounted. Essentially the Vectran spokes can withstand up to kN vs. With that in mind Pi Rope can lace and tension a textile spoked wheel with stiffness in mind, leaving plenty of extra spoke strength in reserve. Now with the textile fiber spoke, that extreme impact force still happens entirely within the elastic range of spoke elongation, so even under a big impact the textile spoke will rebound to its original length. That means less need for wheel truing, especially when built up with a carbon rim that can move more elastically as well.

Now for a spoke, strength is needed due to cycles fatiguebut again stiffness will come from young modulus and this is the key. More companies should jump on board in this direction. Oldest Newest Most Voted, pi rope.

.

The world of cycling is dominated by three materials: steel, aluminum, and carbon fiber, which feature unique properties that make them excel in their specific applications. However, by thinking out of the box there could be other materials that feature enhanced performance, as was the case of ceramics for reduced-friction bearings. With this, he intended to provide a new product based on technological benefits that would lead to improved functionality, from weight to riding feeling, for cycling wheels. Not long after, thanks to the cooperation with Newmen Components and a dedicated process of constant self-improvement, they finally commercially launched their first products in Nowadays, the brand offers a selection of different spokes, hubs, and full wheelsets for different cycling disciplines including road, gravel, and MTB. These represent featherweight wheels with self-damping capacity and similar properties in terms of stiffness, braking load, resilience, aerodynamics, and wear to the commonly used steel.

Pi rope

Log in. Sign up. Jump to Latest Follow. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. Joined Feb 18, This is a pi rope spoke The guys told me not to worry about the spoke Eventually to put some adhesive But i used their product.

Nosh and grog

They have been really robust wheels, ive hit some stuff and seen other people crack rims on that same stuff and I think the higher elasticity of the spokes might have saved my wheels. Weight Weenies Forum Skip to content. Robin, indeed you are correct. Then the wheel builder inserts the nipple into the rim, and holds it fixed in place while they tighten a nut onto the end of the nipple through the rim. I like the berd system better. The only significant spokendofferences have been the carbon fiber ones lightweight, Mavic CCu or tubular ones Mavic or Corina Mcc. Overall weight and price is good. Reply to comrad. That is mostly to keep things simple as they establish their production capabilities relative to demand. Stronger is a loosely defined term, but the only context in which I can imagine it being true is if these spokes have greater elasticity, then they may be in a more stretched position when fully tensioned, and therefore may resist a complete loss of tension better when under extreme load scenarios. Privacy Terms. Unidentified wheel characteristics? Learn how your comment data is processed. Follow Us On. Learn More.

Log in. Sign up.

Then we mounted the discs centerlock and tires and went straight to the woods to test them. That is mostly to keep things simple as they establish their production capabilities relative to demand. Reply to JBikes. Its a direct equivalent to a spring rate. After riding on various surfaces tarmac, dirt, loose gravel we were surprised by how stiff they were, which was noticeable when doing a small acceleration transmitting all the force with only a small effort. Post by apr46 on Mon Feb 06, pm I have two sets of wheels with Berd spokes that are used for gravel and i really like them. Quick links. This results in a wheel that can be easily accelerated and is ideal for climbing without sacrificing the functionality of the impeller once the wheel is turning. I like the berd system better. Selling bike products in seems to be coming up with the right combination of some brand image, maybe a technological gimmick, and plenty of marketing. We had the opportunity to test the R. Could be the hub geometry… but after 15 years they would have volves it no? Does anyone have deeper information or experience about the hubs? They go with your hemp bracelets and necklace to booth. Yes the young modolus is the most necessary thing.