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BERD PolyLight Spokes – The Future of Cycling










Weight Data Strength Data



PolyLight spokes are significantly lighter than the lightest high-end spokes available. Despite their incredibly low weight, PolyLight spokes are also extremely strong. In fact, they are stronger than most spokes on the market today






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BERD PolyLight Spoke Composition



closeup of spoke

Hover over circles to see properties






Maintenance info

Berd PolyLight spokes are compatible with all standard hub and rim connections, so they can be built into any wheelset. Further, they can be trued and maintained in the same way as steel spokes.






Vibration

PolyLight spokes significantly improve the damping of road vibrations, which makes for a noticeably smoother ride and reduces rider fatigue. Now you can rider faster and farther!






fatigue logo

Fatigue is a process by which materials fail over time when subject to changing loads. Metal spokes have a finite fatigue life in bicycle wheels because of the changing load from the wheel spinning and from hitting bumps in the road. PolyLight spokes are less suseptible to this type of failure due to the superior properties of the polymer from which they are made.






Moisture, UV, other symbols

Strength and weight are not everything. PolyLight Spokes are also designed to take anything you can throw at them. They are impervious to UV exposure and moisture and resistant to general wear and tear and impact.





Frequently Asked Questions:



What types of hubs do Berd spokes work with?

Berd spokes work with all J-bend hubs, all standard tangential straight pull hubs, and some radial straight pull hubs.



What types of rims do Berd spokes work with?

Berd spokes work with all standard bicycle rims, including rims designed for both external and internal nipples.



Can I purchase Berd spokes from my local bicycle shop?

Yes. If the bicycle shop is not already a dealer, please ask them to submit a dealer application.



Can I race with Berd Spokes?

Yes! Berd spokes are legal for racing. In fact, the UCI, which regulates professional cycling, has specifically approved Berd spokes, so you can race Berd spokes from local crits to the Tour de France. Send us a postcard!



Do Berd spokes come in other colors?

Berd spokes only come in white. White is the natural color of the material.



How much weight will I save over metal spokes?

Depending on the wheelset, weight savings with Berd spokes range from 100 to 200 g.



Are Berd spokes the same length as metal spokes for any given wheel?

No. Berd spoke lengths are slightly different than metal spoke lengths to account for the hub connection and the initial stretch of the spokes when building. Our spoke calculator must be used to calculate the proper length.



Berd Spokes are flexible, so how can you make a wheel out of them?

To answer that question, we need to discuss how wheels are built. Each spoke in a wheel is pulled in tension during the wheel building process – in fact, each spoke is under ~50 - 100 kgf, depending on the particular wheel build. When riding the bike, spokes at the bottom of the wheel de-tension to support the weight of the rider, but because they are pretensioned, they never leave tensile loading. Because of this, flexible spokes function equivalently to metal spokes.



Does my hub need to be modified to work with Berd spokes?

For tangential straight pull hubs, no modification is necessary. A specially-designed insert protects the spoke head from sharp corners in the hub holes. For classic and radial straight pull hubs, sharp corners must be removed from the hub holes prior to lacing using tools that Berd supplies.



How do Berd spokes connect to the hub?

The eye of the spoke is pulled through the hub hole and secured with a small rod.



How do Berd spokes connect to the rim?

Berd spokes connect to the rim using standard 14 gauge nipples.



What type of nipple should I use with Berd spokes?

We highly recommend using double square locking nipples because they can be trued from the back of the rim, have additional thread engagement, and prevent loosening of the nipples over time. If using a rim that requires internal nipples, we recommend locking internal nipples.



How do you prevent Berd spokes from twisting while truing?

Berd spokes have a flat section near the end of the spoke that is held with a special tool while truing. This is very similar to the way in which bladed metal spokes are held.



Berd Spokes are protected by US Patent # 10,150,332


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