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Frequently Asked Questions

  • How does it work?

  • How does it work?

    CadenceX consists of two pieces. The Generator attaches to the fork of your current bike and touches the rim. When your wheel spins, the side of the rim spins the Generator to create electricity. This electricity is sent up a cable to the second part of the device: the Smart Power Hub with two USB-C charging ports. The Smart Power Hub also uses our patented supercapacitor technology to stabilize and temporarily store the power coming from the Generator. If you speed up, slow down, or even stop for as long as 30 seconds the power hub will use its smart energy cache to provide power to your devices.

    TLDR: Unlimited Power!

  • Can CadenceX work on anything besides bicycles?

    CadenceX’s electronics and generator can be used on any rotating surface with proper mounting and alignment. PedalCell’s warranty only applies to bicycle mounting. Our support team is equipped to only help with bicycle-related questions.

  • Installation

    Questions relating to the Installation of CadenceX

  • How long will the O-Ring last?

    PedalCell’s CadenceX O-ring is custom-specced to balance performance with long-term durability. It is recommended to swap every ~2,000 miles. Additional O-Rings can be bought separately or included in the Ultimate Bundle on the PedalCell store.

  • Can CadenceX mount in the rear?

    CadenceX supports mounting on the rear rim via the chainstays of some Tadpole Trikes and bicycles. Those directions can be seen here.

  • How does it work?

    CadenceX consists of two pieces. The Generator attaches to the fork of your current bike and touches the rim. When your wheel spins, the side of the rim spins the Generator to create electricity. This electricity is sent up a cable to the second part of the device: the Smart Power Hub with two USB-C charging ports. The Smart Power Hub also uses our patented supercapacitor technology to stabilize and temporarily store the power coming from the Generator. If you speed up, slow down, or even stop for as long as 30 seconds the power hub will use its smart energy cache to provide power to your devices.

    TLDR: Unlimited Power!

  • Is my bicycle (or trike) compatible with CadenceX?

    CadenceX is compatible with the majority of bicycles and delta trikes with front forks equal to or smaller than a 1″ X 2″ oval.As a rule of thumb, we do not recommend CadenceX be mounted on extreme road/aero/competition bikes or heavy suspension mountain bikes due to their unusual/large fork geometries. In addition, we do not recommend mounting with carbon rims due to their limited heat dissipation and willingness to handle force on the rim face.

    CadenceX also supports mounting on the chainstays of some Tadpole Trikes and bicycles. Those directions can be seen here.

  • How much space does my rim need?

    CadenceX can work on most non-carbon rims, including those that do not have braking surfaces. CadenceX’s O-Ring needs approximately 4.7mm of contact area on a rim. This is about <1/2 the surface area needed by most rim brake pads.

  • I know you said that you don't support XX (carbon rim, suspension etc.) mounting on my bike but it looks like CadenceX can fit. Can I still try to mount CadenceX there?

    We designed CadenceX to work reliably in its original mounting location on the front fork of most bike designs and select the rear chainstays. Mounting on any non-supported locations/bikes/trikes can cause unintended performance, durability, and other issues with your product (and will void your warranty). We can’t stop you from using CadenceX how you see fit, but understand that we only officially support CadenceX’s intended mounting locations!

  • Why is CadenceX mounted on the rim instead of the hub?

    We chose the rim for three primary reasons over a bicycle hub:

    • Power Output: The outside of a bicycle rim spins monumentally faster than the inside hub. Thus, our generator spins at higher RPMs, making it more efficient and creating more power in a compact package. While some dynamos have attempted to generate more power on the hub, the trade-offs in complexitiy, cost, and weight are extremally high. Thus, we chose the rim as the least path of resistance (no pun intended )
    • Installation: CadenceX can be installed or uninstalled in minutes on most bicycle designs. Dynamo hubs, on the other had, require time intensive wheel builds that are difficult to construct. Moreover, hubs are only compatible with certain wheel setups, making their cross-compatibility limited if you decide to switch between bicycles or rim types.
    • Decoupling: We believe that you should have the option to completely deactivite our product if you prefer. Mounting on the rim allows users to mechanically decouple our generator from the rim, thus eliminating all drag. Hub-mounted dynamos require intensive disassemly procedures to remove, making their mechanical drag a permanement burden for most riders.

  • Does my wheel need to spin exactly true?

    No, CadenceX’s torsion spring adjusts the generator’s position to maintain optimal contact on rims that do not spin exactly true.

  • Compatibility

    CadenceX Mounting and Charging Compatibility Questions

  • How long will the O-Ring last?

    PedalCell’s CadenceX O-ring is custom-specced to balance performance with long-term durability. It is recommended to swap every ~2,000 miles. Additional O-Rings can be bought separately or included in the Ultimate Bundle on the PedalCell store.

  • Can CadenceX mount in the rear?

    CadenceX supports mounting on the rear rim via the chainstays of some Tadpole Trikes and bicycles. Those directions can be seen here.

  • How does CadenceX work in slippery conditions (rain, snow, mud, etc.)?

    Power dropouts from rim debris are rare and go unnoticed with CadenceX thanks to our clever mechanical and electrical design. Our Generator’s spring and o-ring are spec’d to maintain grip in wet conditions as well as operate around debris. In the case of lost power, CadenceX’s Patented Supercapacitor Electronics operates as a backup to supplement charge until contact is made.

  • What types of cables should I use?

    Use the USB cable provided with your device for best performance. CadenceX includes a USB A-C adapter in the box for devices that do not have a Type-C cable. We also sell low-profile USB cables with UV/splash resistance on our store for a more tangle-free experience.

  • Is my bicycle (or trike) compatible with CadenceX?

    CadenceX is compatible with the majority of bicycles and delta trikes with front forks equal to or smaller than a 1″ X 2″ oval.As a rule of thumb, we do not recommend CadenceX be mounted on extreme road/aero/competition bikes or heavy suspension mountain bikes due to their unusual/large fork geometries. In addition, we do not recommend mounting with carbon rims due to their limited heat dissipation and willingness to handle force on the rim face.

    CadenceX also supports mounting on the chainstays of some Tadpole Trikes and bicycles. Those directions can be seen here.

  • How much space does my rim need?

    CadenceX can work on most non-carbon rims, including those that do not have braking surfaces. CadenceX’s O-Ring needs approximately 4.7mm of contact area on a rim. This is about <1/2 the surface area needed by most rim brake pads.

  • Does CadenceX work with panniers?

    Yes! See below for CadenceX mounting on a Trek 520 with attached panniers.

  • Why is CadenceX mounted on the rim instead of the hub?

    We chose the rim for three primary reasons over a bicycle hub:

    • Power Output: The outside of a bicycle rim spins monumentally faster than the inside hub. Thus, our generator spins at higher RPMs, making it more efficient and creating more power in a compact package. While some dynamos have attempted to generate more power on the hub, the trade-offs in complexitiy, cost, and weight are extremally high. Thus, we chose the rim as the least path of resistance (no pun intended )
    • Installation: CadenceX can be installed or uninstalled in minutes on most bicycle designs. Dynamo hubs, on the other had, require time intensive wheel builds that are difficult to construct. Moreover, hubs are only compatible with certain wheel setups, making their cross-compatibility limited if you decide to switch between bicycles or rim types.
    • Decoupling: We believe that you should have the option to completely deactivite our product if you prefer. Mounting on the rim allows users to mechanically decouple our generator from the rim, thus eliminating all drag. Hub-mounted dynamos require intensive disassemly procedures to remove, making their mechanical drag a permanement burden for most riders.

  • Does my wheel need to spin exactly true?

    No, CadenceX’s torsion spring adjusts the generator’s position to maintain optimal contact on rims that do not spin exactly true.

  • Performance/Technology

    Questions relating to the Performance and Technology behind CadenceX

  • How long will the O-Ring last?

    PedalCell’s CadenceX O-ring is custom-specced to balance performance with long-term durability. It is recommended to swap every ~2,000 miles. Additional O-Rings can be bought separately or included in the Ultimate Bundle on the PedalCell store.

  • How does CadenceX work in slippery conditions (rain, snow, mud, etc.)?

    Power dropouts from rim debris are rare and go unnoticed with CadenceX thanks to our clever mechanical and electrical design. Our Generator’s spring and o-ring are spec’d to maintain grip in wet conditions as well as operate around debris. In the case of lost power, CadenceX’s Patented Supercapacitor Electronics operates as a backup to supplement charge until contact is made.

  • Is CadenceX's power and efficiency data public?
  • How does CadenceX achieve high power and efficiency compared to dynamo hubs?

    CadenceX is a clean-sheet design. While it may have exterior similarities to a traditional bottle dynamo, it does not share any of its components with any dynamo. Unlike bicycle dynamos, its Generator, patented Supercapacitor Electronics, and Proprietary Firmware were custom-made to work together from the get-go. Our engineering team spent over half-a-decade packaging each of these components into an easy-to-use product for our users.

    The result: 15-20W peak power with a 70% peak mechanical-to-USB output efficiency.

    Don’t believe us? See this announcement and here for raw data.

  • Is CadenceX weather-resistant?

    CadenceX was tested in wet conditions to survive the outdoors as “weather-resistant”. Weather resistance means that our product can handle rain, sleet, snow, etc. without getting damaged. We’ve tested our device under heavy water to verify this claim (our electronics are completely potted to protect against water ingress). However, there are a few notes that we ask customers to keep in mind:

    • Riders must prevent liquid from being in the Smart Power Hub’s ports while powered-on. While water will not enter the device, the liquid can corrode the port’s pins while the device is powered on. Our rubber USB-C plugs prevent usually prevent this from happening, however, a simple shake of the Power Hub can get water to leave. As a general rule of thumb, do not allow water to enter the USB port.
    • We encourage riders to stay mindful while using their electronics (such as your smartphone or lights) during inclimiate conditions.
    • It is worth noting that while CadenceX‘s electronics are able to smooth out most generator fluctations experienced from slippery rims, use in extremely wet/slippery conditions can impact performance.

  • Does CadenceX require maintenance?

    We recommend the replacement of the O-Ring (sold in store) every 2,000 miles. Riders should pay attention to CadenceX‘s contact on the bicycle rim before and after every ride to ensure that the device is properly aligned. We recommend re-tightening/adjusting the front fork clamp at least once a month (or more if ridden heavily) to maintain ideal performance.

  • What is CadenceX's warranty?

    Every CadenceX comes with a limited 2-year warranty and lifetime email support. PedalCell’s warranty covers defects and product failure within intended use. Customers can contact us at info@pedalcell.com at all times both in and outside the warranty period with any questions. Read more in our Terms of Use.

  • Why is CadenceX mounted on the rim instead of the hub?

    We chose the rim for three primary reasons over a bicycle hub:

    • Power Output: The outside of a bicycle rim spins monumentally faster than the inside hub. Thus, our generator spins at higher RPMs, making it more efficient and creating more power in a compact package. While some dynamos have attempted to generate more power on the hub, the trade-offs in complexitiy, cost, and weight are extremally high. Thus, we chose the rim as the least path of resistance (no pun intended )
    • Installation: CadenceX can be installed or uninstalled in minutes on most bicycle designs. Dynamo hubs, on the other had, require time intensive wheel builds that are difficult to construct. Moreover, hubs are only compatible with certain wheel setups, making their cross-compatibility limited if you decide to switch between bicycles or rim types.
    • Decoupling: We believe that you should have the option to completely deactivite our product if you prefer. Mounting on the rim allows users to mechanically decouple our generator from the rim, thus eliminating all drag. Hub-mounted dynamos require intensive disassemly procedures to remove, making their mechanical drag a permanement burden for most riders.

  • Is CadenceX theft-resistant?

    The included hex bolts should deter most thieves from stealing your CadenceX (no more difficult to steal than your caliper brakes or handlebars). However, we do sell a security bolt and screwdriver kit in our store for riders that want extra piece of mind when parking their bicycle outdoors for extended periods. This kit is included with our Ultimate Bundles.

  • What can I power with CadenceX?

    CadenceX uses USB-C ports which is backwards compatible with most USB devices and supports the plethora of current and future USB-C devices. Examples include bike lights, smartphones, GPS navigators, electronic shifters, cameras, and more.

  • How much does CadenceX weigh?

    CadenceX weighs approximately 1 lb.

  • Can CadenceX power devices while stopped?

    CadenceX low-power port (3W output) is prioritized over the high-power port. Thus, lights and other USB devices plugged into the low power port stay powered for up to 30 seconds when stopped depending on their power draw and riding behavior. It is worth noting that most USB devices have built-in rechargeable batteries, allowing them to stay powered for many hours when stopped. We recommend riders who need long-term charging when stopped/off their bike use CadenceX to charge a small external battery (~5000 mAh).

  • Is CadenceX a battery?

    CadenceX is not a battery. Batteries are great for storing power long-term but are not the best solution for real-time power generation on bicycles. We chose to incorporate supercapacitors over batteries in our product due to their advantages of.
    1) Higher charge/discharge efficiency
    2) 10X longer lifespan
    3) Wider outdoor temperature ranges
    4) Safety for volaitle power
    Riders who require long-term storage can charge USB battery packs with CadenceX.

  • How much drag does CadenceX add?

    As with any bicycle generator, CadenceX does add drag. While there is no such thing as free power, we designed multiple features within CadenceX‘s to ensure noticeable drag is minimal to non-existent to users.

    1) High-Efficiency: CadenceX’s mechanical-to-electrical USB output is validated by a 3rd party to have a class-leading peak efficiency of 70%. Read more about these tests here.

    2) Mechanical advantage: CadenceX has a mechanical advantage of its rim location vs the hub location of other generators (think of the perceived effort associated with opening a door on hinge vs handle).

    3) Dynamic output: CadenceX’s only provides the power your devices need. For example, if your phone is almost fully charged with the screen off, our product will output a smaller amount of power.

    4) 3W lock: CadenceX’s Prioritized port locks max output at 3W for power-conscious riders.

    5) Speed-based Output: We dynamically adjust our power at different speeds. For example, we don’t deliver 20W at 8 km/h. This curve lowers the chance of noticeable drag.

    6) Mechanical decoupling: We provide users the flexibility to completely disconnect CadenceX from the rim when not needed, thus eliminating all mechanical drag.

  • Does CadenceX store power?

    CadenceX utilizes our patented supercapacitor technology as energy storage to maintain power output during speed modulations, unideal conditions (such as heavy downpour or in dirt), and to devices plugged into the low power port while stopped for up to 30 seconds at a time.

  • I did the math, you can only output a 15W max from your USBs. Where does the other power go?

    Good question! In addition to the USBs themselves, CadenceX uses the additional generator power headroom to intelligently power its patented supercapacitor technology. Also, as a rule of thumb, we always leave more power on the table to account for efficiency losses and for use in less-than-ideal conditions.

  • Can CadenceX be used on an electric bicycle (eBike)? How about charging my eBike battery?

    Yes, CadenceX can be used to charge USB devices on any eBike that is compatible with CadenceX‘s install criteria. However, CadenceX is not made to charge an eBike’s battery.

  • Purchasing/Support

    Questions relating to PedalCell Purchasing and Support

  • What is CadenceX's warranty?

    Every CadenceX comes with a limited 2-year warranty and lifetime email support. PedalCell’s warranty covers defects and product failure within intended use. Customers can contact us at info@pedalcell.com at all times both in and outside the warranty period with any questions. Read more in our Terms of Use.

  • Where can I buy CadenceX?

    If you are a consumer, visit our storeIf you represent a company or distributor, please fill out the form above.

  • How much does CadenceX cost?

    CadenceX is priced at $299.99. We also offer the Ultimate CadenceX bundle which includes our whole accessories catalog for $399.99 MSRP but can be ordered $50 off here. To inquire about our distributor pricing catalog, please reach out to us on this form.