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  1. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Yes, it is more of Pure White as opposed to cream color. Local dealers and several customers indicated that they prefer white over cream color. The color shown below is on Photon Pure but the Pro version would also have the same pure white option.
  2. Ravi Kempaiah

    Bafang BBS-02/HD vs M600 vs M620 (Ultra)

    I hope someone here with experience can share a detailed report with pictures on the differences between the legacy drive system from Bafang, like BBS-02/HD, with the latest M640 (Ultra) and M600 motors. This will help forum readers benefit from the collective knowledge of more experienced...
  3. Ravi Kempaiah

    AVOID UPP BATTERY UK government slaps a ban on 'dangerous' e-bike battery which was sold on Amazon and linked to fires

    It is really unfortunate because these fires can be avoided easily with the right kind of batteries. This should be posted under the Guides and Announcements section so people are aware of them. We need to be serious about these so no more lives are lost (like how we have seen in NYC) !
  4. Ravi Kempaiah

    Help choosing an air fork

    Most fat tire suspensions you find in the $2.5K range are mostly coil springs with poor-quality seals and stanchions. We found them inadequate to handle winters in Canada with salt on the road. We built some bikes with RST Guide, Zoom, and other forks and found within 1 winter, they were...
  5. Ravi Kempaiah

    Custom Carbon Wheels

    Rod Bikes in Seattle have an excellent reputation: https://www.rodbikes.com/index.html
  6. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Following the production of Photon Pro, the Photon Pure bikes were assembled. We will be share pictures of the Photon Pro next week. PS: that purple color bike was a custom bike for an investor. She really wanted a unique color and if there is enough interest in such colors for female riders...
  7. Ravi Kempaiah

    Zen Photon Pure | 780Wh battery (Upgradable1040 Wh UL 2271 battery) | 750W(USA) 500W(CAN) hub motor w/ Torque sensor & Throttle | USD 2099 | CAD 2599

    Photon Pure production has been completed. These bike frames will arrive in Canada sometime in 3rd week of March, and the final QC and battery assembly will happen here.
  8. Ravi Kempaiah

    This is not good, and its my fault

    Count your blessings that it did not happen when you were riding downhill or riding behind a truck or car!
  9. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    As promised, the photoshoot has been completed. We will get official photographs in a few days, but one can get a sneak peek here. We think the lime Green color looks fantastic on Photon Pro.
  10. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Yes, we will build that feature into our App. That is the right way to do it. A phone App that displays temperature, SoC, SoH, drive cycle, errors, etc. This requires a smart BMS that can communicate via 4G with the App and all of this requires significant work and testing.
  11. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    The Photon Pro and Ultra frames are currently in production, and the images can be seen here. The frame has aesthetically pleasing decals and subtle designs. The media samples are ready, and we will receive the photos early next week.
  12. Ravi Kempaiah

    Electric Car thread

    Does anyone here own a Mitsubishi Outlander PHEV? We are looking at one for our family because it has more range than the RAV4 Prime, and supposedly, the AWD is perfect for Canadian weather.
  13. Ravi Kempaiah

    NYT article on ebike battery fires

    You don't need to be charging to get these cells going! Fast discharge, shoddy electronics in the BMS, and complex discharge in cold climates can trigger adverse reactions and this will snowball into thermal runaway if there are no safety measures in place within the pack. We have taken apart...
  14. Ravi Kempaiah

    NYT article on ebike battery fires

    People underestimate the value of properly engineered batteries until something tragic happens. An E-bike battery led to a fire in a Toronto sub-way car and incidents like this should be taken seriously. I hope more OEMs and end users realize how important it is to select high-quality batteries...
  15. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Hi Taylor, It is $2999 (USD) shipped to Palm Springs, CA - customers who pre-order by Jan 31st get this at $2999. The prices are expected to increase after that date.
  16. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    We will walk you through the Photon pro display and how we have implemented the smart charging functionality. This is the default display screen. You enter the settings menu by pressing the + and - button simultaneously. Under Advanced Settings, you see BAT MODE (short form for Battery...
  17. Ravi Kempaiah

    Yamaha charging $2475.00 for a battery

    If there is enough interest in these batteries, we will work on this and make replacement batteries available. There is a growing need for quality batteries that don't cost an arm and leg, and having UL certification should not mean it should cost $1500, either.
  18. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    Thanks. We have already updated it. We had to work with several electronic vendors to make it happen - display, controller, BMS supplier etc. and the image shown here is from our design prototype.
  19. Ravi Kempaiah

    2024 - Our Rides in Words, Photos, Maps and Videos

    Thanks for sharing your excellent report and looks like you are an outlier because -20'C is quite cold even for experienced riders.
  20. Ravi Kempaiah

    Zen Photon Pro- Preorder | 1040Wh UL Certified battery | 500W nominal/900W peak power Torque-sensing motor w/ Throttle | USD 2999 | CAD 3999

    The BMS has smart charging features; without going into boring technical details, we designed the BMS and the battery pack to have several safety features and UL 2271 certification, and built-in charging protocol for two different modes. Long-life mode, where it charges to 80% and balances the...
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