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  1. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    Hi, I just returned to Canada from an extended trip to Asia. I am just catching up on all emails. Re: Rohloff variations, please take a look here - https://www.rohloff.de/en/products/speedhub/speedhub-variations Basically, the hub internals are the same, and they are all rated for 130Nm, but...
  2. 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 original estimate for the vessel's arrival in Canada was the third week of March. However, there are many reports that terrorist attacks on commercial ships in the Red Sea and Indian Ocean have caused congestion at other ports. So, we are now expecting the vessel to arrive in the fourth week...
  3. Ravi Kempaiah

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

    Of course, The Photon Ultra is available, and this bike is mostly desired by people who have done sufficient research and are willing to pay a premium for the Rohloff hub. So, the Ultra is available in limited quantities. It does come with a kickstand and integrated front and rear lights.
  4. Ravi Kempaiah

    Evelo Omega vs Zen Photon Pro for next E Bike

    Rohloff has a gear range of 526%, which is quite high and enables climbing very steep hills. You can find the gear ratios here: https://www.rohloff.de/en/service/handbook/speedhub/technical-data
  5. Ravi Kempaiah

    The Big Crunch is Coming

    Thanks for sharing facts from credible sources! Every major brand is suffering in one way or another. It is only the resolute and truly dedicated to the art that will survive the tough year ahead.
  6. Ravi Kempaiah

    Where to find the battery rubber plug cap of Reention batteries?

    We have half a dozen of these for Reention IR-5,7, plus models and we are located in Atlantic Canada if you are local.
  7. Ravi Kempaiah

    Exploring Zen Electric Bikes' Advanced Battery Technology

    For the past few weeks, I have been traveling, meeting cell companies like Samsung and LG, and battery production equipment companies. Apolgies if my email response has been slow. We are developing safer E-bike batteries with advanced technologies like wire-bonding and thermal management...
  8. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    Thanks for your excellent suggestion and contribution. I wish Bafang realized the quantum of work enthusiastic riders like yourself have put in.
  9. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    I don't have enough data on the durability of the Enviolo Heavy Duty hub with Bafang M620. There is enough data on the reliability of Rohloff under high-powred mid-drive systems - [Optibike, Nicolai, Utah Trikes] I don't think the servo motor in the Enviolo Automtiq shifter would be able to...
  10. Ravi Kempaiah

    Enviolo or Rohloff?

    Stefan, We appreciate your passion for E-bikes, and there is a lot more to Torque ratings than nominal power ratings shared by these E-bike companies. It is a shame that marketing blurb in the E-bike world can be highly error-prone. Have a look at this Torque rating for Harley Davidson Live Wire...
  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

    Thanks for your kind words. We have been working hard to support the North American rider community. I am glad our efforts caught your eye. The user can configure the system to US spec, but the liability is on the end user, and we ship it configured according to Canadian laws.
  12. 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

    @FiremarshallDave , as mentioned here, to reach 28mph requires active pedaling. We want our customers to enjoy pedaling / some workout and don't intend to design bikes meant for throttle use only. We use 2.4" tires on most of our bikes.
  13. 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

    @FiremarshallDave , the Canadian standard is 32 kmph or 20 mph. All Photon Pure bikes shipped to the US would have a top speed of 45 kmph or 28 mph. The current state of the in 2170 cell is 5300 mAh or 5.3Ah but these cells are too expensive. What we use is 5000 mAh or 5 Ah cells from Samsung...
  14. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    Gentlemen, Many thanks for your critical insights. I gather that there is a lot of more room for improvement of the pedal-assist technology that works for the North American market. We will work with Bafang to make some of these critical changes.
  15. Ravi Kempaiah

    Need Help finding the right E-Bike

    The website features accessories used for internal gear hubs like Rohloff and Kindernay. Enviolo doesn't use oil, but Rohloff does. Please see this video here. We are only taking a $999 deposit towards the bike, and any order placed today will be delivered in mid-April. The bike frame...
  16. 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

    Thanks for your kind words, especially coming from someone who has a deep understanding of E-bikes. The early feedback from Photon Pure riders has been very reassuring. A nice outdoor image ....
  17. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    We are now using 300X thumb throttle which has bit more refinement in terms of throttle response. depending on the use case, the twist throttle can be very helpful.
  18. Ravi Kempaiah

    Need Help finding the right E-Bike

    Hello, We are a Canadian company, and we have a US website for US-based customers, but our physical presence is in Canada. Photon Ultra uses the Rohloff hub. You will find some more information here in this link. As you can see, we use the Rohloff hub, which is considered the best gear hub on...
  19. Ravi Kempaiah

    Upgrading from original Himiway Cruiser

    Someone alerted me to this thread. An option you "might" want to consider is the Zen Photon Pro. It does have a throttle, mid-drive motor, Enviolo IGH, step-thru design. There is a detailed thread here. Some pictures below.
  20. Ravi Kempaiah

    Zen Photon Ultra - limited version (Bafang Ultra, Rohloff Speed hub, Gates belt drive)

    as Gionni mentioned, the bike has a throttle (actually, we have improved the throttle hardware from what you see in the picture) and the Rohloff E-shift is only limited to Bosch and Panasonic motors. As of now, no other motor works with Rohloff E-shift. Our Bosch-motor equipped Samurai works...
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