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  1. J

    New Stromer flagship ST2022

    What are the improvements in the new motor ?
  2. J

    A deep-dive video series into Internal Gear Hubs for E-bikes

    Very nice video Ravi. I wish you did many more videos like this one.
  3. J

    Chainring size

    Chainrings don't have any effect on the sensors. You should be able to change it like any regular bike. Just make sure that the number of links on the chain is right.
  4. J

    New class 3 or more hub motor bikes starting with the Biktrix Swift and the Hilleater Phaserunner

    Please don't make numbers up. Wren fork doesn't add that much(the fork itself is probably 4-5lbs and the oem fork is also of similar weight), if it adds anything. While the bike is heavy I don't know another ebike with 1kwh battery and a dd motor that weights significantly less. Don't look at...
  5. J

    So Many Flat Tires - Advise on New Tires?

    250W is more than enough as long as you have a large enough cassette/ small enough chainring that you can ride at a cadence >60 while being slow enough. Ebikes are great at adding cardio to your daily routine while commuting. I do hills like that on the picture on eco when I don't care about the...
  6. J

    My UC Pro has arrived

    Your confusion is, you start with torque which is a measure of rotational force then add rpm into the mix and venture into power. Put rotational speed aside. A 90kg human being putting all its weight on a pedal of length 17.5cm generates(maybe the word generate is creating this confusion)...
  7. J

    2022 - Top 12 Bafang Ultra M620 Ebikes

    I remember Flx being in the 5k range and Frey was also being a bit cheaper and having better suspension, that was what I was talking about. I may be mistaken.
  8. J

    2022 - Top 12 Bafang Ultra M620 Ebikes

    It seems there is a significant price increase and some of the offerings have switched to lesser components. Am I correct ?
  9. J

    My UC Pro has arrived

    Physics is physics, the less power you have the slower you go(many of us pointed this out while fanboys were singing a different song). Torque by itself is a meaningless number and it is used for marketing too much. By putting my weight on one pedal I can generate far more torque then 85nm. By...
  10. J

    Bafang H700

    I came across this one https://bafang-e.com/en/products/motors/hr-series/h700/. Seems to have two gears(probably just changing rotation direction to switch between high and low gear). It should be a good solution to give power limited hub motors a good climbing ability. I couldn't find any...
  11. J

    Zen Samurai - Built in Canada - shipping since June 2022

    Looks almost the same as Animaris Seatpost suspension. Great to hear that you have started to take preorders. Best of luck.
  12. J

    Stromer ABS ??

    It was erroneous on my part to only mention the state where the wheel locks. It doesn't need to completely lock, the leftover kinetic energy that can not be absorbed by friction etc. will translate into rotational motion. The whole bike will simply rotate with the front wheel. While abs name...
  13. J

    Stromer ABS ??

    I believe some of the motorcycle abs systems also make use of gyroscopes. And what you point out is the job of an abs whether it is a bicycle or a motorcycle am I mistaken ? I agree that because cg is higher with ebikes they are easier to flip over.
  14. J

    Hydra v Trek Rail v Levo

    This is what me and several others have been saying. It is perfectly in line with the theory. These mainstream mid drives are nice for technical riding but they fail to deliver higher speeds at sustained climbs. I can cap my bosch cx on tour, that is it gives nothing more when I switch to emtb...
  15. J

    Stromer ABS ??

    You can find detailed information by searching how abs work in motorcycles. But to put it simply, there is relative rotational motion between the front wheel and your frame. You front wheel is rotating with respect to the frame of the bicycle, this is the same relative motion as your whole...
  16. J

    Charger question - feedback

    And all of those bikes come with their own chargers. IMO Those people should invest in a better charger themselves. Moreover the batteries from mainstream brands will not even play with a custom charger. On the other hand for someone who want to own only Ravi's bike, paying a couple hundred $...
  17. J

    Stromer ABS ??

    On paper it should be able to prevent it. Cruising >20mph I would really welcome this since in an emergency rolling over the bike is quite easy and very dangerous. After all not everyone has the skills/reaction time to move their weight and modulate the brakes in the event of an emergency...
  18. J

    Charger question - feedback

    @Ravi Kempaiah Idk about the Luna charger. If this is going to be a charger you will be bundling with your bikes then what matters is, it should work with the voltage range of the supplied batteries. If you have decided on using only 48V I don't see the point of a variable Voltage one. It...
  19. J

    Cleaning e bike

    Idk, I guess these videos are ok but it also has nonsense suggestions like "don't use car shampoo". I find Car shampoo to be the best thing to use on my bikes. They are designed to be very gentle on paint(after all they are formulated to be used on car paint). Just pick one without added wax...
  20. J

    My UC Pro has arrived

    There are quite a lot of resources for brake adjustment. First make sure that the wheel is centered, the axle is tight but not too tight. Adjust the brake caliper, loosen the bolts, while holding the brake tighten them back. You can then slightly loosen one bolt to make finer adjustments. If...
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