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  1. Woosh

    What's the answer?

    Yes. It's the size of a 6 fet controller
  2. Woosh

    What's the answer?

    The new Tongsheng hub kit arrived last week. I have been using it on my bike. The kit comprises of a 1.8kg motor, a stem mounted LCD, a controller in standard aluminium casing and two cables: one goes to the LCD and the other to the motor. stem mounted colour LCD: Here it is mounted onto a...
  3. Woosh

    Anyone ever tried to implement regenerative braking?

    Braking on a 100kgs bike + rider travelling at 25kph does not generate much power. The kinetic energy of 100kgs at 7m/s (25kph) = 2450J = 0.68WH. Some of it will be shed by the rotor, brake pads and the motor, the net recovered energy is even less if you only want to slow down instead of...
  4. Woosh

    Woosh Woosh Big Bear

    We usually need to know who the first owner is, pictures of the bike, details about the faults etc. in order to assist you. Your situation is a tricky one. On top of that, you did not post any pictures of your bike and the state of the bottom bracket. I don't know if you have the tools and can...
  5. Woosh

    Woosh Woosh Big Bear

    magnet discs don't cost much, it's usually the post and packing that costs more than the goods. The main thing is we can help you better when we know your situation exactly. The Big Bear was sold for nearly 10 years. When we get your email, we can check your email address in our database to find...
  6. Woosh

    Woosh Woosh Big Bear

    Your picture shows a replacement pedal assist magnet disc, we use this part in some kits. We have the part but it is not what was fitted originally to your big bear. This is why I suggest you contact us. We have various models, the cost is about the same.
  7. Woosh

    Woosh Woosh Big Bear

    Please email support@wooshbikes.co.uk we will help you.
  8. Woosh

    Would fast charging make much difference?

    if the BMS talks to the charger then fast charging at 10A is very doable.
  9. Woosh

    Would fast charging make much difference?

    what happens if you smoke your battery while fast charging it at 10A?
  10. Woosh

    Would fast charging make much difference?

    EV's batteries have different chemistry compared to most of e-bibke batteries. The latest Lithium iron Phosphate from CATL (they called it the Shengshin battery) can be charged at 4C until 100% full. Your e-bike battery would normally be charged between 0.2C and 0.4C. When you charge a battery...
  11. Woosh

    Prices of the electricity we use to charge

    I watched recently a YT video about some thermo-electric engines. The idea is simple enough: you burn fuel to heat up some salt like table salt in a jet engine. The sodium in the salt emits an intense yellow light. At the closed end of the chamber, you place a photo-electric cell whose band gap...
  12. Woosh

    Are Cheap Chinese Ebikes really that bad

    Cheap Chinese bikes rust. Chain, pedals, seatpost, bolts and nuts, brakes cables and brakes. Also, most of us are overweight. We need some suspension and hydraulic brakes.
  13. Woosh

    Prices of the electricity we use to charge

    unfortunately, most of the important progress is only for cars and trucks' batteries: rapid cost reduction, durability, fast charging, standardised connectivity and energy density. e-bike batteries are left in a mixed bag with tool batteries. Just look at how little you'd pay for a car that can...
  14. Woosh

    Prices of the electricity we use to charge

    it's 40.8% - not 4%. Renewables contribute about 40% of our electricity (cheapest), 18% come from nuclear (eye wateringly expensive) and 40% from fossil fuels.
  15. Woosh

    Prices of the electricity we use to charge

    blame the journalists. The Shengshin batteries have 4C maximum charging capability, that's about 10 times what can be found on e-bikes. We charge our batteries at 0.2C and up to 0.4C. By depositing the anode maeterials with nanometers precision, CATL managed to reduce swelling when Lithium...
  16. Woosh

    Prices of the electricity we use to charge

    the number of cycles exceed 5000 in new generation batteries so using them to reduce the cost of kwh makes sense. It's a shame that progress in new batteries don't spread yet to e-bikes. However, when solid state batteries become mainstream in the next 2-3 years, we'll see them in e-bikes. CATL...
  17. Woosh

    Woosh Camino

    yes.
  18. Woosh

    Carrera Vengeance Conversion

    Iirc, the bizango has the chainstays flare out quite close to the bottom bracket. It may cause problems for middle motors.
  19. Woosh

    Carrera Vengeance Conversion

    For tour weight, bike and trail rides, I suggest the Tongsheng Tsdz8. It's been covered here extensively.
  20. Woosh

    Carrera Vengeance Conversion

    How hilly is your area and how heavy are you?