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  1. V

    Ghostly bike! Will a moving e-bike balance without a rider?

    Look up "Sperry's Rule" of gyroscopic precession on google. Bike wheels have strong gyroscopic properties. It will explain why you have to steer a bike at low speed using the handlebars, and then lean it to steer at high speed. It is that transition that has to be learned with a two wheel bike.
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    I had a strange experience today

    I thought that descending would be much easier, psychologically, than ascending, but it looked frightening from the top :eek: Has anyone else been in the same situation? Going up gravity is working against you, so you can stop at any time you want, going down gravity is working with you so...
  3. V

    Climbing and overheating

    stop and feel the motor at the top of the hill, if it is labouring then it will be considerably heated and uncomfortable to touch
  4. V

    50 cycles guarantee an update *good one*

    What did the remote neighbour do with the original bettery?
  5. V

    buy cheap dh front wheel

    Have you broken a mirror in the last 7 years?
  6. V

    Stick Carrier

    No probs, I use them on my exercise bike to convert it into a "cross trainer" exercising both arms and legs at the same time
  7. V

    Stick Carrier

    Try trekking poles from "Go Outdoors" http://www.gooutdoors.co.uk/hi-gear-walker-antishock-pole-p96875 they are telescopic (close down to 65cm) and extremely light. Can be velcro taped to the frame of your bike. These are the cheapest but do just as well as much more expensive poles
  8. V

    Kalkhoff agattu clacking noise

    Also look for loose golden eggs whilst you are at it
  9. V

    Best Ebike mileage.....on ONE battery charge

    And only a 12 volt battery!
  10. V

    Will a 50A BMC controller work with a direct drive hub?

    Or the three "billy goats gruff" to overcome the troll
  11. V

    Sorry, Another Question

    It could be limited by the controller if the absolute wheel top speed limit caused by the balance of battery emf versus back emf is higher than that allowed by the controller - hence d8veh's question about rpm - knowing the rpm and the size of the wheel you can work out the mph at that maximum...
  12. V

    Sorry, Another Question

    That is what I was expaining about "back emf" above (Electro-Magnetic Force - EMF)
  13. V

    Sorry, Another Question

    There is an electrical motor effect called "back emf". When your motor starts running it also then acts as a generator to produce a voltage in the reverse effect of the power you are applying. If left to freely run the motor will get faster until the back emf balances the power supplied plus...
  14. V

    charging electric bike via battery bank

    Remember he has solar panels, so the charging will be free, and he still gets his "Feed in Tarriff" income from the solar panel set. Also using a battery 1 day on bike, 1 day off bike, will reduce its stress and lengthen each individual life
  15. V

    Cost to Charge a Battery

    36x14 = 504 watt hours - that's half a KWH. Assuming a really poor charger with 50% efficiency then it would take 1 KHW to charge your battery My electricity bill shows cost close to 12p per KWH - so if your charger is more than 50% efficient then your cost is 12p or less, at 100% efficient...
  16. V

    charging electric bike via battery bank

    The charger load will be well within the capacity of your solar panels, so you will still achieve your "green and free" objective.
  17. V

    Changes Afoot

    It also moves you up in the telephone directory - look out for your dreaded rival "Aardvark Ancilliaries"
  18. V

    Tesla battery for home. Ok for a bike?!

    In the PDF there is a link to Y Solar who installed my kit. Y Solar: Phone: 0844 272 0036, E-Mail: info@ysolar.co.uk, Web Site: www.ysolar.co.uk Their reviews http://www.reviewcentre.com/Solar-Energy/Y-Solar-www-ysolar-co-uk-reviews_1717268#Reviews. Mine can be found for May 2104 They...
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    Tesla battery for home. Ok for a bike?!

    There is also one more FIT payment due any time now which will encompass the 4th payment for the year. The FIT is paid every 3 months against the reading of the export meter attached to the dc/ac inverter which produces the mains ac for use within the house. The "Granny Bonds" do not provide...
  20. V

    Tesla battery for home. Ok for a bike?!

    The installation cost £8000. The solar panels are guaranteed for 25 years, and have an expected life of 50 years, they lose about half a % efficiency per year. The electrical conversion system is guaranteed for 10 years and is 99+% efficient with no degredation in service.