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  1. Benjahmin

    Compared to pedalling under your own steam..................

    Overtime your fitness will improve but without the sweaty, headsdown, neckstraining, I'm not slowing down even for red lights, scowly faced misery of the unassisted rider. Life on an e-bike is actually enjoyable:cool:
  2. Benjahmin

    Makita tool batterys with 250w hub

    Not sure what the current rating of any tool batteries is, but I'm pretty sure it won't be the 12-20A that a bike motor/controllwer will be calling for. This could lead to damaged battery. Two batteries in series would in deed be 36v, you could parrallel them with two more, so halving the...
  3. Benjahmin

    Things you might need when the going gets tough.

    In answer to the title. An e-bike!
  4. Benjahmin

    Using less battery power

    Living in hilly Wales there's no way I'm going to a 'normal' bike. However I do ride more with power off and suffer the weight penalty. However the mileage I achieve wouldn't be possible for me un-assisted.
  5. Benjahmin

    How to find range?

    Well, it all depends on the maximum current rating of your controller. If it is more than the maximum current rating of your battery, then it is going to suffer. How this will show is the voltage going down very quickly under high load conditions (high assist settings or hill climbing). It...
  6. Benjahmin

    Ultimate Woosh Big Bear Cargo Bike 570 miles £900

    An absolute bargain, wish I had the space and a persuadable wife (not a euphanism!).
  7. Benjahmin

    How to find range?

    All that said and done (no arguement with any of it) I take the simple approach of assuming a consumption of 10-20watthours per mile. If you're fit you'll be nearer the bottom end. If you're out of sorts and it's windy, you're gonna be near the top end. AK, who cycles the alps, claims around...
  8. Benjahmin

    eBike-specific, main battery-powered front light

    Yeh, I'm aware. That's what pisses me of so much about led headlights. The gov's going to have to come up with some way of specifying the maximum something or other for these bulbs. Good luck with that!
  9. Benjahmin

    Need new battery

    As you don't need a specific shape, speak to Jimmy at Insat/BGA reworking. He is THE battery geek. He can make one for you, discuss the best cells for your needs and make it as a soft pack battery sized to fit your bag. And all for less than you will pay for a proprietary one. Some one will...
  10. Benjahmin

    eBike-specific, main battery-powered front light

    I thought that, in the UK, there is a max wattage for headlamp bulbs. But, having just looked, I see all sorts of crazy powers available. I live in Ceredigion near the Brecon Beacons, famed for it' dark skys. No wonder I'm getting blinded on the lanes. Not least of the problem is people...
  11. Benjahmin

    ebike, to wheel chair conversion.

    That is awesome, it's good to know that humanity is alive and kicking.
  12. Benjahmin

    Good afternoon from Milton Keynes

    From behind the drums - welcome!
  13. Benjahmin

    What use are hybrid vehicles really?

    That's great Flecc, thanks. So it would seem that my surmize is on the right lines. A hybrid is lugging around a 'dead' power train, that's to say if using elecric the IC engine/gearbox etc. is not active, therefore just ballast. If using I.C. then the electric motor and battery are dead...
  14. Benjahmin

    What use are hybrid vehicles really?

    But as I said pure electric is out for me. I'm interested in the technology itself. Is it, as I think, two complete drive trains on a hybrid or PHEV? Why are more not like the BMW, which seems to be an elecric drive train with a I.C. generator on board. Doesn't that make more sense? For me, I...
  15. Benjahmin

    36v Vs 48v

    Yes, of course there is an increase in power by overvolting, that's kinda the point of doing it. The insulation in the motor will be flash tested to a much higher voltage than it's rated 35v. No problem there. So, yes, the heating effect will be 33% higher than at 36v, but if the heating, at...
  16. Benjahmin

    What use are hybrid vehicles really?

    We are approaching the time when we will have to change our much loved Vitara. It's been a very capable car with 4WD capability that has towed trailer loads of logs off muddy fields for us. But it's a 2L diesel:eek:. Ageing means that this sort of activity may soon be beyond me, so willing to...
  17. Benjahmin

    36v Vs 48v

    I must beg to differ. Motor windings are configured to give a particular rpm, that's what the winding code signifies. The insulation involved is more than capable of standing up to the increase in voltage. It's true that you have to be careful with any current increase, but a 36v 17A...
  18. Benjahmin

    Hello

    Bet you won't stop at one, it's kind of addictive, espescially if you're a tinkerer.
  19. Benjahmin

    Tennis elbow - need thumb shifter

    Would these be any use...
  20. Benjahmin

    Have I bought a Lemon?

    For the battery lock, try a locksmith or drill out the barrel yourself, that's probably what the smith would do. Then you'll need a digital volt meter and a camera for 'photo's. Then come back and start firing questions. The motors are pretty bombproof, so worst case scenario is new battery...