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dangerous. What'd happen if one motor fails?

that the rubber grip not pushed in properly.

to pull a trailer up hills, the BBS02 36V 25A 500W (high torque) would be your best bet. woosh have them in stock, you can order online. With 36V 15AH battery and charger, total cost is about £365+£315 = £680. http://www.wooshbikes.co.uk/?cdkit

the Sport CD and the (Krieger) have Shimano RapidFire gear shifter on the right, the throttle has to go to the left. Other than that, it's a normal full throttle, that means you don't have to pedal when you are tired. just noticed that the rubber grip was not pushed in properly, will tell...

most of the kudos bikes also have controllers on the seat tube unless they have rack battery. Controllers that can be integrated with bottle batteries usually have 6 FETs. The controller on the Krieger and Sport CD are Lishui LS947, too big to go inside the battery casing.

the updated woosh Sport CD now has 15AH bottle battery, £845. http://wooshbikes.co.uk/?sport-cd

yes, you are right, batteries do not require much looking after. The main cause of failure is swollen cells. If the cells are left too long to fend for themselves, dendrites form on the surface of their electrodes and when you charge the battery after a long dormant period, the cells produce...

You start seeing new BMSes on Chinese batteries with SMBus functions (IC2, HDQ) and Bluetooth, then people will start looking after their batteries better. Cyclezee and Kudos guarantee their batteries for two years, Woosh guarantee one year, it's down to marketing strategy. I suspect when Woosh...

That's prejudice, the cells are made mainly by Samsung, Panasonic and Sony. More often, people who buy expensive bikes tend to look after their bikes better than people who buy cheap bikes. Would you leave your £2k bike padlocked to a lamp post at night?

your xiongda has a two speed gearbox and is more efficient than the average hub motor, extending speed and torque as and when appropriate. A crank drive is not limited to just two gears, potentially more efficient than one that is connected to only two.

IIRC, the quataris bought Barclays convertible preferential shares, they made about £1.5B within a year. http://www.dailymail.co.uk/news/article-2271795/Barclays-investigation-claims-lent-Qatar-money-buy-shares-avoid-Government-bailout-height-2008-financial-crisis.html

you have collected stray radiowaves (like mobile phone and TV transmission) - usually with a loop aerial. http://www.free-energy-info.co.uk/Chapt7.html

how is your trip? see anything interesting?

don't blame the language for problems caused by WP. It only take a couple of minutes to disable XMLRPC from WP and install libapache2-mod-evasive on the server to mitigate this kind of problems. Any platform can be attacked, including Java.

You can't run a large site like this one without coding in php, you just have to keep patching it. I find that the simplest way is to ask your ISP to turn on network edge protection or harden your server.

21.10 euros en colis suivi.

wouldn't it be simpler to ask your Mum/Dad to post the missing wheel to you?

the low internal resistance of the battery (0.1 Ohm) causes a large inrush current when you connect 42V at the charger output to the battery input, that high current passes through a small contact area at the battery port causes a spark. It's kinder to the electronics to keep the sparks away...

if you want to change the gearing, it's simpler to change the chain ring and keep the inexpensive (£6 delivered) TZ21. http://www.ebay.co.uk/itm/Shimano-MF-TZ21-Tourney-7-SEVEN-Speed-Screw-on-Bike-Freewheel-14-28-/131476228170

I always connect the battery to charger first, mains second. You may see smoke but no way will you see a spark.