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woosh have them for £5 if I remember correctly. It's a 5 minute job. You'll need a £2 chain tool to break the old chain and a link to fit the new chain. http://www.ebay.co.uk/itm/Bike-Chain-Rivet-Extractor-Pin-Splitter-Bicycle-Breaker-Remover-Tool-Part-Kit-/161521730577 you don't have to use a...

The cells in those batteries are 2500mAH 16650 pouch cells. it may be easier to send the battery to Woosh for repair.

I found the xiongda is not faster nor more torquey than the BPM, just lighter.

give d8veh £5k to play with, he'll produce a better e-bike than the Haibike Carbon Ultimate.

cheap bikes are OK but that depends very much on what you want. The challenge is to lessen the maintenance. At the moment, e-bikes need too much of looking after. You still need to check your brakes, lights, spokes, tyres, chain and gears after a few hundred miles, 10 times more oftern than...

ultimate and legal at the same time? it can't be done.

you are nearly always better off with a Hall sensor. Small, sensitive, no bounce, easy to pot and glue even inside the brake body and you simply need to flip the magnet to change the polarity of the signal.

pedal pressure is translated to throttle level with a minimum pressure to start the motor.

he's got a back problem. Pushing 60kgs in/out of the house is something I would not recommend. A full-sus lightweight bike with BPM motor like the Zephyr-B is much more sensible, comfortable on the back and wrists. Because the market for e-peds is tiny, if it does not work out, its resale value...

I can't see why not. It should be dead easy to put this system through EN15194 certification. The pedal sensor acts like a torque sensor. You clip them on your pedals, the sensors tell the wheel when there is a load on either pedals. It'll take 30 minutes to convert a bike like they said.

good idea but low powered and battery has low capacity at the moment (24V 5AH).

These bikes are cheap because the components are cheap. the website says 250W motor, 59kgs. http://www.eped.co.uk/?product=iped-type-s I don't think they are road legal. The website says the bike is an EAPC, which is wrong because EAPC allowable maximum weight is 40kgs. These e-peds are not more...

it uses simple pedal sensors. The motor cuts out when you stop pedalling.

If your maximum range is 25-30 miles or less, the Woosh Zephyr-B which has BPM motor, hydraulic brakes and SR NCX seat post, about the best equipped bike for this sort of money. If you need a bigger range, the Big Bear which has BPM motor, 15AH battery and NCX seat post. On the budget side...

you can use 14AWG or 16AWG silicon wires. http://www.ebay.co.uk/itm/16AWG-Silicon-Wire-Super-flexible-high-temperature-1m-Red-1m-Black-UK-seller-/231295899052 When you connect up the packs with wires, you get a little spark like when you use the jump leads to start a car. The battery can be put...

parallel up two batteries is uneconomical.

don't do this. You need thick wires for the large currents between batteries and controller. The wiring is bulky and dangerous. You need a properly designed printed circuit board to make the connections between the electronic elements (diodes or FETs + resistors, capacitors and transistors)...

If you haven't used 3400mAH cells, now it's time to try. These lightweight cells transform the bike. I tried them on the Woosh Zephyr-B. The bike becomes so much more nimble after shedding 4 lbs in comparison to the Big Bear.

don't worry about controlled half turns. It's just an easy way to get the wheel moving in the right direction. Bring the wheel to the centre line, then bring all the spokes to the same tension. If you do this for the first time, make sure your spokes are tight but not too tight, you can ride a...

All the woosh crank drive bikes have throttle. This one has a new 20A motor: http://wooshbikes.co.uk/?krieger