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or a £549 woosh gsm: http://wooshbikes.co.uk/?cdkit#gsmkit

Yes. Ideally, you'd want to find a working bike with the same kit. Plug your LCD into the working bike, switch it on, if the same error shows up, your LCD needs replacing. If the error disappears, then your controller needs replacing. If the error is still there after replacing the controller...

d8veh and Panda have the components. Woosh in Southend only have a test XD bike, no spares.

woosh stock complete set of sensored hydraulic brakes, £75 per pair, front + rear + 160mm rotor + 180mm rotor.

To charge both batteries with same charger overnight, you can daisy chain the spare battery output to the primary battery charging port then plug the charger to the charging socket on the spare battery. I made a daisy chain cable with a lead canibalised from a dead charger that I was given and...

yes, charge up the two batteries to full before linking them together. There won't be any spark.

error 9 on the Bigstone is communication error, usually LCD, controller or cable fault. Typically, the 5V supply from the controller stop working. You need to have access to working replacement components to find out where the fault is. Unplug brake sensor, pedelec sensor and throttle just to...

AFAIK, woosh don't sell hydaulic brake sensors.

To double the range, you connect the two batteries in parallel, that's it.

Why do you want to run 72V through a 250W motor? Most 72V systems are for 2KW kits.

The PEC system based on n-Silicon can't work in e-bikes so I guess you have to go for SigNa system.

generating hydrogen on the fly from 10nm nanoparticles of silicon can only be done in labs. Pure silicon is very expensive and highly reactive, you can't just store it in plastic bag, it'll passivate in contact with oxygen and burn through the plastic and all you are left with is very fine sand...

hiding excess cable: I'd run the main trunk cable below and inside the front mudguard, wrap the excess speed sensor cable around the chainstay and shorten and tuck the excess battery cable inside the base of the battery. I notice you mounted your HL battery a bit too close to the seat post...

I would even be cheaper still if you fit an 8-Fun BBS01 to this £1,200 Van Nicholas bike: http://www.fatbirds.co.uk/664632/products/van-nicholas-zion-29er-rohloff-titanium-mountain-bike-frame.aspx

I know woosh don't sell HB sensors for BBS01, their zephyr-B are fitted with hydraulic e-bike brakes which have built in sensors. Their demo HDB BBS01 bike is fitted with 3D printed housings for a microswitch. They then solder the brake sensor connector to the microswitch. Eclipse sell the...

can you post a picture of your HB sensor?

@owlo - weight for weight, you can't match the power of Lithium ion batteries at the moment with anything else, other than a sine wave inverter generator and a can of petrol. Spare battery is the way to go. You can simply connect the output of the spare battery to the charging port of the main...

they have the same number of cells, so they weigh the same. Each cell weighs 50grs. The 13AH battery has 2.6AH cells, 10S5P means 5 Parallel (P) strings of 10 cells in series (S), so you get 3.6V * 10 = 36V and 2.6AH * 5 = 13AH The 14.5AH battery has the same configuration 10S5P but the cells...

Nothing to worry about. your new pack is made of 10S5P, 50 cells. Each cell holds 2.9AH and weighs 50grs. Your new pack should weigh about 3.2kgs-3.4kgs. The old pack is made of 50 2.6AH cells and weighs about the same. At this moment, the new 3.5AH Panasonic cells are quickly becoming popular...

http://www.greenbikekit.com/lithium-battery/li-ion/36v-145ah-panasonic-ebike-downtube-batteries.html That's the HL (or 08 case) battery, no on/off switch, you may need to drill holes or install rivnuts to fit...