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Error 30 usually shows up if you have a damaged cable between the controller and the LCD. That could be caused by humidity shorting the signal wires.

Your experience is invaluable, thank you for answering my questions. I am looking forward to your next build. My previous comment should be taken in the context of a prospective buyer. 'What do I get for my money?' - of course, it's a legal bike, but there are also other aspects to consider...

there is an issue with transport. It's very difficult to ship just batteries on their own, even by land or sea because of the UN rules on packaging. Most of the time, shippers use the relaxation that the UN allow, they can ship two batteries inside each carton, one inside the bike, the other as...

This bike is being offered for sale at the moment, a would be buyer would compare and contrast its features against a new built or ready made before making an offer. From that angle, one could see that this bike, sold as is, has lost much of its appeal except it's road legal. RobF's comment...

does anyone know if this sort of thing is legal to use in the parks, pavement or cycle tracks?

@warrah. You built this bike in 2012. If you were to build another one for the same purpose (30mph, 30m range), would you use the same components?

perhaps not on all bikes. Chinese bikes will be most affected because the RMB shadows the US Dollar. The Pound drops from $1.56 at the beginning of the year to $1.51 currently. For most of last year, the Pound was worth around $1.65 on average, peaking at 1.715 last July when the economic...

the motor on the demo bike looks like a 1.5kW or 2kW unit. Do you know how much power has been tested on this frame?

mountain roads are going to be a challenge for any motor. It's difficult to stay legal and keep to 250W on this one.

If you buy a bike that a couple of years ago cost £3k for around £700, just add the electric kit to it and you'd get a very good e-bike. Why spend $1,799 on a glorified battery casing?

there are a lot of e-bikes out there with just LED panel instead of LCD, they do not have cut off speed. Should they all be considered illegal?

it seems to me that your controller has blown.

if you are not in a hurry, the forthcoming upgrade for the woosh Sirocco 2 in a few weeks has all your required elements: 15AH battery behind the seat post, BPM rear hub motor and hydraulic brakes.

yes, you should and start again. Perhaps look into converting a good bike.

it's easy enough to contrast things: headwinds are the biggest reason for having an electric bike! and not many bikes have as strong motor as the Big Bear LS and the Sprint, the vast majority have less powerful motors than these two, including the German bikes. Adding to this, your budget of...

now that's scaremongering. If it wasn't your fault then you are entitled to compensation. Drunken or not is a matter for mitigation, not for the perpetrator to wriggle out of his liability. If I run over a guy on an illegal bike, I don't expect to get away with it.

choosing a good kit depends much on the donor bike. Tell us which bike you already have or want to convert.

if you don't want to spend a lot of money, and a lot of torque, an electrified Brompton is neither. The woosh Zephyr-B has good torque and folds: http://wooshbikes.co.uk/?zephyr-b

would this £4.99 one do? http://www.amazon.co.uk/Silverline-PL65-Internal-Circlip-Pliers/dp/B000LFXALU/

this one (£7.65): http://www.amazon.co.uk/Am-Tech-11-inch-Degree-Bent-Plier/dp/B0070NBB3U/ Perhaps a lock ring tool may also do the job?