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how often you need to open the motor cover? not very. I'd like to know how much farther you can push a standard 1kw DD motor with oil cooling. 48V 35A continuous?

the way to get round the wrath of the Competition and Markets Authority is to offer retailers 'merchandising participation funds' - basically offering extra rebates for face to face sales.

They have upgraded their motor's power to 350W. IIRC, it has built in controller and torque sensor. It is ways better designed than the lightweight Annads and most German bikes out there. Integrated handlebars + console, battery + downtube, motor + BB. What do you think is the right price?

you are correct about the effect of unbalanced wheels at high speed. The centrifugal force is calculated by this formula: F = mass (in kg) * radius (in metre) * (square of angular speed in rad/sec) for 1 gram on a 26" rim going at 30 mph (spinning at 400 rpm), F = 0.001kg * 0.3M * (400 * PI...

a little while ago: Germanwings crash: How to guard against the threat from pilots? The threat from people we trust is a lot more real than from terrorism. http://edition.cnn.com/2015/03/27/europe/france-germanwings-plane-crash-pilot-threat/index.html

this video from Airbus shows that if the cockpit is video monitored by the crew or airlines or traffic controller, a lot of attacks could be better dealt with. All Airbus planes have fly by wire capability. It can't be too difficult to disable access to the computer from the airlines HQ or gas...

Whydo airlines still believe that their training and screening procedures are so good that nutters can't possibly be their pilots or their staff could not be blackmailed to commit suicide? to this day and age, it's surprising that cockpit is still not video monitored by airlines and traffic...

tricky point this is. The key issue as I see with bike shops is their high running costs. They will inevitably push customers to buy more expensive products towards the maximum amount the customers can afford because the same sale will bring in a bigger profit. Internet sales do not exert the...

they said JC is one of the BBC 'huge talents'. They said the same about Jonathan Ross and Russell Brand when they run into similar pickle for behaving badly. so what are we? a bunch of saddos that lament the loss of some BBC talents? people say that TV is 'cultture' - I don't care much for that...

when the bike is in storage, the battery can develop faults unless it is used a bit every week or two weeks. Can your engineer incorporate into this intelligent BMS an active discharge function that can be programmed via Android phone like sending 50WH into a resistor (or switch on a front 10W...

I think the trend is going wireless. When there is a bit of wire, the younger generation won't touch it, just in case they may get electrocuted.

I like it a lot. Have you got the price for it with 36V 15AH?

a hidden place for the battery will be less attractive to thieves, not rained on and saves also a little bit of weight. you can have the battery hidden and still lockable and easily removable. Like this one on the zephyr-B:

batteries are ugly, messy things. Best place for them is hidden away inside seat post, inside frames or inside rear triangle.

Not a very advantageous placement nor a pretty one.

The priority is for Moisson to get his money back. Then there is plenty of room inside the old casing to replace the cellpack. It will look neater and does not require messing about with the electrocnics. Cost for a 26V 10AH cell pack: about £140...

they'd void your guarantee when you convert a new bike to electric. Get a second hand from gumtree.

it's the BBC that made the three clowns immensely popular. And don't forget the work put in by the production team.

crank drives are at their most efficient at around 75% of their maximum speed (same for most e-bike motors), for the Woosh CDs, maximum speed is 86 rpm, best efficiency is at 64-65 RPM at the chainring.

@d8veh: Moisson's bike wasn't even cheap. @jonathan75: paypal is responsible for handing over the funds to an account controlled by KC. If KC does not return the funds, I'd suggest Moisson to go after Paypal. @Moisson: I am no expert but may be you should file against the guy who took your...