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I don't think the gradient would change the basic calculation as long as the motor is required to provide assistance. You integrate the battery usage over the distance, oscillations will automatically add to waste.

it's not bluffing. clearing business is like the diamond business. You only have a small number of players, they control the price of diamonds in the same way than some banks control the clearing trade.

yes. What else can it be? supply and demand, whichever way you look at it.

the calculation of the required energy to accelerate the bike to 15mph is similar to calculating the critical damping in physics. The smoother the acceleration, the less waste you are going to get. Higher assist level will likely produce more oscillations, therefore is less energy efficient.

Andrea Leadsom is as skillful as Diane Abbott. I suppose remainers will want now to see her on TV more often. I must say Maitlis was quick to pick it up and has a pretty sharp tongue.

the average battery usage per mile is always proportional to the cube of your speed. There are two ways you can reduce WH per mile, higher user contribution and lower your speed. For commuting, I think around 15mph for all bikes. At that speed, the total energy required is 180W or 12WH/mile on a...

most likely scenario 2, but the difference would be small at equal user contribution. Higher assist will almost always produce higher acceleration thus burning a bit more.

tax havens?

I watched Andrew Neil's 'This Week' last night. I have always liked Portillo - he is to me a would be good conservative leader. His view on brexit is clear: we don't know what brexit is going to be like, but we know it won't be hard brexit after the election. Expect the Torygraph to change their...

if you design a 28mph commuter bike then you have to meet the customers' expectation, solid performance at 28mph whatever the weather, headwinds etc. That means a design maximum noload speed at around 35mph. You need a motor capable of 1000W raw output.

Please also make sure that the copper contacts at the battery output terminal are clean and put a little bit of grease on them to improve contact and keep oxidation away. Do same to the blades on the controller side.

that symptom seems to point to the battery needing to be rebalanced. Could you try to run down the battery as much as possible then measure the voltage. Put the battery on charge and write down the time it takes to fully recharge the battery. Your battery is 36V 13AH, you should see the voltage...

Bikes like the Oxygen and the Rio like they are at the moment have a noload speed of 24mph, their maximum efficiency is at 19mph, maximum torque at 18mph. For 23mph, I would rather swap out the rear hub motor for a crank drive motor and keep the rest like it is. The cost is only £50 extra and I...

to achieve parity, we should encourage 23 million Britons to emigrate before March 2019. I suggest universal pardon and compulsory transport for all our prison population for a start. I am not in a hurry, now the risk of hard brexit seems to have greatly reduced.

no, 1 of us lives with 445 of EU27. We should reduce the number of EU nationals to 1,000,000 * 65.5 / 445 = 147,191 That will please Mr Farage.

did he find much smoke inside the staircase?

They are for the 6-FET series, not for the 9-FET series. Their algorithm for Hall-less motors is not perfect, the result is that there is a difference in noise level between the 'with hall' and 'hall-less' versions of the same SWX02, albeit quite small, still perceptible with the 6-FET sine wave...

quite possibly for the majority of commuters but the law is the law. Bikes like the Oxygen and the Woosh Rio can do this quite efficiently if the law allows them.

the cyanide comes from high temperature decomposition of polyisocyanurate that is used to make the insulation panels. Who do you think is/are to blame for this? TM and her ministers?

would you like me to send you a schwalbe innertube for the front wheel? It is known for good quality and you would help me to compare the performance of the schwalbe innertube against the Kenda's for the rate of air loss.