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I use 1.5C as a yardstick. 10AH battery is good for 15A controller. So if you limit your controller to 10A, then 7AH should be OK.

the simplest way to understand how things work is this diagram: this is a simple BLDC, as used in a hard drive motor. An e-bike motor may have 8-48 magnet poles instead of 4 but the principle is exactly the same. Note the middle point where 3 coils are joined together. In a 6-FET controller...

the Pound is lower than same time two years ago after TM lost her election. Brexit is bad for the Pound. That hasn't changed.

of course we don't but I know this for sure: whatever Corbyn could have invested, it will be privatised sooner or later.

the load is proportional to speed cubed, that accounts for 33% more supply versus 25% more speed. In my link, you get 0.3% more efficiency for the 48V.

free e-bikes for all pensioners!

voters did not vote for brexit though, the split is still in the middle with remain camp slightly ahead. BJ will keep EHIC, pension and citizens' rights, the trade issue will still take years to sort out. The Pound slides on the news that no deal is back on the table for 1/1/2021. There is...

that's only half true though. Remain leads consistently in the polls for more than one year now, all JC had to do is to 1. offer a referendum on BJ's deal. 2. tell the electorate how he would vote. Telling people that he'd vote to remain or for brexit is not vote losing because he has just one...

the motor is not a resistive load, I think of it as a coil, instead of 'R', it's a combination of ohmic resistance and inductance. For inductance, I usually think of it as a bucket. The current flows in, filling it up, when the current is cut, the bucket is tipped over, pouring out its energy...

For those who are interested in technical aspect of e-bikes, the Faro is representative of the current thinking: - lightweight, high torque motor (Aikema 13.0 motor weighing under 2kgs) - high energy density battery (3500mAH Samsung cells) - internal cable routing (protect electronics against...

we have plenty of stock of the Faro, it's just the paperwork. If the customer has already got their £1,000 voucher, it can be dispatched right away. The Faro is in every bit a worthy successor to the Woosh Karoo. It has the same power, but is better equipped with suspension seatpost, mudguard...

constant current. if the gradient is too high, you lose speed, when your motor slows down, it loses yield. Your motor will soon stall.

I don't know of any model of controllers that work the way you describe. Controllers are usually programmed to deliver power on demand. Power influences speed. The speed limiter that you see on most bikes is controlled by the LCD which tells the controller to stop when the read speed exceeds...

that's a good find.

legalities aside, there is no geared hub motors for this sort of sustained speed. The load is proportional to speed cubed. You would need 1500W+ and a direct drive motor. Also, post your question in the speed pedelecs section...

Bojo will try to make capital out of winning dozens and dozens of Labour seats in the North but as matter of fact, it wasn't down to him winning the argument, it was Farage that won them for him. What Farage brought to Bojo, Farage can take away too. Just have to be patient until Farage tells...

20% of labour voters went to the LibDems, PC and Greens, only about 3% bought Bojo's retail offers. Labour just lost credibility with 174 pages of promises.

what year was it when you built it? Compared to ready built, the Q128C can be replaced now with lighter motor, battery is now integrated into the downtube, hidden or semi hidden but smooth profile like the new Wispers. All the wires are internally routed.

I much prefer Blair to Corbyn, whose project is Militant's project, utterly unsuited to run a government of a free market economy.

I am in Spain, 23 degrees Celsius in the last few days, 50 Meg broadband so didn't miss anything.