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Thanks Bob. There have been two hydrogen fuel cell e-bike designs, a prototype from Aprilia more than a decade ago and a privately designed recumbent trike from an Austrian individual. The latter was fast and had an over 50 mile range. So perhaps this news might stimulate someone in the...

There's a lot of confusion about this. A lithium battery being stored out of use long term is best at around one third charge and kept close to zero degrees C, which minimises capacity loss with age. One that's in fairly regular use is best kept at around room temperature to perform well. .

It's a Bafang with 30 amp controller, peaking at about 1000 watts gross. Only used on tarmac roads though, but in hilly territory. Yes, like so much on e-bikes, suspension has indeed improved considerably over recent years in the best cases, but there are still lazy old style designs on some...

Yes that is! My working span was from 14 to 54 when I retired, but I took two whole years out on sabbaticals during that 40 years. From the age of 16 I'd been determined to retire early. .

My guess is pulsed charging, supplying at a high current rate in a chain of high frequency pulses. A similar method is used by chargers which can recharge ordinary single use alkaline batteries. Basically the electrolyte rests momentarily between the high current pulses, avoiding damage due to...

Yes, the exponential nature of resistance with speed. It's sobering to reflect that the human powered speed championship record on the flat at Battle Mountain in the USA is about 83 mph on a streamlined recumbent. The pedalled power input over the timed stretch is probably far below 1000...

Yes, it is an alloy frame and that fixing with a 6mm bolt has given no trouble with a high powered hub motor. .

Toyota's long awaited Mirai model, hydrogen fuel cell powered, is finally going on sale. Two things for you here: First, today's BBC Radio 4 "You and Yours" program has a feature on it and the fuelling availability and you can listen again from the exact 20 minute mark on this i-player link...

Indeed, I'm eighty next year, lungs fine, heart fine and although from some mild easily controlled blood pressure rise, much fitter than many 10 to 20 years younger. And I eat butter, salt, red meat and all the other things that were supposed to have killed me years ago! I don't drink alcohol...

To help you to understand, when a battery is charged, the electricity is changed into a chemical state which gives the potential to convert back to electricity when we need it. Therefore batteries are chemical devices, not electrical, so an accurate immediate electrical readout of what charge...

I suppose, but coming from a time when I was riding at 14 (and in the trade at the time!) and legally at 16 on as much as 1000cc bikes, it doesn't seem too bad. I passed my full motorcycle test at two weeks after my 16th birthday, so I do feel a bit sorry for today's beginners with the hoops...

Yes, according to the licence advice sites. I copied and pasted from one. .

It's a circular green thing for detecting men with colour blindness. :)

With far more permitted: 3. What can I ride if I have a provisional motorcycle entitlement? A motorcycle up to and including 125cc with a power output of 11kW (14.6bhp). .

Careful, we could end up with very few posts! ;) .

The ban seemed to have a mutual aspect since I think Frank was too busy to be bothered at the time. As far as I could see there were various aspects to the ban, but one was promoting his high powered machines in any forum area. Oddly enough, with the currrent discussions about up to 10kW...

Not you, I've seen this happen a number of times, an old thread suddenly popping up again without any up-to-date post added. Either a glitch in the system or maybe someone starting to add a new post but then abandoning it without clicking the Post button. As you may know, new text entries are...

Poor word choice on my part, I meant exaggerating the importance or relevance, rather than the actual rate. But you probably knew that before responding. .

Excellent indeed. .

Can't see this working with the density of cyclists often on their routes. Since it does it's buzzing warning as soon as another cyclist gets near front or rear, it would be buzzing so often it would drive anyone mad. And they exaggerate the death rate. With roughly six times our number of...