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I see that this is my first post since 2013! The 18Ah battery for the Panasonic motor on my Kalkhoff Agattu has finally given up the ghost having done sterling service for nearly11 years. I purchased the bike from 50 cycles, and I am currently awaiting a call back to my enquiry about the...

Summary This post updates the graphs which I put up in Feb 2012 when my Kalkhoff - BMZ 18Ah Li-ion battery was 11 months old. Now after 24 months and 46 charge ups the capacity reduction appears to be very little. Projecting forward it looks as if my battery may retain over 80% of its initial...

Here is a copy of Kalkhoff's certification for a whole series of their bikes, just sent to me by 50cycles, after I got a bit alarmed at some wild statements on another thread that nearly all bikes are illegal. It looks like my Agattu C3 is nicely covered. I can see why kit-bike builders may...

Here is an example of the EU spending money on a research network. The Italian node of the network has come up with a controller for the regeneration system which enables the human to work at constant power output, storing excess energy in the battery until it is needed for accelerating from...

I have demonstrated how to steal an electric bike (wt ~ 50lbs) which had been immbolised by a lock passing through the rear wheel and frame, but not locked to some immovable street furniture. I found such a bike locked in this inadequate way outside a nearby shop. It had been left not locked to...

Averaging 19 mph (so almost certainly illegal) an electric bike was the fastest in a 7 mile commuter time trial challenge into Oxford, beating cars, buses, and everything else. See BBC News - Eynsham cycle path campaigners hold commuter challenge

I was amused this morning to read a thread on the main forum page about preparing one's pedelec for winter. Thoughts of winter seem so far away as I am enjoying 32C heat near Spanish Town, Jamaica today; in the shade and with a fan blowing; long sleeves and trousers to keep the mossies off...

Struck by the image of three commonwealth flags being raised at one of the medal ceremonies on Friday, I thought it was remarkable how many medals were being gained by countries which had at one time or another absorbed some British traditions through colonisation. So I though I might try...

I know I am not an easy customer. Certainly I am not welcome in my Local Bike Shop. I wanted to try a new electronic counter for which I needed a front fork with disc brake mountings. I have a 26" wheel with a special disc already mounted - a counting disc not a braking disc, although it looks...

Cyclist who left solicitor brain-damaged fined £850 | The Times Horrific damage caused by a cyclist jumping a red light at 26 mph and ordering pedestrians to get out of the way. What is the e-bike angle, apart from please be careful and wait at stupid red lights, and give way to pedestrians...

14 months ago when I had just bought my Kalkhoff Agattu, I posted about using the bike to measure the London Marathon course. In the very early hours of yesterday morning I was on The Mall again, this time to measure the course of the 2012 Olympic Marathon. At 1.30 am I joined the assembling...

I took advantage of the Ebike testing day at Redbridge Cycle Track on Sunday, to compare the performance on my crank driven Kalkhoff Agattu with that of some of the bikes with rear hub motors. I was particularly interested to see how the hub motored bikes coped with the short 10.5% hill. Here...

Last July BMW announced I have tried to search this forum for information but the search engine does not handle 3 letter words, and using google to search the forum only finds refernces to cars. Surely someone here has got some information about the new BMW bike's spec. which will be in use...

A couple of innocent posters in this section of the forum have recently fallen foul of vbulletin's optional censor list. The words added to this list by admin would be best surrounded with curly brackets {thus}. Otherwise the clever vbulletin software replaces a portion of any word containing...

Kalkhoff Agattu C8 Impulse - one for the hills! In short: The new 8 speed Agattu Impulse is definitely better than my 3 speed Agattu with the Panasonic motor on hills, and gives a slightly faster overall average speed on mixed terrain circuit. I am strong enough only to need the higher gears...

I don't know if anyone has already posted this link: Electric Bike Magazine: ways to read it! where you can read online the recently published issue 4 of the Electric Bike Magazine or download it as a pdf. Quite a few bikes are reviewed by Peter Eland. There is also a summary of the current...

I have just had an email from 50cycles announcing their Equinox Sale: http://www.50cycles.com/equinox-sale.htm 15 % off all Kalkhoff orders until one minute past midnight tonight!

Summary The reduction in charge up time for my Kalkhoff 18Ah battery (~26V), which has occurred during the 23 charge ups in its first 11 months from new, suggests a reduction in capacity of 6% per year. If degradation continues at that rate I will have still have 12Ah capacity after 5 years...

Battery Management Systems for Large Lithium-Ion Battery Packs (Part 3 of 3) You can download the table of contents and 3 pdfs which the first introductory chapter. Its aimed at large electric vehicle batteries not e-bikes, but the first chapter gives some of the basics of BMS. The book is £90...

The Cycle Guy column in the Sunday Times today has an article by Robert Penn about his experience with a Spencer Ivy electric bike costing £1900. It is predictable: enjoys the assist, but heavy to carry up steps and load on and off trains. Heavy on the wallet.