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Non-Bromptonians may wonder why the bike has such a following. First time you ride one, they feel very twitchy and even a bit unstable. When you get used to the ride, it is fun and strangely addictive. It is particularly useful about town. But it does have limitations compared with a full-size...

Hi folks. Haven't posted for a while, but I've been reading the site from time to time, particularly recently. For the past few years I've been using a Heinzmann powered mountain bike. This, alas, has been stolen, so I am looking for a replacement. I'm very probably going to use an Oxydrive kit...

Just received this email on the prospective electric Brompton... Hello The last time we wrote, we revealed that “Project X” was more “Project e”. Since then, you may have come across a number of stories concerning the upcoming eBrompton, many of them inaccurate, so we thought it was about...

Dear cwah Your constant discovery of bikes of varying degrees of exoticism are a delight and please continue with them. However, I cannot be alone in worrying that you will soon buy one of them and (again?) be disappointed. If these bikes have anything in common it is that they are all too...

Recently there was some discussion about using a flywheel to recover lost energy. Here's an example of someone who has done it. Flywheel Bicycle Demo.mov - YouTube Doubtless there are many others...

Start up ebike company Radstock Holly has announced a range of new products based around a CANNY bus user interface. 'We believe this will take the ebike user experience to a new level. We want to get away from the idea of an electric bicycle as a form of transport and into the realm of...

Oh no! My brother-in-law has taken my advice and bought a Wisper :eek: No pressure on either of us, then, David?!?

Hi folks A bit of a long shot, but if anyone has a Heinzmann battery or charger (preferably both) that they don't want, I'd be interested. Thanks

Apologies, but being driven mad by trying to find a quote attributed to Churchill. Have tried googling, etc. It is approximately: 'Pray state, on a single sheet of paper, the requirements for a modern navy.' Now, there's a challenge!

Just spotted this. It's a site called batterycity.co.uk and the link is for ebike batteries. No idea if this a good source, just thought I'd better pass it on. E-Bike -

The Dahon Espresso seems a good bike to convert because it combines an aluminium frame with a steel front fork. It is a 26" folder. Normally it's available for just under £300. I've got one and it rides well. I've just noticed this curiosity on eBay DAHON ESPRESSO MOUNTAIN BIKE 'RETURNS...

Is there a simple relationship between wheel size and hill climbing ability for any given motor torque? For example, if a comparison were to be made between a Forza and a Torq, is there a simple percentage difference in their hill climbing capacity? Or what if the same motor were put in a 20”...

In long-standing need of a torq washer, torque arm, torque anything, I have been to many an LBS and asked mechanically inclined friends but finally, after a rather dispiriting session in a local workshop, in desperation I phoned up Frank Curran of Powabyke (and this forum) who had one and gave...

Hi folks Does anyone know anything about the 80mm Tongxin? Does it have the same torque and level of reliability as the 100mm version? Thanks Andy

Before the Exmoor ride becomes too distant a memory, albeit a delightful one, it might be useful to gather some information about why more people didn’t participate. Perhaps this may help Nick for next year’s jaunt or other similar ones. Just to get the ball rolling … I nearly didn’t go. Here’s...

Hi folks I'm keen to try to buy a Tongxin and controller and possibly other bits and pieces. I've tried searching for contact email addresses (I remember some being quoted, though I also remember someone saying that they no longer do individual orders) but without success. If anyone can...

Thanks to Flecc, Frank and Nick for your advice by pm on this. We managed to remove the outer cover and loosen the flange of the spindle. This gave access to the eight wires where they come out of the base of the spindle. However, we couldn’t slide the spindle up the cable because the cable...

Tongxin motor and controller wanted. 24v hill-climber preferred, but other variants considered. Must be good condition. Thanks. Andy.

Has the idea of occasional meetings been mooted previously? I for one would very much enjoy hearing someone talk through a project or one of the forum's 'heavy hitters' (no names, but you know who you are!) speak about one of the more recondite aspects of this hobby. Any comments, anyone?

I saw one last week. Unfortunately, I didn't have time to ride it, but liked the look of it. It has the Wisper house style, but looks lighter. I particularly liked the unobtrusive battery (apologies, I know this is a hobby horse of mine :rolleyes: ) On the subject of which... I wonder if this...