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  1. W

    Two boys die in "ebike" accident: Cardiff riot broke out after 'police prevented parents seeing fatal crash victims', close relative says

    I think it would say: "After reviewing and analysing many thousands of posts, the way to solve your problem is to switch it off and then back on again." :) The problem isn't so much that these things could become sentient, it's that humans don't understand how they work and probably never...
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    Two boys die in "ebike" accident: Cardiff riot broke out after 'police prevented parents seeing fatal crash victims', close relative says

    Maybe you are the only real person on here and we are all bots :) Perhaps guerney is nothing but a GPT4 hallucination, after the poor machine was fed on years and years of pedelecs forum posts ;-)
  3. W

    Monitoring the Balancing of a Pack

    It's a bit of a worry what you have observed with the Daly BMS modules, sometimes discharging banks. Something like that could be a real issue in terms of balancing. I wonder how big a problem this is with other BMS brands.
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    Monitoring the Balancing of a Pack

    So no pattern at all? All brands the same? Got any data you can show?
  5. W

    E-scooters to banned at Gloucestershire railway stations and trains

    It has a 1500W motor and will do over 30 mph...
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    E-scooters to banned at Gloucestershire railway stations and trains

    Have to put it in a musical instrument case for camouflage :)
  7. W

    E-scooters to banned at Gloucestershire railway stations and trains

    And I think I've spotted Soundwave's ride :D
  8. W

    E-scooters to banned at Gloucestershire railway stations and trains

    Won't be helped by this... https://www.bbc.com/news/av/uk-england-london-65629502
  9. W

    Monitoring the Balancing of a Pack

    Well, I think you can see that from the data, unless you chose to ignore it. You've told me you have a garage full of battery packs, why don't you try the experiment and report back?
  10. W

    Monitoring the Balancing of a Pack

    I've been charging all my packs to 41V for quite a while now. The Yose power packs and the ones I've built myself from single batches of cells have never had a balance problem. I'm currently experimenting with a small scooter pack I've put on on a child's bike, we'll see how that goes after 6...
  11. W

    Monitoring the Balancing of a Pack

    Which it is not when charging to 41V, yet if the battery is made properly in the first place with well matching cells it seems to stay in balance quite well, even after many cycles, while the battery being forced to balance every cycle will be putting some banks through a lot of unnecessary...
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    Monitoring the Balancing of a Pack

    Not easy to get to the transistors when they are under insulation and heat sinks. However, nothing happens in terms of balancing at 4.17V, even when left overnight, while at 4.18V something starts to happen but it is slow. It is not until 4.19V you see quite rapid change. So you can tell what is...
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    Monitoring the Balancing of a Pack

    It's using a Fluke DVM. The figure of 4.18 V is what I have also seen on the data sheets for other BMS modules, so I was not that surprised.
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    Monitoring the Balancing of a Pack

    Been meaning to post this for some time but not got around to it so here goes while I have a moment spare. I think it's worth looking at as the results are quite interesting. I posted this back in November last year: Here is a dismantled Yose power pack, generic Chinese cells, crappy 20A BMS...
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    Wisper Tailwind

    You can fit larger tyres, this will increase the circumference and slightly increase speed.
  16. W

    How to deal with Bosch Error 510?

    You do realise the motor is full of permanent magnets and magnetic fields?
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    LifePo4 ebike full build

    Nice build. Interesting the use of the Indium foil. Have you thought about using Indium solder? It has a melting point around 118 C, so it might be possible to use that without overheating the cells.
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    Best Apps for routes & charging?

    I use this one a lot: https://cycle.travel/map There is also an OpenStreetMap overlay on the site, which indicates things like bike shops, water fountains etc.
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    Daly BMS, read on here people had problems.

    Never run a pack with a bypassed BMS if you get no output. If a BMS is "not working" you need to know why it is not running. It might well not be running because there is a fault with one or more of the cell banks and it is doing its job by not letting power out! The danger is if one or more of...