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  1. jerrysimon

    Terrifying near miss at level crossing

    Few people live in the present and often their minds are always imagining tomorrow and what might be. In this individuals case, tomorrow may have never come! Jerry
  2. jerrysimon

    6.87kg brompton!!

    Like them :p PS without the motor and wires etc mine must weigh around 9-9.5kg. I have purchased a few Ti after market parts including seat post, rear axle, some bolts and nuts and the very expensive Brooks Ti saddle, that I got a deal on. Jerry
  3. jerrysimon

    6.87kg brompton!!

    ha ha cwah, It does not matter how light it is there is NO way I could ride in that position :eek: Plus in the UK I need mudguards :p Regards Jerry
  4. jerrysimon

    Momentum Bike video just out

    Stick a couple of big apple tyres on it :p Jerry
  5. jerrysimon

    Momentum Bike video just out

    Also nice to see someone else making use of the SRAM Automatix rear hub. I notice that one is the freewheel version not the version with the coaster or roller brake. Having use the coaster version I think I now prefer the freewheel and just use your regular V or disk brakes. Probably more...
  6. jerrysimon

    Small LiFePO4 batteries

    Thanks and good find :) Jerry
  7. jerrysimon

    Small LiFePO4 batteries

    cwah, I would be interested but currently I have two Konion 3Ah packs a 6Ah pack and three A123 2.3Ah packs :) Jerry
  8. jerrysimon

    Small LiFePO4 batteries

    For me when using cells, without a BMS, I really want to use the safest/most robust ones I can. This is why up to now I have stuck to A123 and Konion (Sony 18650VT) cells. I guess again that's the advantage of using a BMS in terms of then having access to more cell types. All that said, BMS...
  9. jerrysimon

    Small LiFePO4 batteries

    Ah thanks cwah. You can do that to A123 cells and they won't ignite!! Would be interesting to try it with a Konion cell. I do have a couple of older ones I could test :eek: I guess its unlikely you would damage cells like that on an ebike except maybe in a really bad crash. More likely you...
  10. jerrysimon

    Small LiFePO4 batteries

    Look forward to seeing your results cwah :) BTW what is an internal short circuit and how does it occur ? Jerry
  11. jerrysimon

    Small LiFePO4 batteries

    No the other Dave (Scimitar) :p Jerry
  12. jerrysimon

    Small LiFePO4 batteries

    Dave, A 1.5Ah pack ? I would of thought a 2p would be the minimum for ebike applications and even then only for low powered hubs like the Tongxin/Keyde. 1p would be pushing their max current draw. Regards Jerry
  13. jerrysimon

    Nano brompton on ebay

    Will do. That is of course what I meant not that I doubted they work, but that I could fit them in a suitable place (I may just fit one not sure yet) and that I could then get rid of the cheap horrible cut out brake and upgrade to the new Brompton 2013 brake levers as well :p The existing...
  14. jerrysimon

    Nano brompton on ebay

    Top of my list of things to do. Hopefully in the next week or two :p If they work well, I will be treating myself to a new set of 2013 Brompton brake levers :) Regards Jerry
  15. jerrysimon

    Small LiFePO4 batteries

    Follow the endlesssphere link I posted which shows you how to do most of that. As you say if you are in Spain then you can purchase and get them shipped there :) It is clear from your questions though that you need to read up a lot more to understand what you are doing. I don't really want to...
  16. jerrysimon

    Small LiFePO4 batteries

    I would not want to use those cells in a 1p configuration even my Konion cells are in a 2p configuration. Jerry
  17. jerrysimon

    Nano brompton on ebay

    One looks older another at least two years old. My motor has about three years of daily use on it and really needs replacing. As these kits are expensive if you don't have the contacts or skills to buy and replace parts yourself probably best to move on. Of course the base Bromptons themselves...
  18. jerrysimon

    Small LiFePO4 batteries

    The instructions are to re-cell Makita drill packs. For ebike use its simply a case of connecting balance leads, balancing them once then connecting them in series for a 36v pack made out of the two 18V 5s2p packs. You DONT need a BMS. You can also use four packs and connect two of the packs in...
  19. jerrysimon

    Small LiFePO4 batteries

    Note that reliable seller also now seems to be listing Konion (cell nickname for SONY-US18650V and VT) cells again ready made up in 5s2p packs. Sony US18650VT for Makita BL1830 LXT Lithium ion 18V 18 Volt Repair Battery Pack | eBay I purchased 8 of those to make up my current 36v, 3Ah and...
  20. jerrysimon

    What's happening with the Brompton ebike?

    It was not my conversion. They only wanted to see that out of curiosity. Their own design was all set to go and then as I understand their motor manufacture went under. Of course like all these things that was the speculation the actual reason may be more complex as they never formally said...