Recent content by tomtag

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    Help! Front chainring size ?

    I just thought it was quicker & easier to change the front. Also cheaper. I liked the idea of going to single speed at the front, as once I had the motor, I was always in top chainring. It let me get rid of front mech + shifter, giving a better space for display on handlebars as well. (& I...
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    Help! Front chainring size ?

    I have a 9 speed cassette at back and yes still using those gears, rear mech is a bit stretched forward on largest gear at back due to chain length, but doesn't seem to cause any issue and I don't really use it much in that gear. Bike has a 2009 SLX chainset & SRAM cassette & chain I think (not...
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    Help! Front chainring size ?

    I converted an MTB with a 250w rear hub kit. I found the same & took all the original chainrings off, also the front mech, then added a 48t narrow/wide chainring off aliexpress with no guide or mech, and over last 600 miles or so has been ideal. Mostly flattish commute, but also rides round the...
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    Bottle batterys

    I had a similar one from Yosepower that was 11.6Ah. It failed after one year after wear between the case & the cell wrapping (which really shouldn't have been able to contact each other). I think it was due to a combination of cramming in too many cells and an imperfect design.
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    Replacement Battery choice.

    Many thanks for the response. I think I will get this one ordered before stock disappears again.
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    Replacement Battery choice.

    Hi All, I am looking for a new battery after my previous one failed and wanted to ask for a little advice before I order. I have a MXUS XF08C rear wheel motor & am considering a 36V 15Ah battery with Samsung INR21700-50E cells in 3P10S arrangement. The advert suggests a continuous discharge of...
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    Mystery power cuts

    I didn't end up getting anywhere with Yosepower, after offering a discount they ended up deciding to ignore me & have not advised whether the same design problem has been resolved in their newer batteries, so will not purchase from them. I am now wondering if I could get a replacement on a cycle...
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    Mystery power cuts

    Well it looks like Yosepower have changed their mind and will not offer any discount, I have asked again, but doesn't look promising. Does anyone have any reccomendations on where is a good battery supplier for a replacement? I bought the kit from PSW power so could try there, but not sure where...
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    Mystery power cuts

    But then I think I would break the warranty sticker and lose any warranty on day 1. Even if I just opened to check the design was improved. Not sure which would be the best way to go. Blind faith and a warranty, or reassurance with no warranty? Opinions welcomed.
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    Mystery power cuts

    If I understand the question correctly, the answer is no. All of the thick wires from the BMS run down a different side of the battery where there is no damage to cells. This side has a fully enclosed 'groove' so no chance of the case grounding onto the cell surface. The other side had an open...
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    Mystery power cuts

    Hi WheeliePete, thanks for the feedback on battery choices above, very useful. I may well have to stay with the bottle version due to space, but will spend a bit of time measuring up to confirm. Yes I have sent photos & an explanation. TBH they didn't seem overly interested, just said cannot...
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    Mystery power cuts

    So I have had a response and they won't replace, as out of the 18month warranty, but have suggested a discount on a new one. Not sure how much yet, I need to choose one & I think they will let me know. So I have looked at the website, my current battery is 36v 11.6Ah. The one I had was already...
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    Mystery power cuts

    Just less than 2 years, but only had an 18 month warranty. I will contact Yosepower & see if there is anything can be done, but not sure if I will get anywhere.
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    Mystery power cuts

    Thanks for the input. So is the general opinion that this beyond help, and not even worth replacing the cells. So it's a new battery? If so would anybody be able to recommend where to get a new one? This was £170 at yosepower.
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    Mystery power cuts

    It is where the slots run inside the case and stop the internals rotating.