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  1. S

    Compression force on LifePO4 200Ah Help

    Hi, I bought some Lifepo4 200Ah batteries for my FVE project. They will be 16s1p combination. My question is: I have seen some information about compressing pouch cells for higher cycle life and not allow to swelling cell. I also seen this in datasheet for my cell: 循环寿命 25℃0.5C/0.5C 80%...
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    Surron 2-speed gearbox - does it worth ?

    I'm toying with the idea of making a two-speed transmission for surron :D I would give the transmission between belt and chain drive - instead of the connecting shaft that has one side sprocket and on the other side belt wheel. First gear will be for offroading - probably same ratio or slower...
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    "Shunting" Sur-ron controller - is it possible to increase only battery amps ?

    Hi, I want to try shunt surron x controller. I have depotted it. Here are pictures : https://endless-sphere.com/forums/viewtopic.php?f=10&t=89902&start=5450 So what i found are only two hall sensors on phases, so they are calculating battery amps from them. I measured sensitivity of thoose...
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    Sur-ron controller upgrade

    Hi, I'm thinking about increasing power of my stock surron, for begining i would do BMS bypass battery and later maybe buy new 72V battery to double power :D Does anybody tried to "shunt" original X controller ? Or what you recommend ? Buy some aftermarket controller like nuculear/ASI ? Or build...
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    Water cooled car alternator

    Hi, i have bought two water cooled car alternators, for remake a rotor with magnets. But i measured parameters like no load current, revs and BEMF. And its not bad at all. I wonder if it's not worth using as is and not remake it. Because I will have a variable "magnet strength" = variable BEMF...
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    Car alternator conversion Back-emf

    Hi, i had converted two alternators, first the old one is 90A bosch, and there i have original rotor but i did it turned on latche to smaller diameter and glued neodym magnets from burned R/C motor - rotor have original iron teeths but with magnets. second is 120A alternator, i made my own...
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