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  1. D

    Best Controller for XYD-6A2 & other plans

    Gonna buy the 350w 24v 28a-(current limit) one from ebay.
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    Identifying Crystalyte Hub Motor Kit from yardsale

    I've been taking it out with a 36v 7ah lead acid battery as a stop gap measure until I have my lithium ready. It does go slower with the 7ah battery but it still makes the ride easier than plain pedaling. Everything went fine on my first 2 rides but on the 3rd a squeaking noise almost identical...
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    Identifying Crystalyte Hub Motor Kit from yardsale

    Danka. I'll post any follow up questions if I need to once I have the break in hand.
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    Best Controller for XYD-6A2 & other plans

    bump
  5. D

    Identifying Crystalyte Hub Motor Kit from yardsale

    Would it be ok to buy a generic 2 wire (red & black) ebrake and use it for this controller even though it has a 3-pin ebrake connection? If so is there a safe way to determine which pins should go to which wires?
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    Cheap 10s Lithium BMS

    Thanks
  7. D

    Cheap 10s Lithium BMS

    Thanks for the very informative post. It would be cool to have something like that with a low voltage alarm and individual cell voltage displays. I love the idea that this item uses of a total usable battery percentage being displayed rather than voltage so you can have something to glance at...
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    Best Controller for XYD-6A2 & other plans

    Someone's gotta know which Chinese cheap ebay 24v brushed motor controller is best for a 24v 18a 300w XYD-6A2? I know they make 300w ones for $20 on ebay but the 350w and 250w ones are around $10 so my question is which of those 2 would be better or would neither? Do I have to spring for the...
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    Cheap 10s Lithium BMS

    Those spacers would also keep them from rubbing against each other of coarse but I don't have to tell you that. Wish I had access to a 3D printer so I could print a bunch a up. There was a Da Vinci on sale a few weeks back for $300 but it wasn't worth it to me just for this and it's not like I...
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    Cheap 10s Lithium BMS

    The guy in this youtube also uses an interesting little lcd BMS meter but doesn't look as detailed as the other. I hope I can find a cheap semi bulk source for those 18650 spacers/holders that I've seen used here and there on some youtube's and elsewhere cause they seem like they'd make changing...
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    Cheap 10s Lithium BMS

    I do have one of those GT watt meters with the same specs. Just thought that detailed BMS was cool. I'm in So Cal. I understand both points I do feel a little overwhelmed and am wondering if I should have just bought an ebay LifePo4 36v 15ah for around $300 from china but I also am kinda excited...
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    Cheap 10s Lithium BMS

    I don't actually have those 12v 30a switches. The one I bought was the master battery cut off switch which is a massive old hunk of switch with a 300a capacity. I don't really understand dmnum's comment about the current circuit. I have some pics of my controller's circuit board on my Crystalyte...
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    Cheap 10s Lithium BMS

    My stupid controller doesn't have a power switch input it must be one of Crystalyte's earliest versions of their 408 kit cause I've found pics online of a Crystalyte 408 kit that had a switch on the controller. for now my preffered connector is the Anderson 45amp but I can't afford the anderson...
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    Cheap 10s Lithium BMS

    Only 24 pack of cells out of the 240 cells are like that so at the very least I'll try to recover the others or at least see if they're recoverable. I guess I'll break all the packs up into individual cells, clean them up, check their capacity and maybe even internal resistance with my new...
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    Best Controller for XYD-6A2 & other plans

    Should I order the 24v 350w YK31C controller from ebay for my Currie Electro Drive XYD-6A2 300w 24V 18A motor? Although I do still need help with the other concerns/questions I'd like to know that asap cause it'll take a month to get to me from china so I'd like to get ordering it out of the...
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    Cheap 10s Lithium BMS

    Sorry for the wrong term I meant iron not gun. I'm self taught so I'm a bit bad with terminology.
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    Cheap 10s Lithium BMS

    A lot of them seem ok and some of it seems to be spot welded (though oddly some soldered also) it's just that 24-cell pack that has all that acid damage that has me worried. In any case at the very least I plan on separating them into 10 24-cell bricks and covering them each in cardboard plastic...
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    Cheap 10s Lithium BMS

    Here's the pics. Concerning Ykick's comment about hooking up some kinda alarm triggered by the BMS why not just hook up an lvc alarm as well as a BMS by connecting two sets of balance leads in parallel to each other (one for the lvc alarm) or if not using it for discharge and only for charge...
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    Best Controller for XYD-6A2 & other plans

    Although that looks pretty cool I want to just find the plain clips/contacts without the plastic battery holders cause to save money and material I want to fashion something with the clips and some 18650 holders/spacers on the tops and bottoms of the cells. Unfortunately even if I myself or...
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    Cheap 10s Lithium BMS

    I found the following BMS on ebay and wanted to know what you all think of it. I'm thinking of using the BMS to balance charge my recycled laptop 18650 10s 40ah battery pack in conjunction with some kind of bulk lithium charger while on the go and away from home (got an iCharger 1010B+ for...
  21. D

    Best Controller for XYD-6A2 & other plans

    I bought a Currie Electro Drive XYD-6A2 300w 24V 18A. I'm planning on buying a 24v 350w version of the YK31C controller (Yiyun Tech) from China on ebay. Does 350w sound like to much cause it's a 300w motor or should I be getting the 500w version since that's closer to the 432w that 24v x 18a...
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    Identifying Crystalyte Hub Motor Kit from yardsale

    Thanx! Now just the pin out or a technique for identifying which pins should connect to which. On a separate note since the controller is probably 20-25 amps I'm hoping a 30A fuse on the battery will do that is unless the current sometimes peaks over 30A although even if it does I don't know if...
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    Komda Folding Rescued from Craiglist

    I bought a Currie Electro Drive XYD-6A2 300w 24V 18A. Is there any chance I can put its guts into this gutted geared hub shell? If so could someone point me in the right direction for info on said project. Also Is there any way to determine the pin out of the DB15 connector that Komda put on...
  24. D

    Identifying Crystalyte Hub Motor Kit from yardsale

    Can someone tell me the name of that 3-pin ebrake connector (so I can find the "male" version of it on ebay or amazon). I'm gonna buy some ebrakes and plan on redoing whatever connector they come with if I have to. Also any tips on determining the pin out. On a slightly separate note I had this...
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    Komda Folding Rescued from Craiglist

    Worst case I could convert it in the future and have my own discount/poormans Brompton electric bike. Maybe even turn it into a mid drive if I can figure out how the freewheeling dual chain cranksets work exactly so I can have my local third world bike shop make me one on the cheap. Or maybe I...
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