Search found 17 matches

by LegacyCode
Nov 09 2020 5:22pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

I've got most of the stuff sorted now, The BMS i've ordered has arived, cells arive tomorrow (ordered 74 Samsung 35E cells and 10 of the cheapest cells nkon sold to practice on) The aluminum case has been made and sent by the seller. Theres a bunch of little parts like wires and connectors i'm waiti...
by LegacyCode
Oct 28 2020 3:59am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

I've ordered an enclosure from a seller on aliexpress at a custom size, decided to go with 14s5p in the end with Samsung 35e cells. I'll order the cells once i've got all the other stuff in, still need to look for a BMS if anyone has any suggestions on what would be good I'm still tempted to just or...
by LegacyCode
Oct 24 2020 4:55am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

This enclosure could work at 280~300mm length if they are willing to sell me one. I'm not sure how much extra height id need 69.6mm might be cutting it close if it works at all. If there's anything with a bit more height then this one, i'm pretty sure it would fit, can use the bottle holder bolts wi...
by LegacyCode
Oct 23 2020 3:08pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

I don't have an app - just copied layout from a book, , Canon G10, tripod, kitchen table and photoshop and lots of figuring. It took me quite awhile before I finally settled on the attached cell arrangement. You can make a jig to hold ten of the 6P cells for spot-welding 10 of the 6P connections. T...
by LegacyCode
Oct 21 2020 5:42am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Won't that depend on the size of your pack and then choosing a controller with appropriate amp rating? You don't need to be pulled over for exceeding the legal speed limit (with not plans to get a license) :wink: These bafang motors have a controller built in, supposedly all it takes is remove the ...
by LegacyCode
Oct 19 2020 3:19pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

So do you basically have 5 speed settings to punch for speed/power as your throttle control? So in 4th with a 12S7P with 80amp controller and the Bfun BBS02 could LC go at least 12km/h (15.5mph) in 4th (and even faster in 5th) ? 5 Levels of peddle assist, it should just cut off peddle assist above ...
by LegacyCode
Oct 19 2020 2:57am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

I think 84 Samsung 35e would be a good option (s14p6) for 20.7ah and 48a max if i'm correct? that should be enough the controller in the motor has a 25a max rating from what i found. Cells : Samsung 35e x84 Step Down : https://www.aliexpress.com/item/4000816351721.html (plastic one) Switch : https:/...
by LegacyCode
Oct 18 2020 2:02pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

If this mini cube 52V 30Q battery (possibly has the newer 141 30Q's) is illegal for your current use what makes you think your split 52V 30Q or 70T builds are legal? With this mini-mighty 52V you could've already been whistling on your IDEAL to nearby town :wink: https://lunacycle.com/52v-mighty-mi...
by LegacyCode
Oct 17 2020 4:56pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Being you've got a spotwelder you really should consider either a 14S6P or 14S7P (35E) triangle DIY with 20.7Ah or 24Ah rating ( with room for the BMS at bottom of either one ) ... I'll keep them in mind! 112 cells cost 300 euro or so at nkon Checkout these excellent design/build articles by spinni...
by LegacyCode
Oct 17 2020 7:47am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Been trying to figure out how many cells i can fit into things using inventor this one from aliexpress can hold about 50~60 18650 cells at 180mm length or so with space for a bms https://www.aliexpress.com/item/32931329946.html casecell.png also looked at a pvp pipe wtih a 100mm diameter and a 1.8mm...
by LegacyCode
Oct 16 2020 4:25am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

"https://endless-sphere.com/forums/download/file.php?id=281045" ... IDEAL triangle area ASSUME THIS IS THE SMALLER TRIANGLE AREA (excluding pivot suspension area) within the larger inside bike frame triangle. Following is based on smaller triangle area that doesn't include space taken up ...
by LegacyCode
Oct 13 2020 2:25pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Does the Samsung 40t pack I gave you a link to fit ? Or will it fit ? It's 12 in It gives you dimensions all you have to do is get some cardboard and some tape tape the battery mock-up and see if it fits you were going to have to do it anyways you're going to have to make a maca more that bike the ...
by LegacyCode
Oct 13 2020 8:24am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Spot welder just arrived

Image
by LegacyCode
Oct 12 2020 3:46am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

None of their packs can fit the triangle, the smallest one was too big, it's full suspension MTB i'll put a picture below. https://i.imgur.com/moXH7Sc.jpg Can't envision that split pack lookin' cool in your very cool looking bike. Isn't a 12S4P fast enough and cooler-lookin' in that allowable trian...
by LegacyCode
Oct 11 2020 3:19pm
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

What is so unique about the design of your bike that neither a 14S4P triangle or rectangle pack is doable? Having a difficult time imaging a bike that doesn't have room for a triangle or rectangle pack. Are you building a 3-wheel trike? If so isn't there room enough for a rectangle pack in or under...
by LegacyCode
Oct 11 2020 9:25am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Re: Split ebike battery

Have you checked out UnitPackPower's triangle packs I've spoken to them they have nothing that could fit my bike. What about fabricating your own DIY rear rack for your 14S4P I've looked into rear racks, it's not really an option either the s14+ doesnt go to bms, it is the P+, the bms is P- negativ...
by LegacyCode
Oct 11 2020 6:45am
Forum: Battery Technology
Topic: Split ebike battery
Replies: 67
Views: 2276

Split ebike battery

I found this forum through google when looking into creating a battery pack for my bike, I've been trying to build up an electric bike for a while and I've ran into the problem that pre-built packs just wont fit, since then I've been doing alot of reading on how to make a pack myself i'm just stuck ...