I guess I can do that too. I chose to use common parts to keep cost down. It’s just I can get these stuff in bulk to keep cost lower and some stuff takes a while to ship from China.
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Exactly, cheaper and easier for everyone to get all from one place
As I understood you plan to go to injection molding in the future?
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I think this comes down to how popular the modules will be. Even then I would assume that it would be on the popular build types (4/5p).
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@Winfly I was thinking here, injection molding will be expensive for sure, what if you could do a hybrid construction? Laser cutting is pretty cheap, you could have a reinforcement stainless steel plate at each side, with some longer screws one side could be threaded to further reduce the number of components
This way the 3D printed pieces would only be used to position te cells and have the bump to guarantee the compression on the right place
Another upside is that if the steel plate thickness is calculated correctly it will be light and works as a spring, no more worrying about compression set
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I agree with the injection moulding being too expensive, ecspecially since he’ll need multiple different moulds made
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Thank you for your suggestions. Quite an interesting approach I didn’t think of.
I ran made a spreadsheet today to see what’s the reasonable cost for everyone. I’m trying to raise fund to increase production through casting or injection molding, and support further development cost. I spent way too much money ordering the wrong stuff.
Initial early access offer
As of now, It will take me a day to print a set of 12s4p . That’s no where close to being sustainable. Because I will still be printing these I’m doing an early cost ended up higher than I wanted to be.
Settled cost:
- $80 + shipping for 10s4p set
- $95 + shipping for 12s4p set
You will have the option of mix of 1s4p and 2s4p modules for cutomized flexibility at different part of your board. Pieces will be cleaned up, Inspected and test fitted before shipping out.
Dimension of 1s4p module is 22h x 73w x 76l 2s4p saves 1mm in length. Pic later.
Other configurations:
- 1,2,3,4s 2-8p modules
- Stagger stack
- Align stack All available as long as it doesn’t exceed 10 cells in length. Price will be figured out and discussed.
Add-ons:
- Choices of 30Qs or VTC6
- Hex bit to save elbow grease
- Mini hex bit ratchet (highly recommending hand turning for finish compression. Not liable for damages caused by over compression)
Offer will be availabled once beta tester receive their units within 2 weeks and provide user feedback and pics.
Saving you some math and comparison:
NESE 10s4p modules = 90 EURO (with 4p modules) and 84 EURO (with 2s4p). + Shipping
Warnning! Subjective opinion, Do NOT over react.
Advantages over spot welding:
- Low initial cost
- -cost on spot welder
- Save you time and effort to
- Research spot welding technique
- Source material
- Modularity
- Easy to replace cells
- Easy to upgrade battery pack
- (Work in progress) travel friendly. Dis assemble into smaller packs for flights
- Cost
Disadvantages:
- Lesser conductivity between cell and busbar/braid contact (this is debatable, not going to argue.)
- Not fool proof. If you assemble wrong, you and I will be very very sad.
- Material, 3d printed part not the best at mechanical properties. That’s why I’m raising money to scale up production using other manufacturing method.
Advantage over NESE:
- shorter module length across cell diameter for more compactness
- Adjustable flexibility between modules
- Future prove as I will keep working on these and backward compactible is on the list.
Disadvantage vs NESE:
- Require a little longer and more tedious to assemble
- can mess up you if assembled incorrectly
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As for promised releasing 3d model for this project. I dont thinking this is the right time yet.
- This is not a complicated part. Anyone with some experience in CAD can replicate it.
- It will be a bad business strategy. I need this money to scale up to higher volume production. So quality increase and cost reduced in a long run.
I promise, once I overcome production logistics and begin higher volume production using better method. models will be available to public
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Please express your Interest and inquiry here.
And keep discussion on this post
Small update 12/27/18: Connectors, Upgraded braid, Custom 4p HAYA holders, SPUD Tayto Proj, gauging interest again
Connectors
Finally found some Ring Connectors that is the right size so that it preserve the form factor. still need to trim the crimp length by half but this will do.
Solid contacts as you asked for
On the other hand. I’m getting some of these made by a copper company in china. pressed copper on both sides with braid running along the whole length. It will be nickel plated and then pressed to make the buttons for contacts. since the MOQ is high I’ll only be ordering these for 4p options.
HAYA and HAYA only
Making Custom 4P modules for the HAYA Deck. Will be test fitted on @sofu’s new acquired HAYA.
will be oriented as such and featuring small holes for 24Gauge balance wire. (should fit 3 at the rectangle and 2 more holes at the corner
SPUD / TAYTO Swappable battery??
i’m working on a custom enclosure with swappable battery on everyone’s favorite short deck SPUD / TAYTO
12s3p
It’s slightly angled to match the concave of the deck
Realized I need clearance for the kicktail to actually do anything. lmao. 12s3p is a little too big but I will still keep mine this way. maybe offering 10s3p or 12s2p in the future for the swappable to make sense.
Going to print a 2 piece enclosure and then either make a silicone mold or Fiberglass right on top.
Still interested?
Since I was busy with school when I was last posted about selling them. and told everyone to hold off. how many ppl are interested to still?
- Didn’t take my money last time, take it now (pm me)
- Interested but still waiting for more incremental improvement (lmk what you are waiting for)
0 voters
Price chart is as such.
+ $7-13 US shipping. , will figure out international shipping when you ask me
I know I changed it a few time but this makes more sense for me.
Cell holder porn
Havent been posting for a while but here are some pictures from me and my lovely Beta Testers: @Wraith, @J0ker3366, @Friskies, @neiru37
Rebuilding my 13s4p with 2s4p modules
Compression leaving a small imprint on the cell contacts
Packing 10s6p modules with some extras into USPS small flat rate box
@Friskies’s 2s5p modules
@J0ker3366’s 10s6p modules partially assemble
@Wraith’s 10s6p modules
@neiru37’s 12s4p with custom xt30 connectors between 2s4p modules
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These look amazing, I especially like the last pic with the xt-30. By any chance do you have the dimensions of a 1s3p module, I feel as though it must be here but can’t find it
I’d be interested in the haya holders if they work. I’m still working on my haya board to show up.
This is fantastic. Are the copper parts going to be shaped like NESE tabs, meaning will they be a bit raised? But this still won’t be modular right?
Yeas for the raised tabs. That’s what I meant by buttons for contact. It will just be a rectangular bar and pressed instead of his that matches the cell diameter, that’s just not necessary and serves no purpose in power delivery.
With that you can still loosen one module and pull it straight out. On the negative side . Will probably short the cells if you slide it over the positive side.
When and how we can order?
@DAddYE just PM me.
it’s would be nice to give me your build list with deck and enclosure sizing so I can help you figure out how much you can cramp in there.
e.g hummie deck can do 12s4p signle stack at most and 13s4p single stack super crowded like my current build. HAYA with the new custom 4p module can probably fit 12s4p 4wd. with 4 focboxes or 6.6s. (674mm - 74*6 mm = 230mm for electronics, foc box are 65mm and 6.6s are 67mm long with the xt90 desolder from the pcb)
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Thanks sir! PMed
Well I made a mistake. Promised @Tello1969 that I’ll assemble his for free because I need to take pictures to make an instruction guide. Here it is hours later. Same setup as mine, 13s4p Hummie double cutout. Split p-group at the end, 4x 2s4p at the ends, and 4x 1s4p at the middle for better flex. Additional balance wire guides. Clear wrapped VTC6. This is definitely way better assembled than mine.
1hour of wrapping VTC6 with clear heat shrink. 1hour of prep/taking pics for a ifixit style guide. 3 hours of assembly.
To be Fair, I feel like I can so a lot better to redesign and cut the assembly time shorter.
Here’s some glory pictures.
5 Likes
Still interested here, Winfly. I have both the Haya and Hummie decks, so I’ll be asking for a set of 12S4P for each board.
Hey @Winfly , do you have a source for the braids? I will use that to joint each P group in my new pack, but on Ali you only find a handful of vendors and most of them don’t specify how wide they are
Locally I couldn’t find also, maybe I have not found the right nomenclature to search for it in Portuguese
3/8" Tinned Copper Metal Braided Sleeving - 10FT https://www.amazon.com/dp/B01MEG9V2R/ref=cm_sw_r_cp_apap_7zPOeGaPgj6Vc
You can try searching eBay too.
2 Likes