OW Pint VESC Repair

Lia

Took 2 months but those PintX bumpers finally came, fit them to the board to see how it looks. Not bad considering the battery housing still needs doing.

Interestingly the curved section differs between the models, see how they don't align.

Not a simple 14mm extension but won't be too hard to figure the curve out for this.

Edit 1

Gonna take a while to get this right but here's a start
Onewheel Pint.png

Onewheel Pint 2.png

Lemur

@lia Keep up the good work!

Lia

@lemur Thanks :)
Hope to release both models when done, fingers crossed I can get it done soon.

Lia

Printed off a slice of the new design, essentially the extended bit from my former housing to see if:
A. The extension actually fits in the housing (it did).
B. The guide rails that interface with the rear bumper fits (Too tight).
C. Is the support material for the guide rails easy to remove (OMG no!).

Spent some time fixing that and redoing the model a little while tidying up the inside of the housing and expanding the space as much as I safely could.

I feel FM did the PintX dirty, using 18650 cells in a housing like this leaves a lot of room. I bet with enough cell fiddling you could get 20700 or even 21700 cells in this with ease.

Onewheel Pint.png

Onewheel Pint 3.png

Onewheel Pint 2.png

I know there needs to be some room for the protective wrapping and foam but there is enough space to put bigger cells in. Honestly wonder if you could get some killer packs in the PintX. Anyone know if Chi/JW are working on this?

Lemur

@lia Your work is way beyond my pay grade! That will be great as I just got 40- 20700 cells. Unfortunately, I just blew up a Raiden7 running 18s1p for the first time yesterday, but I do have another R7, maybe I won't go 18s.

Lia

@lemur Thanks for all the support :)
Sucks that the R7 blew, looking it up it sounds like it's rated for 18s, what do you think did it in?

.

Update 1

Modelled some 20700's and tried to fit them in, so far I've found 13s2p works fine, probably could squeeze 14s2p without too much trouble but 15s2p might require breaching the firewall and modifying the wire channel to allow the cells to sit comfortably.

Below is 20700 13s2p

Onewheel Pint 2.png
Onewheel Pint 4.png

On the flip side if you stick with 18650 then 17s2p fits super easy without the need to even diagonally stack cells.

Below is 18650 17s2p

Onewheel Pint 1.png
Onewheel Pint 3.png

.

Update 2

It begins...

Lemur

@lia I'm not sure, I just made a 18s pack with each cell at 3.8v, the R7 tested fine with 68 v until I charged the pack to 75 v , pressed the power button and smoke from the vesc.

AngusOfStockholm

@lemur :(((

Lia

@lemur Fingers crossed it’s just a dead filter cap or something and easy to repair.

Lemur

@lia I've got a backup Raiden 7 and a Ubox so I'm not dead in the water. Thinking about a Lfocer v3 later on.

ed_co

This post is deleted!

ed_co

@lemur said in OW Pint VESC Repair:

@lia I'm not sure, I just made a 18s pack with each cell at 3.8v, the R7 tested fine with 68 v until I charged the pack to 75 v , pressed the power button and smoke from the vesc.

@lemur That sucks, because R7 is rated supposedly at 78V and they rate it for 18s. Bummer... I never liked R7 because they were pricey even when there were not reason before shortage... Little focer is the way to go by far...

Lemur

@ed_co I think the V3 Lfocer is the way to go now.

ed_co

@lemur Sadly is expensive as hell...

Lemur

@ed_co Yeah, $300 us is steep.

Lia

MK1 printed successfully minus a bit of nozzle wobble.
Took a while to get the support material off D:

Here's what I woke to this morning~

After a bit of cleaning up and filing down on the little channels for the rear bumper rails to slot into it fits quite well.

Slapped the rails on to verify that it does indeed fit and it appears to be pretty much spot on

Thankfully even the charge port looks to be accurate too which is a relief

Connected up the battery harness to the model after cleaning up the M20 threads with my tap. Everything fits nicely. Didn't have a BMS cover to hand but since that hasn'd changed since the Pint battery housing it should also work still :)

And now were back to the topic at hand again. The former VESC pint soon to become a PintX

Still need a name for this board though...

Not sure about sharing this publicly just yet without some other eyes on it.
Anyone fancy giving it a look over to see if there could be improvements?
https://drive.google.com/file/d/1Wn16iHf18XZYL955l8qn4RuGjkmOAliM/view?usp=sharing

One suggestion for printing, with the supports try blocking the inner-most part of the rail channels else it'll be a nightmare to clean them up after. Getting support just on the outer lip is enough to print the overhang. Screenie below of what I did.