Bussin Sportster | DIY take an on Onsra

[daegoe]

Great write up! Those led’s look so sick. You inspired me to incorporate them in my sportster build.

[rusins]

In honor of this build being nominated for BOTY, here’s some footage of me practicing racing on the board at a go-kart track:

https://www.instagram.com/tv/CnIYUgyj78a/?utm_source=ig_web_copy_link

[rusins]

Small update:

• Got Metr CAN + LTE installed with the always-on 5V buck converter. Seems to be drawing about 7% of the battery per day, so I really gotta keep an eye on this board
• Put a beefy (possibly too beefy but too late) 12V5A buck for the lights
• Forgot to take the airtag out
• Redid the kapton over the battery, hot-glued and taped down small wires in place.
• Applied Butyl tape, and put in all the enclosure bolts

More pics to come when it’s out in the real world. Apart from missing front lights, this board is now waterproof and fully complete!

[rusins]

@rusins

The battery died over winter. (Of course it did, that buck was eating 7% per day apparently), and I did not want to rebuild that crazy split-pack group. For a while I was thinking of rebuilding the board with a full 12s4p battery in the enclosure, and move the ESC to a top box on the rear. The Newbee Box V2 ESC enclosure with a DV6s fits perfectly for this use-case!
However it seems like my brother prefers riding a cheap bike he can lock anywhere, so I have no use for this board and am letting it go.

Well, some things happened:
1 – @RDs sold me some pre-soldered 4P packs of reclaimed Samsung 40T cells for 70€
2 – no one was buying the parts for this board
3 – I got a gf who could use a board

So, the plan is to build a 12s4p 21700 cell battery in the bottom enclosure. Because I had already epoxied a charging port, external XT-90 connector, and a bunch of other connectors, I had to do a bit of origami with the battery, but it all fit very nicely in the end

Then the ESC goes in a Newbie box at the top (smallest external ESC enclosure I could find) which houses a MakerX DV6s and a puck receiver (yo, anyone know where I can get some pucks? Kinda running out lol)

I used butyl tape to make the ESC box somewhat waterproof where the battery connectors go out. And a female ←→ female XT-90s cable connects the battery to the ESC.

Running FW6.05, sensorless with 45 degree HFI (seemed to perform the best, sometimes glitches when testing, but rides just fine IRL). Not the happiest about the ESC enclosure using carbon fiber (which should block RF signals ) but the remote works so I guess it’s fine.

Board rides like it used to – very chill, carvy if you want it to be, but decently stable even at the top speed of ~45km/h.

Now to fix that HomeAssistant addon that does BMS monitoring so that this battery lives lol

[rafaelinmissouri]

And just like that he is back in the game!!!