Here’s my third build (reworked from my first one), hub motor based, It currently has ~50 miles on it and it’s very smooth to ride compared to my belt one.
- x2 VESC (Enertion and esk8.de)
- Carvon Dual v2.5
- Sulaco Enclosure from @RunPlayBack 10S4P Li-Ion - 40x 18650 Samsung INR from nkon.nl (~170 eur)
- Battery capacity monitor (coulometer) (~35 eur) [link]
- Proto Boards anti spark w led (~46 eur) [link]
- 10S BMS 60A (~27 eur) [link] - [link2]
- 10S 3A Charger (~30 eur) [link]
- Koston deck
- SMTBoard controller (~38 eur) [link]
Stats (recorded from the vesc):
w/ rider weight 105kg (230lbs) Max speed: 44 km/h (27mph) https://metr.at/r/BxvSe - theoretical max speed 54km/h Max range: 38km (25 miles) - at avg speed 20km/h Max vesc temp: 70C
Replaced hubs, now running dual Carvon v2.5 hubs:
VESC ride logs:
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The urethane on the hubs doesn’t seem to slip, I tried them at 6S and they became really hot pretty quickly, but with the 10S they seem to stay cool, I have still to try them on a long hilly track to see if they can whitstand the load (I’m ~105kg). Controllers (I have two of them) are super reliable, both vesc work well and seem to perform almost equally, charger/bms are good. I like the led inside the anti spark switch because not only looks cool but I sometimes forget my old board (the MKV2) on, and the vesc in standby discharges the battery a bit. The Sulaco enclosure is really massive, it could fit 60+ cells but I think with 10S4P I should be ok for now, I would like to make a 10S5P for more range and less voltage sag in the future
I’ve still to route a path for the cables in the deck but I’ll probably wait for the Carvon V2.5s to arrive (next week) and I plan to do a quick video comparison between jacob hubs and the carvons next month (carvons w/ 97mm flywheels).
Here are some shots of the old 6S setup, when assembling the current battery pack, power switch / coulometer details etc…
The battery meter has good infos (voltage, percent of charge, amps remaining to be consumed) and it flashes while charging which is not bad.
Assembling the new pack:
I’m using standard 18650 battery spacers, some copper wire soldered on the cell solder tabs (I used a 80w soldering iron) Added some foam and taped everything together (I need some appropriate heatshrink I know)