A crazy idea. An equally crazy build.
DRIMIG4CUSTOM
G4
Building a 17 kW single-motor beast from a KuKirin G4 platform, with a Spintend motor, a Fardriver controller and a 72 V system.
Built together with: DRIMI × WattsUpGarage ↗
CUSTOM G4DRIMI × WATTSUPGARAGE
- Battery
- 72 V / 20 Ah1440 Wh
- Cells
- Tenpower50XG · 5 Ah · 140 A peak
- Motor
- Spintend80H / 17×4
- Controller
- Fardriver72450
From components
to character.
DrimiG4 is the story of a shared build. Together with the WattsUpGarage team, we built a scooter whose key components are all listed here — from the battery cells to the display.
At its heart are the 72 V battery, the Spintend motor mounted in a custom swingarm made from 6 mm steel and the Fardriver controller . Explore the components below, then watch the build video to see how they became DrimiG4.
What powers the build.
Components, exact models and direct links in one place.
72 V / 20 Ah
1440 WhBattery · Tenpower 50XGThe system is powered by a 72 V, 20 Ah batterybuilt with Tenpower 50XG cells.
These use new tabless cell technology, supporting high discharge currents and fast charging. Each cell can deliver 50 A continuous discharge currentand 140 A peak current for 3 seconds — one of the reasons this G4 is so powerful.
ANT BMS
130 A · 325 A peakThe battery is monitored by a 130 A ANT BMS with a 325 A peak current rating.
Although the BMS is rated at 130 A and the controller at 200 A, in our experience this ANT BMS handles short bursts of additional load well in this build. Its 325 A peak rating reflects that short-term headroom.
The peak current rating applies to brief bursts, not continuous operation.Spintend 80H
17×4 · Upgraded version
The drivetrain is built around the Spintend 80H 17×4 motorin its upgraded version. It tolerates considerably higher temperatures — useful for this torque-wound motor, which can run hot.
We currently run it at 350 A of phase current . It is still extremely powerful, while keeping unnecessary heat and the associated energy losses down. Keeping the front wheel down is still a challenge.
Fardriver 72450
CAN version · with displayThe motor is paired with a Fardriver 72450 controller in the CAN version, together with its matching display.
We chose it because, paired with this motor, it delivers instant torque . For the response we wanted, a VESC-based setup would have been too slow off the line.
Zoom 4-piston
Hydraulic brake · designed for scooters
The stock cable-operated brake didn't work for us, so we replaced it immediately with a Zoom four-piston hydraulic brake designed specifically for scooters. This means the hydraulic hoses stay clear of all moving parts.
The original brake discs were retained, as they proved perfectly suitable. In our experience, this setup provides enough braking force for the machine's performance.