SPR23evo Sandy

Season 2023/2024

80 kW

Motor power

21 Nm

Torque

230 kg

Total weight

Engine

Motor: AMK DD5-14-10-POW synchronous motors
Maximum motor torque: 21 Nm
Maximum engine speed: 20000 rpm
Maximum motor power: approx. 35kW at 16000 rpm
Cooling through 3D-printed cooling jacket
Power transmission
Individually adjustable all-wheel drive with four wheel hub motors
Reduced stepped planetary gearbox (i=10.47)
Maximum wheel torque Tmax = 220 Nm
Maximum speed approx. 140 km/h
Maximum system output: 80 kW
Milled wheel carrier and wheel hub made from EN-AW7075

Suspension

Pushrod system, in which the springs and dampers are positioned longitudinally to the vehicle
(deflection by rocker)
Stabilizers on front and rear axle
Wheel suspension: Double triangular wishbones made from CFRP tubes and
high-strength aluminum
Ackermann geometry due to multiple connection points on the wheel carrier
adjustable
Self-developed steering gear
Self-developed 10 inch aluminum rims
Tires: Hoosier R25B 16×7.5-10

Electronics

CAN bus
Freely configurable HMI (Human Machine Interface)
Optimized cable routes (automotive standard)
Replaceable wiring harness
On-board power supply: 24 V (via self-developed LV accumulator)
Data logging, telemetry

Chassis

Full carbon monocoque in sandwich construction with foam and
Aluminum honeycomb core
Laminated front roll bar
Torsional rigidity: 4000 Nm/°
Weight: 26 kg
Aero- and weight-optimized
Firewall: 1 mm aluminum and aramid
Crashbox: Aluminum honeycomb

Aero

Further developed aerodynamics package
Total weight: 14.1 kg
Front & rear wing
Side boxes improve flow to the radiators
Downforce: 650 N at 60 km/h
Balance adjustable from neutral to 48:52

A racing car rarely drives alone.