Shell Eco-marathon Americas 2025 | Duke Electric Vehicles

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US0021001 Duke Electric Vehicles

Duke University

Technical Inspections

Before they get on track, Urban Concept vehicles need to pass a series of 12 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

5/12
In progress 5/12 inspections passed

Passed

1. Inspection Queue Entry

10 / 10

Bound/Printed documentation (67 c)

Telemetry equipment installed (67 c)

Charging Protection (fire blanket, Lipo bag) (24 l)

Charger (57 d iii)

SHELL logo front / both sides (4 a-c)

Race number front / both sides (4 a-c)

Partner sticker both sides (4 a-c)

Lift here arrow stickers (26 f)

Opening mechanism stickers (30 c)

Other stickers < 400 cm² (4 d)

Must pass again

2. Driver's Control

9 / 11

Appropriate motorsports helmet - Primary Driver (21 a-f)

Helmet label readable - Primary Driver (21 c)

Helmet has no cracks/indentations - Primary Driver (21 c)

Visor is clear and has no cracks - Primary Driver (21 d)

Racing suit (s) / Gloves - Primary Driver (21 d)

Single piece fire retardant racing suit - Primary Driver (22 a)

Shoes; socks & balacava/FRC - Primary Driver (22 b, d)

Driver weight (> 70kg) - Primary Driver (20 a)

Ballast required?

Ballast based on lightest driver (20 c)

Ballast of suitable type, proper location, sealed (20 b)

Passed

3. Vehicle Weight

2 / 2

Must pass again

4. Brakes

8 / 11

Brake documentation (67 c ii)

Brake rotors point in direction of wheel rotation (43 a)

Ergonomy (both hands on steering mech.) (32 c)

Effectiveness Ramp Test - Dynamic (51 e)

4 disc hydraulic brake (51 a)

X design or front / rear (51 b)

Brake pedal 2,500 mm² (51 a)

Parking brake must keep vehicle stationary on ramp (51 d)

Disc thickness > 3 mm (51 a)

One dual master cylinder or 2 master cyls (51 c)

Commercial brake system, not bicycle (51 a)

Passed

5. Vehicle Dimensions

10 / 10

Height 1000 - 1300 mm (45 a)

Width 1200 - 1300 mm (45 b)

Length 2200 - 3500 mm (45 c)

Track width > 1000 mm (front) (45 d)

Track width > 800 mm (rear) (45 d)

Wheelbase > 1200 mm (45 e)

Ground clearance > 100mm (45 g)

Drivers compartment > 880 mm (45 f)

Width at drivers shoulder > 700 mm - Primary Driver (45 f)

Two Doors - Min 500 x 800 mm (46 d)

Must pass again

6. Seat Belts, Roll bar & Exit

8 / 18

Safety belt must be designed for motorsports use (29 g)

Mounting points are clearly accessible for inspection (29 e)

Safety Belts ≥ 5 mounting points (29 a-b)

Safety Belts - chassis fixing (29 d)

Must have 5 independent belts attached to structure (29 a)

Crotch strap under body (29 b)

Top strap angle (29 b)

Safety belt must be in straight line between mounting point and shoulder (29 f)

Length adjustor high enough for adjustement (29 b)

Safety belt has a tight fit (no slack) (29 c)

No modifications of safety belt (29 h)

Safety belt strength verified (29 d)

Crumple space-protect from front/side impact (25 a ii)

Quality of body driver collision protection (26 a)

Roll bar resist 70 kg all directions (26 d)

Roll bar 50 mm > driver's head - Primary Driver (26 b)

Roll bar width > shoulders - Primary Driver (26 c)

Driver exit < 10 seconds - Primary Driver (30 a-d)

Passed

7. Visibility

6 / 6

Must pass again

8. Mechanical Vehicle Design

25 / 32

Must pass again

9. Electrical Vehicle Design

14 / 21

Correct vehicle electrical schematic (67 c)

Charger built for battery (57 d iii)

Charging Protection (fire blanket, Lipo bag) (24 h)

Capacity < 1000 Wh (57 d iv)

Max 60 V Peak (57 a)

Only one Battery, 2 terminals, single physical package (57 b, i)

Solid metal containment tray OR Lipo bag (57 d vi)

Batt mount firm, behind b/head, not under seat (57 c)

Main fuse < 300 mm from +ve terminal ADD fuse size (57 e)

Elec system has proper fuse protection (57 e)

Electrical enclosures - transparent (57 j)

Wiring organized and safe (27a, 57 k)

Electrical wiring connections visible/no splices (57 k)

JM Installation in engine compartment (56 c)

JM visible and accessible from outside (56 b)

JM Correct circuit location (56 c)

JM Counting Correctly (56 c)

Internal Estop Switch (37 f i)

External Estop mounting location (37 f ii)

Latching External Estop push button (no push/pull levers) (37 g)

Blue triangle sticker (37 f iii)

Passed

10. Energy Verification

12 / 12

Documentation - Schematic (67 c)

Documentation - Battery/BMS (67 c)

Documentation - Motor controller (67 c)

Documentation - Motor size (67 c)

Self-built battery - cell level current protection (57 d ii)

In-vehicle Battery Management System (57 d i)

Purpose built motor controller (66 a)

JM Position in circuit (56 d)

Estop Function - Physical Isolation of Batt (37 d)

Dead man's switch (37 h)

Efficiency of emergency shutdown (37 a-c)

Battery + and - isolated from frame and body (57 f)

Must pass again

11. Telemetry

2 / 8

Not yet started

12. Final Check

0 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2023	Prototype	Battery Electric	2	473.26km/kWh 294.07mi/kWh
United States 2022	Prototype	Battery Electric	-	Passed technical inspection

US0021001 Duke Electric Vehicles

Duke University

Technical Inspections

1. Inspection Queue Entry

2. Driver's Control

3. Vehicle Weight

4. Brakes

5. Vehicle Dimensions

6. Seat Belts, Roll bar & Exit

7. Visibility

8. Mechanical Vehicle Design

9. Electrical Vehicle Design

10. Energy Verification

11. Telemetry

12. Final Check

Previous participation