Shell Eco-marathon Americas 2023 | Cornell Electric Vehicles

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US0019002 Cornell Electric Vehicles

Cornell University

Technical Inspections

Before they get on track, Urban Concept vehicles need to pass a series of 13 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

13/13
Complete 13/13 inspections passed

Passed

1. Inspection Queue Entry

4 / 4

Passed

2. Driver's Control

23 / 23

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

Helmet label readable - Primary Driver (21 a)

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

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

Racing suit (s) / Gloves - Primary Driver (21 a, c)

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)

Appropriate motorsports helmet (s) - Reserve Driver (21 a)

Helmet label readable - Reserve Driver (21 a)

Helmet has no cracks/indentations - Reserve Driver (21 a)

Visor is clear and has no cracks - Reserve Driver (21 b)

Racing suit (s) / Gloves - Reserve Driver (22 a, c)

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

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

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

Ballast required?

Ballast based on lightest driver (20 c)

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

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

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

Partner sticker both sides (4 a-g)

Other stickers < 400 cm² (4 a-g)

Passed

3. Vehicle Weight

2 / 2

Passed

4. Vehicle Dimensions

11 / 11

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 comparment > 880 mm (45 f)

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

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

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

Passed

5. Seat Belts & Roll bar

13 / 13

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

Safety Belts - chassis fixing (29 d)

Crotch strap under body (29 b)

Top strap at 10° angle (29 b)

Length adjustor high enough for adjustement (29 b)

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

Safety belt strenght verified (29 d)

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)

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

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

Passed

6. Brakes

10 / 10

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

Ergonomy (both hands on steering mech.) (43 a)

Effectiveness Ramp Test (43 b)

4 disc hydraulic brake (51 a)

X design or front / rear (51 b)

Brake pedal 2,500 mm² (51 a)

Parking brake (50 N) (51 e)

Disc thickness > 3 mm (51 a)

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

Comm brake sys (manuf's docs). Not bicycle (51 a)

Passed

7. Visibility

8 / 8

Passed

8. Exit

2 / 2

Passed

9. Mechanical Vehicle Design

27 / 27

Passed

10. Electrical Vehicle Design

15 / 15

Correct vehicle electrical schematic (58 c)

Electrical enclosures - transparent (57 j)

Only one Battery, single physical package (57 b)

Max 48 V nominal (60 V Peak) (57 a)

Capacity < 1000 Wh (57 d iv)

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

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

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

Charger built for battery (57 d iii)

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

Electrical wiring connections visible/no splices (57 k)

Elec system has proper fuse protection (57 e)

JM Installation in engine compartment (56 c)

JM Correct circuit location (56 d)

JM Counting Correctly (56 d)

Passed

11. Energy Verification

12 / 12

Doc'n (schematic, Batt/BMS, m.controller) (58 c)

Only two terminals (57 b)

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

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

In-vehicle Battery Management System (57 d i)

Purpose built motor controller (67 a)

Blue triangle sticker (37 f (iii))

Dead man's switch (37 h)

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

Internal/External Estop Switch (37 f)

Physical Estop (37 d)

Efficiency of emergency shutdown (37 a-c)

Passed

12. Telemetry

8 / 8

Passed

13. Final Check

3 / 3

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2024	Urban Concept	Battery Electric	-	Passed technical inspection
United States 2022	Prototype	Battery Electric	-	Passed technical inspection

US0019002 Cornell Electric Vehicles

Cornell University

Technical Inspections

1. Inspection Queue Entry

2. Driver's Control

3. Vehicle Weight

4. Vehicle Dimensions

5. Seat Belts & Roll bar

6. Brakes

7. Visibility

8. Exit

9. Mechanical Vehicle Design

10. Electrical Vehicle Design

11. Energy Verification

12. Telemetry

13. Final Check

Previous participation