Shell Eco-marathon United States 2022 | Wheat Ridge STEM Gold

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US0118001 Wheat Ridge STEM Gold

Wheat Ridge High School

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.

9/12
In progress 9/12 inspections passed

Not yet started

1. Inspection Queue Entry

0 / 2

Passed

2. Driver's Control

23 / 23

Appropriate motorsports helmet (s) - Primary Driver

Helmet label readable - Primary Driver

Helmet has no cracks/indentations - Primary Driver

Visor is clear and has no cracks - Primary Driver

Racing suit (s) / Gloves - Primary Driver

Single piece fire retardant racing suit - Primary Driver

Shoes; socks & balacava/FRC - Primary Driver

Driver weight (> 70kg) - Primary Driver

Appropriate motorsports helmet (s) - Reserve Driver

Helmet label readable - Reserve Driver

Helmet has no cracks/indentations - Reserve Driver

Visor is clear and has no cracks - Reserve Driver

Racing suit (s) / Gloves - Reserve Driver

Single piece fire retardant racing suit - Reserve Driver

Shoes; socks & balacava/FRC - Reserve Driver

Driver weight (> 70kg) - Reserve Driver

Ballast required?

Ballast based on lightest driver

Ballast of suitable type, proper location, sealed

SHELL logo front / both sides

Race number front / both sides

Partner sticker oth sides

Other stickers < 400 cm²

Passed

3. Vehicle Weight

2 / 2

Passed

4. Vehicle Dimensions

11 / 11

Passed

5. Seat Belts & Roll bar

13 / 13

Safety Belts ≥ 5 mounting points

Safety Belts - chassis fixing

Crotch strap under body

Top strap at 10° angle

Length adjustor high enough for adjustement

Safety belt has a tight fit (no slack)

Safety belt strenght verified

Quality of body driver collision protection

Roll bar resist 70 kg all directions

Roll bar 50 mm > driver's head - Primary Driver

Roll bar width > shoulders - Primary Driver

Roll bar 50 mm > driver's head - Reserve Driver

Roll bar width > shoulders - Reserve Driver

Passed

6. Brakes

10 / 10

Passed

7. Visibility

4 / 4

Passed

8. Exit

2 / 2

Passed

9. Mechanical Vehicle Design

27 / 27

Passed

10. Electrical Vehicle Design

20 / 20

Correct vehicle electrical schematic

Electrical wiring connections visible/no splices

Elec system has proper fuse protection

Electrical enclosures - transparent

Only one Battery, single physical package

Max 48 V nominal (60 V Peak)

Batt mount firm, behind b/head, not under seat

Main fuse < 300 mm from +ve terminal

Accessory battery

Acceptable electrically powered devices

Supercapacitor (SC) for energy storage

Fuse on +ve of SC, <300mm, size OK

Super Cap voltage > system V

External connectors

Electrical Isolation from body/frame

Joulemeter

Installation in engine compartment

Correct circuit location (after battery)

Fuse on +ve of FC, <300mm, size < surf area

Accessory circuit isolated from propulsion

Must pass again

11. Energy Verification

12 / 19

Doc'n (schematic, H2 flow, fuel cell)

Correct system design

Pipe H2 suitable, S.Steel (1.5b), PTFE (<1.5b)

Connectors H2 OK (comp type, no teflon)

2 ventilation holes 5 cm²

Hydrogen sensor at highest point

Normally closed solenoid valve

Hydrogen cylinder firmly installed

Installed Press. valve must vent outsdie vehicle

Flowmeter installed and functioning

Telemetry H2 flowmeter installed

Purge pipe vents outside or not used

Emergency shutdown

Internal/External Estop Switch

Latching push button (no push/pull levers)

Efficiency of Estop (3 methods, valve/MC)

Dead man's switch

Blue triangle sticker

Joulemeter in place for Supercap

Must pass again

12. Telemetry

4 / 7

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2025	Prototype	Hydrogen Fuel Cell	2	193.19km/m3 120.04mi/m3
Americas 2024	Prototype	Hydrogen Fuel Cell	-	Passed technical inspection
Americas 2023	Prototype	Battery Electric	9	137.71km/kWh 85.57mi/kWh

US0118001 Wheat Ridge STEM Gold

Wheat Ridge High School

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

Previous participation