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

United States 2022

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325

US0118002 Wheat Ridge STEM Blue

Wheat Ridge High School

Prototype P Battery Electric Battery Electric

Results

Attempt 1

79.6

49.4

km/kWh

mi/kWh

Best attempt

Current Rank

4th / 4

3 126.5 km/kWh 78.6 mi/kWh +59.0%

4 79.6 km/kWh 49.4 mi/kWh

Technical Inspections

Before they get on track, Prototype vehicles need to pass a series of 11 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

11/11
Complete 11/11 inspections passed

Passed

1. Inspection Queue Entry

3 / 3

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 (> 50kg) - 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 (> 50kg) - 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

6 / 6

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

Crumple space-protect from front/side impact

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

9 / 9

Passed

7. Visibility

9 / 9

Passed

8. Exit

2 / 2

Passed

9. Mechanical Vehicle Design

19 / 19

Fully closed body

Quality of body driver collision protection

Front Crumple Zone = 100 mm

Solid floor & frame

No external appendages or sharp edges

Body panels do not change shape in wind

Internal/ext'l opening mech effective/intuitive

Method of opening marked with red arrow

No tape outside to seal body cover

Bulkhead rigid & fire resistant

Bulkhead isolates energy/driver compartment

Chain/belt guard

Running wheels (Pr:3/4, UC:4)

Wheels dimensions & matching rim OK

Wheels isolated from driver, chassis, or body

Nothing touching wheels (e.g. batt cables..)

Steering efficiency no play

If indirect/electr, safe b/up (man. override)

If electronic steering no joystick

Passed

10. Electrical Vehicle Design

12 / 12

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

Charger built for battery

Charging Protection (fire blanket, Lipo bag)

Solid metal containment tray OR Lipo bag

Capacity < 1000 Wh

Passed

11. Energy Verification

19 / 19

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

Li-Ion Battery System

Only two terminals

Batt + and - isolated from frame and body

Self-built batt - cell level current protection

In-vehicle Battery Management System

Motor/Controller System

Purpose built motor controller

Emergency shutdown

Internal/External Estop Switch

Latching push button (no push/pull levers)

Physical Estop

Efficiency of emergency shutdown

Dead man's switch

Blue triangle sticker

Joulemeter

Installation in engine compartment

Read/reset from outside

Position in circuit (before motor controller)

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2025	Urban Concept UC	Hydrogen Fuel Cell H2	-	Passed technical inspection
Americas 2024	Urban Concept UC	Battery Electric Battery Electric	-	Passed technical inspection
Americas 2023	Urban Concept UC	Hydrogen Fuel Cell H2	-	Passed technical inspection

United States 2022

US0118002 Wheat Ridge STEM Blue

Wheat Ridge High School

Results

Attempt 1

Attempt 2

Current Rank

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

Previous participation