Shell Eco-marathon United States 2026 | Hydro Dynamics

United States 2026

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US0114001 Hydro Dynamics

Warren Tech Central

Technical Inspections

Before they get on track, Prototype vehicles need to pass a series of 10 technical inspections. For some, the only goal is getting through this test. Many never even make it that far.

10/10
Complete 10/10 inspections passed

Passed

1. Telemetry

3 / 3

Passed

2. Inspection Queue Entry

4 / 4

Passed

3. Driver's Control

26 / 26

Passed

4. Vehicle Dimensions

6 / 6

Passed

5. Brakes

8 / 8

Passed

6. Driver Safety

26 / 26

Passed

7. Mechanical Vehicle Design

20 / 20

Vehicle weight < 140 kg (39 g)

Windows material (polycarbonate/Lexan) (25 f)

Electrical automotive horn, sound level > 85 dBa @ 4 m (31 a-c)

Fully closed body (25 h, k)

Solid floor & frame (25 j)

No external appendages or sharp edges (25 c)

Body panels do not change shape in wind (25 b, d)

Chain/belt guard (all rotating equipment) (34 g)

Running wheels (Pr:3/4) (25 a) i )

Rims compatible with the dimensions of the tyre (41 a-b)

Wheel compliance (41 a, 48 c)

Tyres are in good condition (49 d)

Tyre valves are accessible (49 f)

Bulkhead rigid & fire resistant (27 b, d)

Bulkhead isolates energy/driver compartment (27 a)

Wheels isolated from driver, chassis, or body (41 c)

Nothing touching wheels (e.g. batt, wires, etc...) (41 d)

Steering is efficient and has no play (32 b)

If electric steering, demonstrate default safe state (32 d)

Intuitive steering control (32 b)

Passed

8. Electrical Vehicle Design

19 / 19

Correct vehicle electrical schematic (67 c)

Max 60 V Peak (57 a)

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

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

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

Main fuse is sized correctly for the system (57 e)

Accessory circuit isolated from propulsion (65 k, m)

Elec system has proper fuse protection (57 g)

Drivers Display (57 i)

Electrical enclosures - transparent (57 j)

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 g) i)

External Estop mounting location (37 g) ii)

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

Blue triangle sticker (37 g) iii)

Passed

9. Energy Verification

18 / 18

Documentation (schematic, H2 flow, fuel cell, regulator) (65 a) i, 67 c)

No external starter battery (65 k) i)

Hydrogen cylinder firmly installed (65 b) iv)

Regulator installed correctly (65 a) iv 1)

Pipe H2 suitable, S.Steel (1.0 bar), PTFE (<1.0 bar) (65 e)

Connectors H2 OK (comp type, no Teflon) (65 e) iv)

Normally closed solenoid valve (37 f) i)

Pressure relief valve installed and set correctly (65 a) iv 4)

Pressure relief valve vents outside vehicle (65 a) iv 4)

Purge pipe vents outside or not used (65 f)

Correct system design (65 a) iv)

2 ventilation holes 5 cm² (65 c)

Hydrogen sensor at highest point (65 d)

Leak Check OK (65 d)

Flowmeter installed and functioning (65 a) v, g) iii)

JM Counting Correctly (56 c)

Emergency shutdown function (H2 Valve & Propulsion) (37 f) ii)

Efficiency of Estop (3 methods, valve/MC) (37 f) ii)

Passed

10. Final Check

4 / 4

Previous participation
Event	Vehicle category	Energy class	Rank	Result
Americas 2025	Prototype	Hydrogen Fuel Cell	-	Passed technical inspection
Americas 2024	Prototype	Hydrogen Fuel Cell	-	Did not pass technical inspection
Americas 2023	Prototype	Battery Electric	-	Did not pass technical inspection
United States 2022	Prototype	Hydrogen Fuel Cell	-	Passed technical inspection

United States 2026

US0114001 Hydro Dynamics

Warren Tech Central

Technical Inspections

1. Telemetry

2. Inspection Queue Entry

3. Driver's Control

4. Vehicle Dimensions

5. Brakes

6. Driver Safety

7. Mechanical Vehicle Design

8. Electrical Vehicle Design

9. Energy Verification

10. Final Check

Previous participation