About

Flatline Dynamics is an engineering-led design lab building understated, modular hardware. Quiet on the outside. Thoughtful on the inside.

Modular systemsServiceable by designField-led iterationStealth aesthetic
Mission

Build equipment that earns its place.

Most hardware fails in predictable ways: weak interfaces, disposable construction, and “features” that don’t survive real use. We design from the failure modes backwards. The goal is simple: modular equipment that lasts, stays discreet, and can be repaired.

Design promise
  • Serviceability

    Fasteners over glue. Replaceable wear parts. Designed to be maintained.

  • Modularity

    Add capability when you need it. Remove it when you don’t. Core stays clean.

  • Understated

    Sleeper aesthetic. Discreet capability. No costume energy.

  • Iteration

    Field-led testing. Tight feedback loops. Ship only what we can stand behind.

What we build

We build a small number of systems at a time. Each one is designed to scale with accessories, spare parts, and documentation - not just marketing.

Keystone 25

Stealth carry system

A modular 25L daypack designed around repairability, discreet capability, and multi-role use.

Sentinel

Minimal HUD platform

R&D into a helmet-mounted, minimalist heads-up display approach focused on usable information.

Next

Modules + spare parts

Accessories, repair kits, and documentation that make the core products more adaptable over time.

Coming soon.

How we work

01 - Constraint first

Start with the real constraints: access, durability, comfort, repair, and the boring failure modes.

02 - Prototype fast

Build, test, refine. Keep the loop tight. Don’t over-polish what hasn’t earned it.

03 - Document properly

Service notes, spare parts thinking, and honest specs. Equipment should come with a paper trail.

Serviceability is the point

We design like you’ll keep this for years. That means replaceable components, sensible construction, and avoiding unnecessary lock-in. When something wears out, the default outcome should be a repair - not a replacement.

Collaboration

We’re open to testing, manufacturing conversations, and sensible partnerships. If you’ve got relevant experience, materials, or a capability we should know about - send it through.

Sponsorship: Official sponsor of UWE Gliding Club (see footer).