Complete vehicle development from a single source

Overall technical responsibility instead of interface losses

In custom vehicle projects, costly problems often don't arise where a single discipline fails technically. They arise where decisions regarding styling, packaging, structure, chassis, materials, manufacturing, or homologation haven't been consistently coordinated.

This risk is particularly acute for special-purpose, commercial, emergency and performance vehicles: Existing platforms are modified, additional functions are integrated, load cases are shifted and components are developed for production volumes where classic mass production processes only work to a limited extent.

Overall technical responsibility therefore does not simply mean offering as many services as possible from a single source. It means recognizing dependencies early on and making consistent technical decisions throughout the entire product development process.

Complete vehicle development starts with the coordinated definition of vehicle architecture, packaging, assemblies and technical interfaces.

Changes rarely have an effect in only one place.

A change to the vehicle structure can simultaneously affect weight, center of gravity, stiffness, chassis tuning, packaging, joining technology and approval.

A new exterior module must not only fit the vehicle geometrically. It needs defined attachment points, robust load paths, manageable tolerances, a suitable manufacturing process, and an assembly sequence that also works in later installation.

For roof, door, or flap systems, kinematics, sealing, actuators, structure, and ergonomics also come into play. Modifications to the chassis, with their additional mass or different center of gravity, in turn alter the requirements for suspension, damping, axle loads, and structure.

These interactions must be evaluated during the concept development phase.

Those who only recognize this with the first vehicle no longer just correct details – but often fundamental decisions that have already been made.

From operational requirements to robust technical boundary conditions

Therefore, at the beginning of a project, there is not the CAD model, but the technical translation of the intended use.

Relevant factors include:

• real load and usage profiles

• Package and available installation space

• Target masses and center of gravity positions

• Functional and safety requirements

• suitable materials and manufacturing processes

• Assembly and service concept

• Approval and homologation requirements

• planned quantity and scalability

These boundary conditions result in a vehicle or assembly architecture, on the basis of which design, calculation, manufacturing and testing can work in a targeted manner.

This step is crucial, especially for vehicle derivatives and special conversions. This is because the original platform was often developed for different load cases, functions, and operating conditions.

Design and simulation must prepare for real-world implementation.

Virtual development only reduces effort if the right questions are investigated.

Simulation and CAE, for example, help to evaluate load paths, stiffness, strength, vibration behavior or crash requirements even before physical components are built.

However, the crucial factor is the connection to the design and subsequent manufacturing.

A mathematically optimal structure is of little value if it:

• can only be produced with disproportionate effort,

• Critical tolerances are created,

• is difficult to assemble or

• The necessary interfaces in the real vehicle were not taken into account.

Therefore, calculation, CAD and manufacturing process must work together iteratively.

FEA analysis of a CFRP monocoque to evaluate stiffness, load paths and structurally critical areas.

Select materials according to function – not preference.

Metal, aluminum, plastic, CFRP and hybrid material systems solve different tasks.

Therefore, the question is not: Which material is fundamentally the best?

But rather: Which material best fulfills the function, load case, weight target, quantity and economic constraints?

A highly stressed structure may require a metallic solution. Fiber composites can be advantageous for complex visible components or weight-critical parts. Plastic solutions can offer benefits for housings, covers, or functionally integrated components.

Overall technical responsibility therefore also means not making material decisions in isolation, but always together with design, joining technology, tooling concept and planned quantity.

Assembly of a hybrid vehicle structure combining CFRP and metallic components, engineered around function, load cases and manufacturing requirements.

The prototype is a development tool – not a presentation object.

Even comprehensively digitally developed assemblies must prove themselves physically.

Prototype construction reveals questions that can only be assessed to a limited extent using CAD:

• Are the components actually accessible?

• Are the assembly sequences working as intended?

• Can tolerances be controlled?

• Do the cables, actuators, and fasteners fit into the designated installation space?

• How does the assembly behave in the actual vehicle?

Those who closely link design and prototyping can directly feed these insights back into development.

This means that the initial setup does not become the end point of the construction, but rather a targeted validation stage on the way to a reproducible solution.

• 

• 

• 

• 

• 

• 
• 
• 
• 
• 

From functional assembly to small series production

A working prototype initially answers only one question:

Does the concept work?

For the small production run, additional ones will be added:

• Is the solution reproducible?

• Are manufacturing tolerances defined and controllable?

• Are the tools and processes suitable for the planned production volume?

• Is the assembly efficient and robust?

• Are quality assurance and technical documentation structured accordingly.

This is precisely where the advantage becomes apparent when development and production are not viewed separately.

Constructive decisions can be aligned with real manufacturing conditions early on, instead of having to be industrialized only after development is complete.

Overall technical responsibility at VELA

The VELA Group combines vehicle development with expertise in metal, composites, plastics and hybrid material systems.

This allows us to support projects from the technical conception through design and simulation to prototype construction, integration and the production of assemblies and small series.

From the digital vehicle concept to real-world testing: only the complete vehicle shows whether development, integration and calibration work as intended.

Depending on the project, we not only take on individual development packages, but also coordinate the overall technical process and bring together different disciplines to create a feasible solution.

This does not reduce the technical complexity of a project.

But it reduces the number of unresolved handovers, avoids conflicting assumptions between individual trades, and makes it possible to examine decisions earlier for their impact on design, manufacturing, assembly, testing, and approval.

For complex vehicle projects, this is often more crucial than the isolated optimization of individual components.

Are you developing a customized vehicle, a new vehicle variant, or a complex assembly? Talk to us about the technical requirements and the planned path to real-world implementation.