Powertrain Engineering
POWERTRAIN
The Engine Families
Four engine families. Zero shared compromises. Every motor purpose-engineered from a clean sheet.
Schubert Motors does not borrow powertrains. Each engine family was designed from first principles around its target vehicle's performance requirements, weight budget, and hybrid integration architecture. The result is four distinct powertrains that share no components and compromise nothing.
Combustion Core of the Flagship
MAELSTROM — THE CYCLOTIS ENGINE
The Maelstrom is Schubert's most extreme combustion unit — a 4.5-liter flat-plane crank twin-turbo V8 designed exclusively for the Cyclotis hypercar. It operates as one leg of a quad-motor hybrid system delivering 2,500 combined system horsepower.
PLACEHOLDER_TECHNICAL: specific peak power split between combustion and electric systems (estimated ~1,400 hp combustion + ~1,100 hp electric combined) — pending final calibration data from powertrain engineering.
The flat-plane crank configuration enables a more symmetrical exhaust manifold layout, reducing turbo lag and improving mid-range response. Hot-V twin-turbo placement — turbos mounted inside the V — shortens intake path and reduces thermal load on surrounding components.
Specifications
Wide Power Band, Hybrid-Ready
INFERNO-S — THE FOUNDRY 427 ENGINE
The Inferno-S powers the Foundry 427 — Schubert's TriVolt hybrid platform. Unlike the Maelstrom's peak-output character, the Inferno-S is tuned for a wide, usable power band that integrates seamlessly with the TriVolt's rear transaxle motor and dual front hub motors.
PLACEHOLDER_TECHNICAL: specific Inferno-S displacement and redline figure — last confirmed as twin-turbo V8 producing approximately 900 hp combustion, 1,500 hp combined with TriVolt.
The rear transaxle mounting position — engine longitudinally behind the driver, gear cluster and motor integrated into a single casting — allowed Schubert engineers to package the motor without adding to floor height or wheelbase.
Specifications
One Block. Different Characters.
TEMPEST — THE SHARED GT PLATFORM
The Tempest is Schubert's volume performance engine — a 4.0-liter twin-turbo V8 used across the Meridian GT and Summit platforms. Same architecture, different ECU calibration and turbo specification, yielding distinct performance characters suited to each vehicle.
This is deliberate. A grand tourer demands long-legged torque and smooth delivery. A performance SUV needs response across a wide RPM range under varying loads. Tempest achieves both through software-defined engine mapping and platform-specific turbocharger sizing.
PLACEHOLDER_TECHNICAL: Tempest specific output figures for Summit variants not yet confirmed in SPEC.md — Meridian GT confirmed at 620–780 hp.