Next-generation liquid-cooled aviation engines that are up to 30% lighter, 20% plus more fuel efficient, and projected up to 35% greater TBO interval compared to some legacy aircraft engines.
While Continental and Lycoming have iterated on WWII-era air-cooled technology for 70 years, Adept has built something fundamentally new — drawing on proven technology adapted for the demands of aviation.
This isn't incremental improvement. It's a generational leap — the same disruption Tesla brought to the automobile, applied to the engine that powers general aviation.
| Metric | Adept | Legacy |
|---|---|---|
| Weight | 320–450 lbs −40% | 450–700 lbs |
| Fuel Efficiency | 39–41 lb/(hp·h) +20% | 45–50 lb/(hp·h) |
| Cockpit Noise | 72 dBa | 101 dBa |
| Service Life | 2,500–3,000 hrs +75% | 1,600–2,200 hrs |
| Fuel Options | AvGas · MoGas · Ethanol | AvGas only |
| Max Power | 450 HP (in development) | 400 HP |
Ground-floor opportunity in a massive market disruption. Series A shares priced at $2.50 per share.
Adept has recognized the need for modern, fuel-efficient engines to power both existing and new light aircraft. Our engines feature a novel and unique architecture in General Aviation — the 120° V6 layout offers a lightweight, compact engine with high mechanical strength and integrity, excellent balance, uniform cooling, and optimal integration with the engine/propeller speed reduction unit.
Fully sequential fuel injection, a unique lubrication system, and anti-backlash and gear cush-drive mechanisms in the PSRU all contribute to creating the smoothest-running piston engine in General Aviation. Our competitive advantage stems from significant weight savings, a robust and compact design that allows for installation in a wide range of airframes, superior engine management, fuel efficiency, and reduced maintenance costs.
Our design approach is unique in General Aviation and would not be considered unusual by those familiar with the high-tech worlds of Motor Racing, MotoGP, or Aerospace and Defense. Advanced product development, rigorous testing and validation, and practical use of engine design and simulation software, finite element analysis, computational fluid dynamics, and additive manufacturing are all essential in creating our superior products.
The entry-level Adept powerplant delivering 250 HP with the liquid-cooled, electronically managed architecture that sets Adept apart. An ideal replacement for legacy 235–260 HP air-cooled engines.
280 HP of naturally aspirated performance in the same lightweight V6 platform. An excellent replacement for legacy 280–300 HP air-cooled engines with a significant weight and efficiency advantage.
The flagship performance engine for high-altitude capability and sustained power output. Turbocharged for serious cross-country and performance builders. The primary engine in OEM partnership discussions.
Maximum turbocharged output for demanding applications — high-performance experimental aircraft, twin-engine platforms, UAS, and defense use cases requiring sustained high power at altitude.
A higher-displacement turbocharged variant currently in development, targeting applications where 425 HP is required — including larger experimental platforms, multi-engine configurations, and advanced UAS.
All engines feature sequential fuel injection, dry sump lubrication, liquid & oil cooling, and Bosch electronic ignition. Contact us to discuss your specific application.
| Performance Metric | Adept Engines | Continental / Lycoming | Advantage |
|---|---|---|---|
| Weight | 320–450 lbs | 450–700 lbs | 40–50% lighter |
| Fuel Efficiency | 39–41 lb/(hp·h) | 45–50 lb/(hp·h) | ~20% more efficient |
| Cockpit Noise | 72 dBa | 101 dBa | 29 dBa quieter |
| Time Between Overhaul | 2,500–3,000 hours | 1,600–2,200 hours | Up to 75% longer |
| Fuel Compatibility | AvGas · MoGas · Ethanol | AvGas only | Multi-fuel ready |
| Ignition System | Bosch ECU / Electronic | Magneto-based | Precision timing |
| Max Power Available | 600 HP | 400 HP | 50% higher ceiling |
| Cooling Architecture | Liquid cooled | Air cooled | Superior thermal control |
Suitable for both tractor and pusher configurations, the Adept engine's compact, liquid-cooled architecture opens doors to applications that legacy air-cooled engines simply cannot serve.
Common questions from builders, pilots, and engineers. If you have additional queries, contact us.
Imagine investing in Tesla when the automotive industry was dominated by century-old technology. Adept Propulsion Technologies represents the same generational disruption — a market that represents $14 billion plus…
Return projections are illustrative scenarios based on comparable market disruptions and are not guarantees of future performance. All investments involve risk. Prospective investors should review all offering documents carefully.
This page contains forward-looking statements and does not constitute an offer to sell or a solicitation of an offer to purchase securities. Any offering of securities will be made only by means of a private placement memorandum or other offering documents to qualified investors. All investments involve risk, including the possible loss of principal.
Tell us about your project. Our engineering team will follow up within 48 hours with pricing, availability, and technical specifications tailored to your application.
Adept's team has spent decades proving that aviation engines can be fundamentally better. Every person here chose this mission because they believe in what we're building.
Lee founded Adept Propulsion Technologies in 2020 and acquired Adept Airmotive, a South African aviation engine company originally founded in 2003 by Richard Schulz, the company's original founding engineer. Through that acquisition, Lee brought more than 20 years of engine R&D, an operational manufacturing facility, and a proven product line under the Adept Propulsion umbrella — then established the US entity to drive the technology into the American market. His leadership has since focused on building the commercial, legal, and operational foundations needed to scale what Adept Airmotive pioneered into a globally competitive aviation engine business.
Richard co-founded Adept and secured the company's foundational intellectual property position, establishing the legal and strategic framework that underpins the business today. He leads investor relations, corporate governance, strategic partnerships, and all capital formation activities — including the current Series A raise and active international licensing negotiations. Richard is the primary point of contact for investors and institutional partners, and is responsible for translating Adept's technical achievements into the commercial and legal structures needed to scale them.
A long-standing and respected member of the Adept team, Angela brings deep financial expertise and institutional knowledge to the company's financial leadership. She currently provides fractional CFO support and services to Adept, overseeing financial planning, reporting, and controls as the company scales its US operations. Her continuity with the business gives her a unique perspective on Adept's growth trajectory and capital requirements, and her involvement provides investors with confidence in the rigor of the company's financial management.
Adept's engineering team combines foundational R&D experience with hands-on manufacturing and integration expertise — the combination that turns advanced designs into flying aircraft.
One of Adept's original engineering contributors, Raymond has been part of the company's technical development since its earliest days. He carries responsibility for product design, manufacturing processes, and day-to-day operations — the disciplines that determine whether an engine design becomes a reliable, producible product. His deep familiarity with the engines' architecture, combined with decades of hands-on manufacturing experience, makes him central to Adept's ability to deliver on its performance claims at production scale.
Neil contributes across the full spectrum of bringing Adept engines into real aircraft — from manufacturing execution through airframe integration to ongoing product advancement. His work is directly visible in the flying aircraft that validate Adept's technology today: the Lancair, Velocity, as well as other integrations that demonstrate the engines' real-world performance. Neil's focus on future product advancements ensures that Adept's engines continue to improve as field experience accumulates and customer feedback confirms development.
As Adept scales US manufacturing and expands into new markets, we're adding talented people who share our conviction that aviation deserves better. If that's you, we'd like to hear from you.
Adept Propulsion Technologies was born from a simple conviction: aviation deserves better engines. Not marginally better — fundamentally better. The kind of improvement that only comes from starting with a clean sheet and the courage to discard 80 years of convention.
"The question Richard asked was simple and radical at the same time: what would a general aviation engine look like if no one had ever built one before?"
Richard Schulz founded Adept Airmotive in South Africa in 2003 and spent the better part of two decades proving that the general aviation industry's reliance on air-cooled, magneto-ignition engines was a choice, not a necessity. He brought with him 25 years of Formula racing engine design experience — a discipline where weight, thermal efficiency, and reliability are not aspirational goals but survival requirements. That background gave him both the technical toolkit and the intellectual permission to start over.
The liquid-cooled architecture, the multi-fuel capability, the extended service life — the fundamentals that distinguish every Adept engine today trace directly to Richard's original design philosophy. He didn't iterate on what Continental and Lycoming had built. He asked what an aviation engine should be, and then built it.
Richard passed away in 2025. His loss is felt deeply by everyone who worked alongside him and by the broader community of builders and pilots who understood what he was trying to accomplish. But the measure of a founder's work is not whether it survives them — it's whether it grows beyond them. By that measure, Richard's contribution is very much alive.
The engineering team he helped build has carried the technology further than the original designs envisioned. The Adept engines flying today — and those in development — reflect years of advancement, refinement, and hard-won field experience that go well beyond the foundation Richard laid. Adept Propulsion Technologies is not a company preserving a legacy. It is a company accelerating one.
We are grateful for what Richard started. We are committed to what it becomes.
One of the privileges of flying is that we get to see the planet from a different perspective — and Adept has a unique perspective on the impact that aviation should have on our environment: as little as possible.
Our investment in clean manufacturing technology, in building engines that run on readily available lead-free fuels including ethanol blends, and that meet current ASTM and FAA supply chain rules for Sustainable Aviation Fuels — engines that are quiet, with the lowest exhaust emissions and carbon footprint in both manufacture and operation — is our investment in the future of aviation.
We also believe that flying should be affordable and accessible to those who want to take to the skies. In every sense, flying should not cost us the earth.