XRDi HISTORY

  • Development of the MCDi technology

    MCDi inventor, Andy Allen, has a deep history in high performance 2-stroke engines. Andy worked for Pratt and Whitney in Connecticut and then started a company (AMW Inc.) to manufacture and design 2-stroke racecar engines. AMW, Inc. won 10 national championships with its engine designs. AMW then merged with Cayuna (which produced ultralight engines and a gasoline engine for the military M17 decontamination unit) to form 2SI in Beaufort, SC. 2SI manufactured 2-stroke engines for the military, Andy developed the MCDi technology and eventually split off to form XRDi in Beaufort, SC.

  • Solving drone engine problem

    From that point Andy and XRDi dealt almost exclusively with military prime contractors solving drone engine problems and providing a Heavy fuel solution to drone propulsion. Eventually this became know as the multifuel solution even though none of the competing technologies were truly multifuel solutions. They were primarily making a gasoline engine burn heavy Diesel fuel or jet fuels. The MCDi engines however could burn any fuel without any adjustment or retuning. This was not really a requirement; just a great innovation in solving the heavy fuel needs for drone engines.

Initial development of the MCDi technology for the M17 engine decontamination unit

2,000 units deployed
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2000

Over $35 million over 15 years R & D funding from military contractors to develop MCDi technology.

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2000-2014

Design project for 2 stroke with Mercury for 777 jet ski engine

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2001
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EzGo (Textron):

Developed and tested multifuel golf cart engine with EzGo

Harley Davidson:

Sidevalve Motorcycle Engine

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2001

On the shoulders of giants

Ongoing development relationship with Mercury Marine
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2004-2006

Dr. Brian Callahan

Dr. Callahan earned his Bachelor of Science degree in Mechanical Engineering from Cornell University in 1993. His subsequent focus on fuel droplet combustion in zero gravity, earned his Master of Science degree in Aerospace Engineering.

While studying for a Ph.D. in Mechanical Engineering at Queen's University Belfast in Belfast, Northern Ireland his research concentrated on the effects of in-cycle speed fluctuations on small two-stroke and four-stroke engines.
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2005 - 2008
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Siemens, XRDi, USC partnership to develop hydrogen-powered engines

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2005-2012
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Developed first MCDi APU solutions

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2008
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Supplied engines to Lockheed Martin Advanced Development Programs (ADP) “Skunk Works” program

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2008

Dr. Benjamin Sheaffer

Engineering team member

Ben has spent forty-five years in the design and development of high performance two-stroke spark-ignition, diesel and rotary engines. He has particular expertise in cylinder, piston, piston rings, direct cylinder injection for reducing exhaust emissions and engine development.
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2011-2012
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Strategic alliance with Ricardo to develop an outboard engine meeting military NBOE (non-gasoline burning outboard engine) requirements

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2012
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Partnered with Jabil – down selected to supply replacement engine for Shadow drone for US Army

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2013-2015
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Worked with L3 Aurora on bid for Abrams tank APU

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2016-2017
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american aerospace

PAE/ISR and AATI

Engine development for the Resolute Eagle UAV
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2019

Contact us

  • To license our engine designs
  • To collaborate on engine development
  • To modify our designs to your specific needs

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