From its Syracuse, New York manufacturing plant, D&D Motor Systems makes high-performance DC motors and controllers for electric vehicles and specialized equipment. Founded by Michael and Eric Dieroff, the company brings more than 50 years of combined expertise to custom drive-system engineering, motor testing, and in-house manufacturing. Its U.S.-made products are used in applications ranging from golf carts and neighborhood electric vehicles to airport support and hydraulic equipment.
Made in the USA
certification
Veteran Owned Business
certification
D Tech ServiceFounded in Glastonbury in 1979 by Dennis and Mary Alice Tulimieri, D Tech Service designs and manufactures electrical motor-control systems while providing engineering and factory-trained field service for VFDs. Now operating from a 40-person Cromwell facility under three longtime employees who purchased the company in 2022, it supports customers across New England and the New York region with custom, tested systems and round-the-clock service. Its facility is ISO 9001:2015 and UL 508A certified.ROCKVILLE, MD
Duryea TechnologiesFounded in 1996, Reading-based Duryea Technologies designs and manufactures brushless DC motors, power electronics, generators and rotary engines in the United States. Its niche is engineered-to-order systems for OEMs, built around proprietary low-voltage SolidSlot motor technology and flexible production that runs from prototypes to low- and mid-volume manufacturing. Duryea also develops practical energy systems such as the MODE biogas generator for farms and wastewater-treatment plants.READING, PA
DRR USAFounded in 2000, DRR USA is a Brunswick, Ohio company that grew from a focus on safer kids’ ATVs into a racing-rooted electric-vehicle manufacturer. Its vehicles serve families as well as commercial and government users, with the company holding a patent for its drivetrain and removable battery system.BRUNSWICK, OH
Delta Systems IncFounded in a Twinsburg garage in 1972, Delta Systems designs and manufactures electronic components for outdoor power equipment and other demanding vehicles and machines. The independently owned U.S. manufacturer now operates from a 133,000-square-foot Streetsboro headquarters with more than 200 employees, producing components in-house through a vertically integrated operation. Delta’s products are made in the United States and supported by ISO 9001:2015-certified quality processes.STREETSBORO, OH