Direct Drive Transmissions
When a transmission operates as a direct drive, it sends engine input directly to the main shaft, eliminating parasitic gear mesh losses of power and fuel efficiency.
NACFE is not currently planning to further investigate direct drive transmissions, due to their simplicity. For more information, contact your transmission manufacturer on whether this technology is right for you.
Direct drive transmissions eliminate the energy loss as power is transmitted through the extra gear in an overdrive transmissions.
Compatibility with Duty Cycles
Direct drive transmissions work best for on-highway use on relatively flat ground. For fleets with other duty cycles or that run multiple duty cycles, direct drive transmissions may not be a good fit.