Axle ratio for downspeeding

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Dana has introduced a new 2.47:1 axle ratio for its Spicer AdvanTEK 40 tandem axle to support downspeeding in linehaul trucks. That means it now has seven ratios from 2.26:1 to 2.93:1 for the fuel-saving configurations.

The company says the new ratio is ideally suited for High Efficiency and Performance direct-drive versions of the SmartAdvantage Powertrain developed by Eaton and Cummins. It’s recommended for regional-haul applications that travel a mixture of highways, secondary roads, and urban streets.

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John G. Smith is the editorial director of Newcom Media's trucking and supply chain publications -- including Today's Trucking,, TruckTech, Transport Routier, and Road Today. The award-winning journalist has covered the trucking industry since 1995.

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