GotQuestions? Wheel End

Q. I need to know the cost factor between starting and stopping 19 times as apposed to starting and stopping 4 times in the same amount of miles.

I am doing a cost analysis on braking a semi - We haul 98,000lb on six axle tractor trailer rigs.

March 31, 2014

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A. There is not enough information to calculate a precise dollar amount, however, you can make a reasonable estimate that your cost of operation performing (19) start/stop cycles VS. (4) would be (19 divided by 4) or 4+ times. A significant amount of energy is required to accelerate a vehicle to cruising speed, which is then wasted in the stop event, unless regenerative braking is available.

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Jeff Geist

Wheel End Expert

STEMCO
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