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TruckersReport.com Trucking Forum | #1 CDL Truck Driver Message Board
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<p>[QUOTE="Accidental Trucker, post: 10846973, member: 165677"]The combination of low torque and low RPM's is going to effect driveability in any kind of terrain with weight. With 3.25's, we're at 1400 at 70 mph. With a lower ratio, you would go into Oregon at 65, just under 1200, and the tranny will start shifting every 30 seconds trying to maintain speed on any kind of significant up hill. With a manual, the driver will end up dropping a gear and running in 12th. Neither are desirable. You can get away with the downspeeding on flat terrain just fine, but throw some up and downs at it, and driveability takes a hit.[/QUOTE]</p><p><br /></p>
[QUOTE="Accidental Trucker, post: 10846973, member: 165677"]The combination of low torque and low RPM's is going to effect driveability in any kind of terrain with weight. With 3.25's, we're at 1400 at 70 mph. With a lower ratio, you would go into Oregon at 65, just under 1200, and the tranny will start shifting every 30 seconds trying to maintain speed on any kind of significant up hill. With a manual, the driver will end up dropping a gear and running in 12th. Neither are desirable. You can get away with the downspeeding on flat terrain just fine, but throw some up and downs at it, and driveability takes a hit.[/QUOTE]
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TruckersReport.com Trucking Forum | #1 CDL Truck Driver Message Board
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