You are watching: 3.36 gear ratio in semi truck
You are thinking right, nothing more miserable than something too high to come out in soft ground. I"m sure these fellers with the fast ratios have a trans to match that gear setup, so you"re right to use caution.Larry
I had to be pulled from a sugar beet field a week ago grossing north of 90,000# trying to get my spread axle turned to hit a ramp over an irrigation ditch. I have a 475hp C15, 13 speed L ratio of 12.31 and 3.36 rear end ratio. There was no lack of power to keep the drivers rotating. Traction was the problem with the trailer cutting in 4 to 6".I see no need for 4.11 or high 3.xx ratios unless you are pulling trains or have a small power unit and/or poor LL ratio transmission.
|It"s not always about getting going that"s the issue....low gear speed also comes into play.|
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There have been times digging beets that we have been below 2mph in the mud. Sure is tough on truck clutches if you have to ride the clutch to creep that slow.
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