I'm watching this video and I am wanting to know if this type of transmission (two transmissions) requires double clutching on one or both of the shifters.
Thank you for your support.
Question for the old timers
Discussion in 'Trucks [ Eighteen Wheelers ]' started by Flat Earth Trucker, Nov 10, 2019.
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Sirscrapntruckalot and Oxbow Thank this.
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Clutch is for rookies and starting and stopping. A 2 stick, or set of clubs, we called them, is nothing more than 1 transmission behind another. You probably have a 6 speed main box and a 4 speed auxiliary box behind it. ( or visa versa) They both operate in the same manner, both crash boxes, no synchros. The ratios are so close, many end up skipping half of them. It gets old, trust me. I almost never used the clutch in any truck I drove. Crimeny, after 3 minutes in the video of driving , I was sick of it already, imagine doing that for 12 hours. With those crummy Detroits, you needed all those gears to "keep the needle against the pin". Anybody spent any time in a 2 cycle Detroit knows exactly what I men.
Last edited: Nov 10, 2019
Sirscrapntruckalot, Tall Mike, Hammer166 and 10 others Thank this. -
It was okay in an average way at first, until it hit the 60k mile mark when they did a top end set up that was an all day job with the Jakes, put a proper tune in it and jacked the the governor to 2500 RPM, then it was a beast, pulled real hard!
Only problem with that engine was, it was in a Freightliner!Sirscrapntruckalot, Hammer166, 12 ga and 5 others Thank this. -
Now, I have a question relating to the video that you posted for the other fellas that have been around a while.
I have two trucks that have Cats with retarders, and each of them have the second shorter lever attached to the right side of the steering column with which to activate the retarder. The truck in the video also has two levers, but is obviously Detroit powered. Is it likely that this particular 359 was repowered from a Cat to a Detroit, or is there another function for that second lever that I am not aware of?Tall Mike, Deacon jones, starmac and 7 others Thank this. -
Flat Earth Trucker and okiedokie Thank this.
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Feedman, Tall Mike, Flat Earth Trucker and 5 others Thank this.
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I read, the Cat retarder was like a torque converter in a car. It forced oil through vanes in the unit between the crank and the flywheel. It also required extra oil capacity. Detroits have cranks and flywheels, so I suppose. I'd have to think a "retarder" would be detrimental to the operation of a Detroit motor even when off. It needs all the help it can get. I fear we may start another Detroit discussion.
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Tall Mike, 201, Flat Earth Trucker and 3 others Thank this.
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My dad did something none of these videos do, and that was he put both boxes in neutral. We had a Pete with a 4x4, but the brownie wasn't full progressive. It had a tall over and a really short deep under, so we only used 3 gears in the brownie. So it would be first under to second under. Then direct then over. Shift the main to neutral then the brownie, pick up 3rd in the main, which was done with rythm, then match rpms to pick up the brownie. And so on.
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