Double Clutching

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Bryan Q.'s Comment
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Is there any tips on double clutching ? I’m have some trouble. I had class mate showed me that all he done was just tap the clutch with his toes. He never drove a rig before. But he said that he didn’t miss a gear but he said he didn’t get to try down shifting tho. So is it really that simple. Just tap the clutch with your toes to get it in gear ? I feel like I go too far down

Double Clutch:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

Double Clutching:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

G-Town's Comment
member avatar

Pressing it in more than an inch to an inch and a half while shifting will envoke the clutch brake, fouling the shift. You're classmate is correct.

The only time the clutch should be completely depressed is when stopped.

millionmiler24's Comment
member avatar

Pressing it in more than an inch to an inch and a half while shifting will envoke the clutch brake, fouling the shift. You're classmate is correct.

The only time the clutch should be completely depressed is when stopped.

Hey G-Town, is your truck at Swift a Manual or have they switched ya to an auto?

G-Town's Comment
member avatar

MillionMiler wrote:

Hey G-Town, is your truck at Swift a Manual or have they switched ya to an auto?

The only manuals that remain available at the D.C. are a couple of 10-speed former Central tractors. They are spares, every once in a while I get in one of them for something different.

I thought I'd never admit it; put I much prefer the auto-shifts. Once you adjust to some of the quirks, forcing a downshift, and "backing" they are a much better option for stop-and-go local driving.

Dm:

Dispatcher, Fleet Manager, Driver Manager

The primary person a driver communicates with at his/her company. A dispatcher can play many roles, depending on the company's structure. Dispatchers may assign freight, file requests for home time, relay messages between the driver and management, inform customer service of any delays, change appointment times, and report information to the load planners.
David K.'s Comment
member avatar

Once i get the truck rolling, i never touched the clutch again!! 13 overs, 15 overs.. didn’t matter, oh man i forgot, the super trucker recruiters said i didn’t know how to drive anymore... my bad.

millionmiler24's Comment
member avatar

MillionMiler wrote:

double-quotes-start.png

Hey G-Town, is your truck at Swift a Manual or have they switched ya to an auto?

double-quotes-end.png

The only manuals that remain available at the D.C. are a couple of 10-speed former Central tractors. They are spares, every once in a while I get in one of them for something different.

I thought I'd never admit it; put I much prefer the auto-shifts. Once you adjust to some of the quirks, forcing a downshift, and "backing" they are a much better option for stop-and-go local driving.

I am with ya there. I so prefer the autos also. It sure makes it easier to train people.

Dm:

Dispatcher, Fleet Manager, Driver Manager

The primary person a driver communicates with at his/her company. A dispatcher can play many roles, depending on the company's structure. Dispatchers may assign freight, file requests for home time, relay messages between the driver and management, inform customer service of any delays, change appointment times, and report information to the load planners.
Rob's Comment
member avatar

Once i get the truck rolling, i never touched the clutch again!! 13 overs, 15 overs.. didn’t matter, oh man i forgot, the super trucker recruiters said i didn’t know how to drive anymore... my bad.

Bryan is in school, you are required to double clutch to pass the state exam. Once I had my license I too have learned to float the gears , only using the clutch when starting/stopping.

Float The Gears:

An expression used to describe someone who is shifting gears without using the clutch at all. Drivers are taught to "Double Clutch" or press and release the clutch twice for each gear shift. If you're floating gears it means you're simply shifting without using the clutch at all.

Double Clutch:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

G-Town's Comment
member avatar

David K wrote this classic:

Once i get the truck rolling, i never touched the clutch again!! 13 overs, 15 overs.. didn’t matter, oh man i forgot, the super trucker recruiters said i didn’t know how to drive anymore... my bad.

Is that really what the recruiters said? Doubtful.

You sound way more like a Super Trucker than any recruiter I know. You've been out of the truck for years,...it's the insurance companies requiring reproof of your skills, not the recruiter.

Floating gears isn't something taught is the schools (and for good reason) or an acceptable shifting technique while taking the CDL road test.

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

Floating Gears:

An expression used to describe someone who is shifting gears without using the clutch at all. Drivers are taught to "Double Clutch" or press and release the clutch twice for each gear shift. If you're floating gears it means you're simply shifting without using the clutch at all.

Errol V.'s Comment
member avatar

Is there any tips on double clutching ? I’m have some trouble. I had class mate showed me that all he done was just tap the clutch with his toes. He never drove a rig before. But he said that he didn’t miss a gear but he said he didn’t get to try down shifting tho. So is it really that simple. Just tap the clutch with your toes to get it in gear ? I feel like I go too far down

From your description, this sounds like "car" clutching - just tapping the clutch and shift.

To double-clutch you have to press the clutch twice when shifting both up and down. That moment when the shifter is in neutral and the clutch is off helps control the speed of the gears. They are too massive to "coast" down when shifting so you get a little help from the engine.

Now that little tap just might do it. How much time do you need in neutral (between taps) when you upshift? Say (either out loud or in your head) "Bump - Bump". That's how much time.

Double Clutch:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

Double Clutching:

To engage and then disengage the clutch twice for every gear change.

When double clutching you will push in the clutch, take the gearshift out of gear, release the clutch, press the clutch in again, shift the gearshift into the next gear, then release the clutch.

This is done on standard transmissions which do not have synchronizers in them, like those found in almost all Class A trucks.

TWIC:

Transportation Worker Identification Credential

Truck drivers who regularly pick up from or deliver to the shipping ports will often be required to carry a TWIC card.

Your TWIC is a tamper-resistant biometric card which acts as both your identification in secure areas, as well as an indicator of you having passed the necessary security clearance. TWIC cards are valid for five years. The issuance of TWIC cards is overseen by the Transportation Security Administration and the Department of Homeland Security.

David K.'s Comment
member avatar

David K wrote this classic:

double-quotes-start.png

Once i get the truck rolling, i never touched the clutch again!! 13 overs, 15 overs.. didn’t matter, oh man i forgot, the super trucker recruiters said i didn’t know how to drive anymore... my bad.

double-quotes-end.png

Is that really what the recruiters said? Doubtful.

You sound way more like a Super Trucker than any recruiter I know. You've been out of the truck for years,...it's the insurance companies requiring reproof of your skills, not the recruiter.

Floating gears isn't something taught is the schools (and for good reason) or an acceptable shifting technique while taking the CDL road test.

Have you ever owned a truck? Been an O/O? Back in the 90’s i owned a 60,000 truck, performed most of my own maintenance, all those years never changed put a trans or clutch!!

CDL:

Commercial Driver's License (CDL)

A CDL is required to drive any of the following vehicles:

  • Any combination of vehicles with a gross combined weight rating (GCWR) of 26,001 or more pounds, providing the gross vehicle weight rating (GVWR) of the vehicle being towed is in excess of 10,000 pounds.
  • Any single vehicle with a GVWR of 26,001 or more pounds, or any such vehicle towing another not in excess of 10,000 pounds.
  • Any vehicle, regardless of size, designed to transport 16 or more persons, including the driver.
  • Any vehicle required by federal regulations to be placarded while transporting hazardous materials.

Floating Gears:

An expression used to describe someone who is shifting gears without using the clutch at all. Drivers are taught to "Double Clutch" or press and release the clutch twice for each gear shift. If you're floating gears it means you're simply shifting without using the clutch at all.

HOS:

Hours Of Service

HOS refers to the logbook hours of service regulations.
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Tips For Shifting
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