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Advice about shifting 6-speed synchronized transmission

Discussion in 'Experienced Truckers' Advice' started by ronjohn, Aug 22, 2014.

  1. Aug 22, 2014 #1
    ronjohn

    ronjohn Bobtail Member

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    Jul 28, 2014
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    Hi All,

    I am going to take my Class A test with a 6-speed synchronized truck. Is it true you cant really grind gears with this type of transmission?

    What are the best RPM Levels when down shifting. I would appreciate your knowledge ....Thank you


    I started on a ten speed but going to use a 6. Not sure if RPM is same.
     
    ronjohn, Aug 22, 2014
    ronjohn, Aug 22, 2014
    #1
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  3. Aug 22, 2014 #2
    8thnote

    8thnote Road Train Member

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    Chattanooga, TN
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    A synchro transmission is just like what's in a car. No double clutching required.

    -engage clutch
    -move shift lever out of current gear and into desired gear
    -release clutch
    -repeat X6
     
    8thnote, Aug 22, 2014
    8thnote, Aug 22, 2014
    #2
    ronjohn Thanks this.
  4. Aug 22, 2014 #3
    moloko

    moloko Road Train Member

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    seattle, wa
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    It's like shifting a car. Just push the clutch in and shift with the clutch depressed. Up shift when the engine tells you but on the 6 speed I think it's like 2100 rpm. Just listen to the engine sound though. Since it's synchronized I'm sure you could even skip gears with no grinding
     
    moloko, Aug 22, 2014
    moloko, Aug 22, 2014
    #3
    ronjohn Thanks this.
  5. Aug 24, 2014 #4
    Ridgeline

    Ridgeline Road Train Member

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    Michigan
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    Wait a minute. YOU sure it is a syncro tranny? What kind of truck is it? FL series?

    I've got a truck with a 6 speed and it isn't a syncro.

    Yes you can grind gears in a syncro tranny.
     
    Ridgeline, Aug 24, 2014
    Ridgeline, Aug 24, 2014
    #4
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