New to pulling 26' doubles..Question?

Discussion in 'Questions From New Drivers' started by trucker3573, Jan 14, 2011.

  1. trucker3573

    trucker3573 Light Load Member

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    Yes makes sense to me. I did it one time and had to get on the brakes in a small town a little bit and the trailers did exactly what the con way guy said, luckily I was going very slow so no big deal, but i will never run like that again and will pass the advice on to my co-worker. Thank you all for the input.
     
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  3. GasHauler

    GasHauler Master FMCSA Interpreter

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    Try triples out of Las Vegas heading north with the wind blowing 60mph. I quit and took a safer job hauling gasoline!.
     
  4. already gone

    already gone Road Train Member

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    isn't this trick only supposed to be used when running a doll behind a trailer, so the dolly doesn't hop around so much?

    I have heard of this before, but not hauling a trailer, as a trailer has weight. but i have heard that a dolly, or bogie, or whatever you want to call it, will hop around a LOT if you have no weight on it, and you have the service brakes on.
     
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  5. GasHauler

    GasHauler Master FMCSA Interpreter

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    Well you're right. I would put a special connector onto the service line and route the other lines in a way that the dolly would not lock up. But if I were to get stopped I'd get a ticket. The law says every axle must have working brakes.
     
  6. Jfaulk99

    Jfaulk99 Road Train Member

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    That's actually a pretty funny way to screw with someone if you do it to the supply side. Takes them forever to figure out why the trailer won't move. About like hooking someones horn to their brake lights in high school.:biggrin_2559:
     
  7. Allow Me.

    Allow Me. Trucker Forum STAFF Staff Member

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    You're referring to pulling a con gear (dolly) behind the first trailer and locking in the pintle hook, so the dolly will be secure AND have brakes. Some guys pull the dolly and want the pintle hook engaged, but not the brakes working.
     
  8. jakebrake12

    jakebrake12 Road Train Member

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    Hahaha.. No doubt.. Pulling off the dummy glad hand on the back box is much easier to figure out but still kind of funny..
     
  9. jakebrake12

    jakebrake12 Road Train Member

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    Interesting thought but I don't see how that would work since the dolly is an "open air system" - made that term up but by that I mean there is no way to supply air throughout the dolly without it being hooked to a back box. If you hook the red line to the dolly, which engages the slack adjuster, you'll blow all of that air right out of the red line that would go to your kite - same thing with the blue line - if you have it connected to the dolly with no back box the air will just blow out every time you hit the brakes.

    The only way you could run one and a dolly with the slack adjuster engaged and brakes on the dolly would be to have dummy glad hands on the lines that would connect to the kite. Never heard of this before. I've run with dollys on the back plenty of times and all we ever did was plug in the pigtail for lights, hook the safety chains, and secure the air lines so they wouldn't fall and drag. Almost seems like that would be a huge safety concern to have a dolly on the back with live brakes - an empty kite locks way too easy as it is and I can only imagine how bad a dolly would be..
     
  10. Allow Me.

    Allow Me. Trucker Forum STAFF Staff Member

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    Maybe I didn't explain it right. I did do doubles for quite a few years, off and on. But I never pulled a con gear only, behind the first trailer. At one company I worked at, a line driver would come every morning with our LTL freight. Sometimes he would return to his base with one trailer and a con gear. He would use a dummy glad hand on, I believe, the rear of the front trailer, can't remember emergency or service side, and open the other valve to lock in the pintle hook, if I remember correctly. This was in '87, so bear with me. Possibly he ran with no brakes on the con gear, but had it much more secure than running without the pintle hook engaged. Pretty sure UPS does this as well. Point being, a con gear without the pintle hook engaged does some funky flopping around back there.
     
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  11. jakebrake12

    jakebrake12 Road Train Member

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    Pretty sure it was a terminology thing..haha.. I see what you're saying now. I've always known them as slack adjusters - it closes when the dolly/con gear is aired up tightening the the pintle hook connection between lead and dolly. He probably took the dummy glad hand off the trailer and placed it on the red line heading out.

    We can't do that because our dummy glad hands are attached to the trailer. I've cut them off a few times to air up a locked dolly but that's about it. You definitely know you have a dolly on the back flopping around if you're light - if you're heavy you'll never notice it.

    I remember running into another Con-way driver from SoCal while I was on a vacation and it was like we were speaking two different languages because of the different terminology. We call them dollys hear but they call them con gear out there - we call our back boxes kites and even though he'd worked here for like 21 years he'd never heard that term.

    Darn terminology..haha..
     
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