Thoughts on Doonan 50’6” drop deck and some spec questions.

Discussion in 'Flatbed Trucking Forum' started by Jacoooooooo, Jun 6, 2019.

  1. Jacoooooooo

    Jacoooooooo Heavy Load Member

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    Hi guys,
    so I’ve been going back and forth on a trailer purchase issue watching and setting my mind on one trailer after another. Wanted either a combo composition or full aluminum.

    Of course aluminum is a nicer thing and it doesn’t rust, but I’ve heard that steel frame is more durable. I do need it for steel (sometimes coils), etc, but also general freight.

    I came across Doonan combo drop deck spec’d pretty much the way I need excepf for 2 minor issues, but later about that.

    Trailer is 50’6”, because it has twist locks, and I need it this way, lower deck is 40’6”, so perfect size for 40’ box. Although I’m kinda wondering if it’s not going to be an issue with freight booked for 53’... if that 2.5 ft shortage is not going to be an issue?

    Also, trailer has load rating 80k evenly distributed and 50k over 10 ft. There is no posted rating for 4 ft. I’m wondering if it’s possible to guess/calculate 4 ft rating from those 2 numbers available? Not sure how much would it be. Let’s say 45k coil... I guess it would be too much for it.

    The last thing is the weight. Previously I spec’d a custom Transcraft, but it weighed over 12.5k lbs. This one apparently (according to the dealer) only weighs 10.5k, because it has aluminum cross members and the frame is hogh strengh lightweight steel (can it be that way?).
    I haven’t seen any official spec sheet, but will try to get it from the dealer. Is it possible that it weighs that much (little)?

    Is Doonan considered a good quality brand? Or it’s all the same crap, unless go all out for Mac or Retinouer?

    Trailer doesn’t have chain hooks, which I wanted, but it has a rail for J hooks, which dealer says kind replace chain hooks. I got used to chain hooks, but I could live with the other solution I guess. They could also add chain hooks if I insisted for an extra charge.

    Trailer doesn’t have ramps, thinking if it’s possible to add them later, or I should just find/spec one with them already? Never had ramps, so I don’t really know how much use do they get, and if it’s a must have in you guy’s opinion?

    Thanks in advance.
     
    Last edited: Jun 6, 2019
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  3. miszel

    miszel Light Load Member

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    The weight is about right. My trail king weighs 9060 lbs but its 48' steel frame and rest aluminum. I don't think 45 k coil will be a problem. I did pulled 51' step for 8 years and there was only few loads that wouldn't fit on it. You can add ramps they about 3k.
     
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  4. spyder7723

    spyder7723 Road Train Member

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    Doonan makes a fine trailer. That being said, this particular one i would not buy. It isn't built for concentrated heavy loads or it would have a x lbs in 4 ft rating. Now if you can give up pulling coils then it will be a great trailer.

    J tracks are much better than chain pull ups cause you can hook anger along the track instead of at fixed pull up locations.

    Ramps can be added later at any time.
     
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  5. Jacoooooooo

    Jacoooooooo Heavy Load Member

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    To be honest I searched thru truck paper ans there is no combo drop deck that they make, that would have 4ft load rating posted. Unless I’m looking at the wrong place. See below. They all have information plaques like this.

    I cannot give up coils. Where should I look for in a trailer spec to have one that can bear 45-50k coil?
     

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  6. spyder7723

    spyder7723 Road Train Member

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    Try getting ahold of the manufacturer. Or even a dealer that will spec a new one. It's possible they consider 10 ft the same as 4 ft. But its also possible they don't build one for single coils. What i know for sure is my great Dane flat has 3 ratings. Beam, 10 ft, and 4 ft.
     
  7. Ruthless

    Ruthless Road Train Member

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    Transcraft has it in the model number. Same as benson (all aluminum Transcraft)
    554c model is a combo trailer rated for 55k in 4’
    654 model is 65k in 4’
    724 is 72k 4’
    They make a all steel drop deck that’s 80k in 4’ as well.

    If the rating a manufacturer gives is in 10’ then they don’t have a strong enough build for concentrated weight.

    If you’re hauling predominantly concentrated weight coils of steel; get an aluminum flatbed.
    If you’re using coils to “get you out” after you take a step load in- you’re hauling too cheap on the load to the dead zone/slow freight area.

    There is no trailer that does it all. Each is a tool. Right tool for the job gets the job done right.
     
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