jeffw Posted May 18, 2016 Report Share Posted May 18, 2016 I'm in the midst of putting some storage onto our flat bed and I'd like to ensure the trailer doesn't hit the bins when turning very sharply. At some point in the forum I had seen a drawing or formula to calculate how much space you'd need, but now I can't find it. Any hints? Thanks! 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Jack Mayer Posted May 18, 2016 Report Share Posted May 18, 2016 I generally consider 56" as the minimum - but that is a generalization. You can calculate it on a particular trailer by measuring from the kingpin the the corner and measure the most outward part of the trailer at the corner. Some trailers curve out above the corner. In a dipping turn that is a concern. In general the 56-58" does fine, but I have seen trailers that needed more for an extreme dipping turn. But that is on CAD, and not likely to be encountered in the real world. Some use 60" just to be sure. Jack & Danielle Mayer #60376 Lifetime Member Living on the road since 2000PLEASE no PM's. Email me. jackdanmayer AT gmail 2016 DRV Houston 44' 5er (we still have it) 2022 New Horizons 43' 5er 2016 Itasca 27N 28' motorhome 2019 Volvo 860, D13 455/1850, 236" wb, I-Shift, battery-based APU No truck at the moment - we use one of our demo units 2016 smart Passion, piggyback on the truck -------------------------------------------------------------------------See our website for info on New Horizons 5th wheels, HDTs as tow vehicles, communications on the road, and use of solar powerwww.jackdanmayer.com Principal in RVH Lifestyles. RVH-Lifestyles.com Link to comment Share on other sites More sharing options...
Nigel Posted May 18, 2016 Report Share Posted May 18, 2016 I believe the usual number is about 55 inches (half the 102 trailer width and about 4 inches spare). Nigel 2006 Volvo VNL 430, 2006 smart cabrio cdi, 2000 Triple E Topaz 30' Link to comment Share on other sites More sharing options...
jeffw Posted May 18, 2016 Author Report Share Posted May 18, 2016 Thanks. Our trailer is flat on the front, but has a HVAC unit mounted in the middle: 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
jeffw Posted May 18, 2016 Author Report Share Posted May 18, 2016 This placement gives me 60" from the hitch center to the edge of the big box (on the driver's side): 2007 Volvo 780 Volvo D12D, 465hp, 1650 ft/lbs tq., ultrashift Link to comment Share on other sites More sharing options...
Jack Mayer Posted May 19, 2016 Report Share Posted May 19, 2016 60" is way more than enough. Jack & Danielle Mayer #60376 Lifetime Member Living on the road since 2000PLEASE no PM's. Email me. jackdanmayer AT gmail 2016 DRV Houston 44' 5er (we still have it) 2022 New Horizons 43' 5er 2016 Itasca 27N 28' motorhome 2019 Volvo 860, D13 455/1850, 236" wb, I-Shift, battery-based APU No truck at the moment - we use one of our demo units 2016 smart Passion, piggyback on the truck -------------------------------------------------------------------------See our website for info on New Horizons 5th wheels, HDTs as tow vehicles, communications on the road, and use of solar powerwww.jackdanmayer.com Principal in RVH Lifestyles. RVH-Lifestyles.com Link to comment Share on other sites More sharing options...
noteven Posted May 19, 2016 Report Share Posted May 19, 2016 Measure the radius from the pin to the corners of the trailer. Confirm this is the max radius - in other words the equipment on the front of the trailer does not extend farther from the pin than the corners to the pin measurement. Make a stick with a 2" something on the end that will sit in your 5th wheel jaws. Mark the stick with the radius of the trailer and then mark the arc on your deck with a bit of chalk. Place deck stuff at least 8 to 10 inches outside this arc. Plus add clearance as necessary for walking between the trailer and the boxes etc. "Are we there yet?" asked no motorcycle rider, ever. Link to comment Share on other sites More sharing options...
Randyretired Posted May 19, 2016 Report Share Posted May 19, 2016 If the load on the bed is tall more space may be needed as the top of the trailer moves more than the lower portion. If the boxes are short than a little less should be fine. Randy 2001 Volvo VNL 42 Cummins ISX Autoshift Link to comment Share on other sites More sharing options...
SIBERNUT Posted May 19, 2016 Report Share Posted May 19, 2016 Just don't ever jack more than 90 degrees. See the pic on my avatar. No, I did not do that! 2000 Volvo 635 A/S, N-14 Cummins"The Phoenix"'03 KA 38KSWB http://s918.photobucket.com/user/sibernut/library/?sort=6&page=1Furkids- Sibe's CH. Sedona & Tseika Link to comment Share on other sites More sharing options...
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