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Thread: U-turn distance needed
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03-14-2023, 12:12 PM #1
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U-turn distance needed
Hello, my truck included, I'm about 55' long.
Is there a 'standard estimate' for how much distance I need between for the 180 degree turn?
...Either calculated between the insides of each direction, or the road centerline of each direction?
I know one answer is "it depends". But, I'm looking for a rule of thumb if it exists.
I'm in the early stages of planning a new driveway on my vacant land. I don't want to actually try it yet because the road is currently too rough.
I also know I could go out to a stadium parking lot and set up some cones, but that would be a big endeavor at this time.
Thanks!2020 GD Imagine 2970-RL
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03-14-2023, 12:52 PM #2
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Unfortunately, the answer IS - it depends. The turning radius probably varies by truck & trailer. My 2018 short bed truck turned in a tighter radius than my long bed '22. Then there is the situation of can you actually make a 90 degree turn without the camper interfering with the truck cab or bed.
It might help if you tell us your truck and camper specifics rather than just the total length.
Finally (maybe not in the "it depends") category, if I had the room on vacant land I'd make the turn wider than the minimum required for your current lash up. Ya never know - a large moving van truck may have to get it and out too.Larry KE4DMG
2022 F-350 KRU SRW LB - Airlift 5000+, ForScan, 37 RDS Aux Tank,
2019 310GK-R - Sailuns; MorRyde IS; Disc Brakes; 20K Reese Goosebox
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03-14-2023, 01:46 PM #3
Lots of variables, 5th wheel or TT, truck (not all trucks have same turning radius). You can probably figure out your truck turning radius fairly easy, and that will give you a good starting point.
2023 Momentum 398M-R
2023 Ford F-450
SOLD - 2021 Reflection 311BHS
SOLD - 2017 Momentum 399TH
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03-14-2023, 02:16 PM #4
Where are you located? Might not be subjective at all because of State and Local Code requiring you to get a civil engineer involved... There's an entire handbook used by civil engineers for geometric layout and both civil design suites for CAD can work out the geometry directly. Pertinent questions would include are you simply wanting to accommodate what you have now or want to include some future proofing? You paving or just gravel? It does make a difference. It's also not your overall length that's critical but it your centerline distance between tow vehicle axles and coupling to centerline of the trailer axles.
Rob & Nikki + Cloverfield
2020 Grand Design Solitude S-Class 3350RL
2015 RAM 3500 Longhorn Laramie Crew Cab, Long Bed, 4x4 Dually Cummins/AISIN
Mountains of Pennsylvania
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03-17-2023, 08:04 PM #5
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Two lanes is possible, three lanes is better.
2023 Reflection 315RLTS
2017 Ford F-350 Crew Cab Short Bed SRW, 6.7L Diesel
Hensley Swift Arrow
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03-18-2023, 04:02 AM #6
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google: vehicle turning template...or vehicle swept path.....
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03-18-2023, 05:19 AM #7
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I would say, without getting into a lot of science, you almost got to go to an empty parking lot and see what makes you comfortable in handling your rig.
Sometimes its not whether it can be done, but can it be done with comfort. Having a little extra room can always help with the unexpected ah-crap moments.Jim and Annette
2019 Reflection 150 295RL
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03-18-2023, 08:55 AM #8
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You have a TT, so whatever you truck will turn the trailer will follow PLUS trailer tail swing. You don't list you truck, but most manufacturers list the turning radius in thier technical information.
With a 5th wheel it is possible to turn tighter by jackknifing the truck (watch for cab contact). However this puts an extreme loading on the axles and suspension. Again tail swing needs to be added.2018 Reflection 150 Series 220RK 5th wheel with 6K axle upgrade. B&W 25K OEM Companion, Steadyfast system, 2022 F350 SRW 6.7 King Ranch 8' bed, Trailer reverse lights, rear spare tire holder, storage tube, sumo springs, Victron MultiPlus 12/120/3000, and Solar
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03-19-2023, 08:12 AM #9
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04-10-2023, 01:38 PM #10
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So how to you calculate "tail swing"
Thanks
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