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Old 01-29-2013, 09:18 PM   #1
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Are truck and possible new 5 th wheel compatible.

Hi we are looking at trading in our Holiday Rambler TT for a 5 th wheel. I have read a lot about height concerns and all the modification people have had to make to their truck and / or trailer. Not sure if I want to do all that. Can anyone tell me what they think- I have 2012 f3504x4 super crew cab w short bed. Looking at 2013 eagle 31.5 fbhs. Will my truck be too tall? Does anyone have a similar set up? What do you think?
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Old 01-29-2013, 09:22 PM   #2
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Sounds fine to me. You can also flip the axles which can raise fourr to six inches
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Old 01-30-2013, 03:53 AM   #3
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All new heavy model 5th wheels will fit under F350's DRW but SRW's are about 2in taller but will drop down after being hitched.
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Old 01-30-2013, 09:08 AM   #4
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I have 2012 f3504x4 super crew cab w short bed. Looking at 2013 eagle 31.5 fbhs. Will my truck be too tall?
Sounds like a good match, on paper. Your F-350 SRW should have no problem towing that 5er over the mountains. The trailer has a wet and loaded weight of 11,600 pounds, which is less than the ball-park max 5er weight of about 12,000 pounds for your F-350 SRW, so hitch weight of around 2100 to 2400 pounds should not be a problem.

The best way to see if the truck is too tall is to back it under the kingpin of the trailer. You don't even need to have the 5er hitch installed. First, level the trailer front to rear, then measure from the kingpin to the ground. Then raise the front of the trailer on it's jacks until the kingpin is raised about 3". (That 3" is an estimate of how far down the truck suspension will go when 2,100 pounds of hitch weight is added.) Then back the empty truck under the trailer. Eyeball how much clearance you have between the top back corner of the bed and the underside of the trailer that goes over the bed. If you have at least 5 inches of clearance, then you're probably good to go on pavement. You'll need 7 to 8 inches clearance if you plan to go off road.

For an even more accurate estimate, load the bed with 2,200 pounds of something - bags of play sand, Quik-Crete, gravel, anything - even plain ole dirt if you weigh the rig so you know how much weight you added. Then back the truck under a level trailer, and eyeball the clearance between the back corner of the bed and the underside of the 5er overhang.

If you don't have as much clearance as you'd like, most RV trailers can be raised about 4" with relative ease (requires welding). The Jayco Eagle 31.5 FBHS has a Mor/ryde CRE 3000 suspension. The CRE 3000 simply replaces the steel equalizers between the tandam axles with a fancier equalizer that includes rubber cushioning. Look at the suspension critically, and if it has ordinary leaf springs with spring mounts welded to a tube axle, then you can easily raise the trailer on it's suspension by a trick called "flipping the axles". You don't literally turn over the axle, but instead you move the spring mounts from under the axle to over the axle. (Some pros leave the old spring mounts under the axle and install new ones over the axle.) That raises the trailer the diameter of the axle tube, plus a bit more for the height of the spring mounts. I had that done once, and the RV shop charged me about $200.

Note: If you raise the trailer 4" or so, you'll probably also want to replace the stairs going up into the trailer. I replaced my 2-step entry with a 3-step model.

Also notice that when all hooked up and ready to tow a wet and loaded trailer, the floor of the trailer should be level front to rear.

Your tow vehicle is a shorty, so an ordinary 5er hitch won't do. You need a slider hitch, and preferably an automatic slider such as the SuperGlide. Here's the one I would get for your trailer:
PullRite has a SAFER, STRONGER, BETTER designed hitch for you
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Old 01-30-2013, 01:07 PM   #5
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athough it is not recommendedd to haul a fifth whee with a 4x4One is becuse the turning radis is not as short as a 4x2,amount of weight you can haul etc.The trailer box is adjustable as well as the hitch in the truck.I have a 35ft Montanna hooked to a 97 Ford 4x2 super duty 7.2 diesel with 265 16 tires.I have towed it for over 35,000 miles with out a problem.The hitch pin came in at 2100lbs loaded.The truck when hooked up went down 1.5 inches allround.I averaged 12-13 mpg with the trailer.Towed over 10,000 ft with no problem.Of course I didn't do 70mph but if your smart about useing your equipment corectly you won't have a problem.My truck doesn't have a lot of the newer upgrdes but works just fine.I have a friend who delivers fifth wheels of all sizes all over the US with a 2003 Dodge dually diesel and has over 800,000 miles on his truck and the only problem he has had is a bad injector and that was at 837,000.He wanted me to trade him mine because it ony has 210,000 on it.I also have a2003 Dodge dually 4x2 that I use to haul a New Horrizon 37ft trailer.The trailer weighs in around 17000 which would be to much for th Ford.Again it's how you treat your equipment.I hope this might give you som insight.We don't all agree on things but what works for may not for someone else.Good luck reserch,reserch
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Old 01-30-2013, 01:35 PM   #6
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Look at the Hijacker auto hitch...it can be adjusted up to 14 additional inches in height...super glides are nice as well...had one on my 2011 2500 Chevy4WD...towed a Montana 3100 all over creation...
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Old 01-30-2013, 01:56 PM   #7
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athough it is not recommendedd to haul a fifth whee with a 4x4One is becuse the turning radis is not as short as a 4x2,amount of weight you can haul etc.The trailer box is adjustable as well as the hitch in the truck.I have a 35ft Montanna hooked to a 97 Ford 4x2 super duty 7.2 diesel with 265 16 tires.I have towed it for over 35,000 miles with out a problem.The hitch pin came in at 2100lbs loaded.The truck when hooked up went down 1.5 inches allround.I averaged 12-13 mpg with the trailer.Towed over 10,000 ft with no problem.Of course I didn't do 70mph but if your smart about useing your equipment corectly you won't have a problem.My truck doesn't have a lot of the newer upgrdes but works just fine.I have a friend who delivers fifth wheels of all sizes all over the US with a 2003 Dodge dually diesel and has over 800,000 miles on his truck and the only problem he has had is a bad injector and that was at 837,000.He wanted me to trade him mine because it ony has 210,000 on it.I also have a2003 Dodge dually 4x2 that I use to haul a New Horrizon 37ft trailer.The trailer weighs in around 17000 which would be to much for th Ford.Again it's how you treat your equipment.I hope this might give you som insight.We don't all agree on things but what works for may not for someone else.Good luck reserch,reserch

Whoa, 4x4 not recommended by whom ?!? turning radius ?!?

with all due respect you have not been close to the new fords then....
our crewcabs turning radius is better than MANY cars I've driven
and I use 4x4 many times to back into tight places...

lastly,
our stock 5er clears our bed rails by at least 5 inches without any mods....
but, that's of course IMHO and MY real world results
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Old 01-30-2013, 08:29 PM   #8
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athough it is not recommendedd to haul a fifth whee with a 4x4One is becuse the turning radis is not as short as a 4x2,amount of weight you can haul etc.
Whoa now, where did you hear this?...The Internet? If it is on the internet, it must be true.......NOT


Ken
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Old 01-30-2013, 08:34 PM   #9
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Whoa now, where did you hear this?...The Internet? If it is on the internet, it must be true.......NOT


Ken
sure it is
right
maybe
well


we towed with both a 4x4 and a 4x2 dually crew cab long beds
other than being as long as the queen mary
they did great
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Old 01-30-2013, 08:56 PM   #10
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Look at the Hijacker auto hitch...it can be adjusted up to 14 additional inches in height...
Hitch adjustments and pinbox adjustments are not used to change the clearance between the 5er and the truck bed. The floor of the trailer should be level, front to rear, when hooked up to the tow vehicle. If it's not level, the only way to make it level is to raise or lower either the truck or the trailer.

DO NOT tow with a nose-high trailer. If you simply raise the hitch in the bed, you will raise the front of the trailer and it will no longer be level. A nose high trailer is not safe. Be safe.

The hitch and pinbox adjustments are used to match the kingpin of the wet and loaded trailer to the hitch height. If the nose of the connected trailer is low or high, then disconnect the trailer and adjust either the hitch or the pinbox an inch or so, then connect it up again. Continue adjusting the hitch and/or pinbox until the trailer is level.

When you have it all hooked up and the trailer is level front to rear, if you don't have enough clearance between the top of the bed and the bottom of the trailer overhang, then next step is to either raise the trailer or lower the truck. The most common remedy is to "flip the axles" on the trailer to raise it on its suspension about 4" or so. A more drastic remedy involves buying a different truck to use as your tow vehicle.
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Old 01-31-2013, 06:30 AM   #11
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The worst thing you can do is flip axles. The axles are set with a bend in the tube for alignment.

I towed the past 20 years with low front and get great fuel evonomy. Its better to try to be level to prevent under trailer wind drag and nothing to do with safety other them possible height limitations.
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Old 01-31-2013, 06:41 AM   #12
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"Flipping the axles" is a misnomer for relocating the axles from above to below the leaf springs using new spring perches on top of instead of below the axles. Axle curvature and camber are NOT changed if done this way.

Many 5th wheels have suspension adjustments for height built into the spring mounts. Jayco, for one, uses "Jake plates" that have a series of holes that the spring ends, shackles and equalizers can mount in that will vary the trailer's height.

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Old 02-07-2013, 08:53 PM   #13
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Hi everyone thanks for the insight before we order the Jayco I plan on taking to the person installing the hitch. With all the information and tips to measure it I will know if they are telling me the truth or just trying to sell me a 5th wheel.
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