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12-08-2024, 10:28 AM
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#57
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Senior Member
Join Date: Apr 2024
Posts: 328
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Quote:
Originally Posted by CecilD
Your "only reason" theory seems to overlook the fact that DRW trucks' tires have 4 extra sidewalls supporting them in the rear. Brace the axle all you want, it won't eliminate tire sidewall flex. 100% more sidewalls and an extra 4,000# of tire capacity work to reduce rear tire squirm and add to stability. You can't discount that.
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my "only reason" assumes you have tires rated for the weight you are carrying.
also you won't get an extra 4000 lbs of tire capacity as when used in a dual setup the actual carrying capacity of a tire is less than when used single, but that has nothing to do with the issue I was talking about, and there are a whole bunch of reasons for the lower weight capacity. and example of this is my tires are rated just shy of 4000lbs each (I think 3996lbs) and when used in a dual setup they are rated at 3460 each. so yea they still carry more weight when added up but, that doesnt change the spring weight or rebound rates of the shocks, or the effect of a swaybar
The body piviots and rocks independent of the rear axel. It does this through springs, shocks, airbags, track bars, and so on depending how your truck is built. so no matter what you have for tires the frame/body will move the same, or very simular, with the same weight, until we start talking about shocks, springs and such. these are what makes the vehicle seem more stable. Now yes if you have underinflated tires, it will also feel squirly, over loaded tires, not so much untill you blow it from the excessive heat. if they could make a tire that didn't die from heat build up then we would only need one load rating
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12-08-2024, 10:33 AM
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#58
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Senior Member
Join Date: Apr 2024
Posts: 328
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Quote:
Originally Posted by Lantley
The simple physics of the wider stance plays a part as well.
Stand with your legs close together with your shoes touching each other vs. 2'apart.
All other components being equal standing with a wider stance produces lots of stability.
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there is no real wider stance, you guys are missing the point. think of it like a teeter totter the top of the triangle being the attachments of the frame to the rear axel, so the springs.. then you have shocks and some times trackbars.. the frame rails are the same distance apart on a SRW as a DRW so your spring mounts and shock mounts and sway bar if you have it are all mounted at the same distance from the center. yes it has a wider stance on the base but that doesn't influence body role at all, its the rates of the springs and the dampening ability of the shocks that influence that. now if the rear end was hard mounted to the body with now springs and shocks then yes that wider stance would make a difference, but only in preventing the truck from rolling over on a side angle.
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12-08-2024, 10:39 AM
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#59
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Senior Member
Join Date: Apr 2024
Posts: 328
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Quote:
Originally Posted by MFL
Stircrazy mentioned the huge difference a stabilizer bar makes on a SRW. This is very true, using his TC, but a FW, not so much.
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I didn't need the sway bar with the 5th wheel at all. the lighter truck camper is what made me buy it (yes my old camper is lighter than the pin weight of the 5th wheel by 300lbs when all loaded up for camping)
I think the only reason I needed it for the truck camper, well two reasons, higher center of gravity making it lean a bit more around corners, and rock when doing light 4x4ing to get into a place. And two, it acts like a big sail going down the highway with side winds. I am sure the 5th wheel does also but its suspension minimizes that and the side pivot of the 5th wheel hitch eliminates it. it helps with that also ha-ha. the 5th wheel, 14000lbs with just shy of 3300lbs pin weight doesn't have any of these issues and I wouldn't have spent the 600 bucks for the sway bar kit if I didn't have to.
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12-08-2024, 11:52 AM
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#60
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Senior Member
Join Date: Aug 2009
Posts: 358
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I had a SRW pulling my Cedar Creek fifth wheel and now I have a dually pulling the same camper. I can’t tell the difference except when I’m turning not pulling anything. The dually is harder to make turns with and harder to park. I normally have some truck sticking out plus I fold my mirrors in. If I was younger I would trade the dually for a SRW. Everybody is different. I wish when I ordered the 2012 Silverado 3500 long bed I would have got the 4 door instead of the extended cab I got, but two little granddaughter’s took care of that truck. I really liked that truck I had took the emissions off the engine. Anyway I’m stuck with a dually plus the dually is easier to get stuck
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12-08-2024, 12:18 PM
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#61
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Senior Member
Join Date: Nov 2015
Posts: 28,354
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Quote:
Originally Posted by 4x4ord
Many of us would likely say safety fuel economy and comfort are all important so we buy SRW pickups for fivers under 16k lbs and get duals for heavier fivers.
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60 posts and this one sums it all up ^^^^^^^^^^
__________________
I took my Medication today. HAVE YOU?
Dodge 3500 w/Tractor Motor
US NAVY---USS Decatur DDG-31
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12-08-2024, 05:30 PM
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#62
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Senior Member
Join Date: Aug 2013
Posts: 1,579
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Quote:
Originally Posted by 4x4ord
Many of us would likely say safety fuel economy and comfort are all important so we buy SRW pickups for fivers under 16k lbs and get duals for heavier fivers.
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Quote:
Originally Posted by Old-Biscuit
60 posts and this one sums it all up ^^^^^^^^^^

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Not really, it depends on the total weight carried by the TV. While my cat 5th wheel has a pin of only 2,900#, I carry 1,400#+ of stuff which would have pressed the axle and GVWR of a SRW. Yes, my 5th wheel is about 1,000# over weight at 13,300# GVW. So blanket statements like DRW not needed until the 5th wheel reaches 16k doesn’t take into account what else is carried in the TV.
__________________
Russ & Paula, Portland, OR. The Beagle Gus.
2016 Ram Laramie 3500 DRW Aisin 4X4 14,000# GVWR.
2005 Keystone Copper Canyon 293FWSLS Rear Kitchen 12,360 GVWR
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12-09-2024, 10:44 AM
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#63
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Senior Member
Join Date: Apr 2003
Location: Kelowna, B.C. Canada
Posts: 3,769
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without getting into the back and forth; I'll simply say that I have two DRW's and four SRW diesels and we tow at least one of my 9 trailers daily. The DRW's are notably more stable.....probably has as much to do with the extra sidewalls as anything. Slide in truck campers are the hardest load for sway and the difference there is substantial. Yes, tires, springs, airbags, swaybars, etc. etc. all impact stability but ultimately, you can't easily make a SRW as stable as a dually......whether or not you need that much stability is a separate issue.
Worst is the fact that most of the SRW trucks seem to be modded with larger tires, leveling kits, etc. then airbags added to counteract the leveling kit and you end up with a poor handling truck that is worse than stock for towing/hauling.
2 cents,
Dave
__________________
2022 Outdoors RV 25RDS, 2022 F350 dually, 6.7PSD, 10 spd, 3.55's
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12-24-2024, 02:43 PM
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#64
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Senior Member
Join Date: Aug 2009
Posts: 358
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I have always had SRW trucks. At my age I’m never trading trucks or campers. I’ll stick with what I have. Truck is paid off and camper will be paid off next month. With a SRW I was probably over a few pounds on what my truck could haul but no problems with the dually. I have a 109gal auxiliary tank in my truck that’s more for convenience than anything else. I normally drive 63 when pulling the camper. I’m planning a trip to Alaska next year
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