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waterboy222 12-08-2011 12:50 PM


Originally Posted by offshorexcursion (Post 3566765)
Perfect Video to prove my point that a DUALLY is NOT more stable then a single wheel.

Duallys are more for peoples EGOS then anything! LOL!

Ya, really, all those c0cky longhaul truck drivers running tandem duals, how egotistical! :rolleyes:

A dually provides stability, plain and simple. They normally run stiffer tires, which helps with lateral stability in windy conditions. They provide faster recovery times to slip situations also. I wont go into detail over the blowout situation, as its obvious and has been covered in this thread already.

If you're going to mention ego, you may just be in the wrong forum! lol!:grinser010:

When I was hauling boats for a living, I hauled a 28' bowrider to New Mexico. I was using a SRW 3/4 ton. When the drivers side rear tire on the trailer blew out, it manged to grab the (very cheap) fender and yank it off the trailer tangling it between the two tires and the road. There was no rubber touching the pavement on that side at all, just skating on what was leftover of the fender. The trailer brake lines were yanked off because they were screwed to the inside of the fender for some reason, therefore leaving the trailer with no brakes. The trailer started its bucking side to side and slid off the pavement into the dirt, pulling the backend of my truck with it. It jackknifed and slid to a stop in the dust. No injuries, no truck damage, but thank baby Jebus there wasn't a cliff on that side. I think with a dually, that situation would have been a lot less dramatic. More rubber on the ground equals more force required to pull it off track.

HabanaJoe 12-08-2011 01:45 PM


Originally Posted by waterboy222 (Post 3567063)
A dually provides stability, plain and simple. They normally run stiffer tires, which helps with lateral stability in windy I think with a dually, that situation would have been a lot less dramatic. More rubber on the ground equals more force required to pull it off track.

I don't want to fight with anyone here but if the same amount of weight is on the SRW or DRW the amount of rubber on the road will be more with a dually BUT the pressure on the tire contact area of the dually will be half that of the SRW. The more pressure per square inch on the contact area will make it harder to break loose. The dually will most likely slide around much easier than a SRW.

The dually is strictly for carrying weight and in fact like a semi-truck when loaded lightly provides far less traction than a SRW becuase on the PSI on the contact area.

Case in point take a bobtail tractor and hit the brakes hard the tires lockup and skid. Add some weight, an empty trailer and they will still skid somewhat (the tractor rear wheels). Load that trailer heavy and you'll smoke the brakes before the tires.

It's all about ground pressure because the tire compounds are very hard, it's not like a race car with hot sticky tires, road tires are hard and designed to last a very long time.

45Tripps 12-08-2011 03:51 PM

Until the myth busters do an episode on this, I will stick with the dualley.

I have towed with both, and with 50 plus feet of boat and trailer behind me ( 350 SRW & DRW ), the dualley definately fells like it has a better bite, not to mention cuts out any swaying, and lastly stops much better than a SRW ( bigger brakes on a Dualley over a SRW ). Its alot different towing with rigs 35 foot and under due to weight and length.

The larger trucks I mentioned previously, no comparison to the 350 series.

Trailer on guys......

Wildman_grafix 12-08-2011 03:55 PM


Until the myth busters do an episode on this
Now that is one I would like to see!

HabanaJoe 12-08-2011 06:58 PM

If you buy this book http://www.amazon.com/Physics-Tire-T.../dp/0306308061 it will explain everything you need to know. It will take me 3 hours to copy all the math to prove my point but my point was about traction or grip and not feel.

45tripps - the wider track is always better as with a dually when compared to the trailer width. When it comes to load (weight) or length the only factor is how much weigth is on the tow vehicle. A SRW F-250 can pull a 65,000lbs trailer with no problem at all and with proper braking on the trailer for the trailer's weight it can stop perfectly fine.

You might ask, how can I make a statement which seems so crazy? If I were to use a converter dolley and set my trailer tandems at the right distance so I can maintain say 2,000 lbs on the tongue of the F-250 and my braking on both dolley and trailer exceed my truck I will stop fine.

I know that is not practical or legal but the point is it's the weight carried by the tow vehicle that makes a dually better or worse than a SRW not what is pulled behind it. If your load on the truck itself (not trailer) is high a dually would be better but a light load on a dually is more apt to skid and/or jacknife than the same load on a SRW.

The math is in the book, personally I've had both and think with the right loading both are equally as good.

ps I'm going to write to Myth Busters and ask them to show it, I would love to see it done:drink:

Expensive Date 12-08-2011 07:20 PM

All I know is I have towed with SRW and DRW and I will never tow with SRW again.

bustedbrick 12-08-2011 07:21 PM

Semis are migrating to Super Singles. Better fuel economy. What's really important here is tire design and technology, it has closed the gap single vs. dual, both in light duty and heavy duty trucks. Is there still a gap, maybe/sure/yes, but there is some truth here that when dually trucks first came out, tire technology and construction required it, more so than today.

offshorexcursion 12-08-2011 08:00 PM


Originally Posted by MILD THUNDER (Post 3567046)
Few reasons why duallys tow better.

Wider track.
Blow a rear tire and you aren't gonna lose it like a SRW.
Normally, heavier duty axles, ring gears, and springs.
Tires distribute the weight better and run cooler in the hot summer.
More stable over random potholes. Most potholes swallow up a single tire. It would have to be pretty large to swallow up a tandem wheel. Once again, a blowout protection.

My SRW superduty truck swayed when towing the boats. My Dually doesnt get affected by passing semi's and uneven road surfaces as much.

Not gonna get in a pissin match about tow vehicles. But let me ask you guys, what do you think 1 ton duallys were intended to tow? And what do you think 3/4 ton SRW wheels intended to tow? Big offshore boats have no business behind anything less than a 1 ton long wheelbase dually. Not escalades, expeditions, excursions, F150's, or H2 hummers. At least in my opinion. Ive attempted it with big boats and SRW. Didnt like it. My chart goes like this

1/2 ton pickups and suvs. 17-24FT boats.
3/4 ton pickups 24-29ft boats.
1 Ton dually 30-38ft boats. Maybe not even some 37-38'.
Medium duty Freightliners, F650, etc, 38-44ft.
Class 8 semi, 44+.

Offshorexcursion, go put your 33' outlaw and excursion on the truck scales. I'll bet you come out around 20k lbs with fuel and gear. If you blow a rear tire at 65mph, do you feel ok with one tire supporting 20k lbs at the pivot point of a 55ft long rig on a rainy day? In my opinion (being a trucker by trade) that rear axle of the pulling unit is the most important of the 5-6 axle group. :drink:

Please post pics of your medium duty and dually boat trailer since dually's are so much safer.

BTW I tow a 50' car hauler behind a SRW Dodge for a living. (over a million miles logged 100% DOT record and accident free).....and my girlfriend drives too!!!! :)

502ss 12-08-2011 08:42 PM


Originally Posted by offshorexcursion (Post 3567331)
Please post pics of your medium duty and dually boat trailer since dually's are so much safer.

BTW I tow a 50' car hauler behind a SRW Dodge for a living. (over a million miles logged 100% DOT record and accident free).....and my girlfriend drives too!!!! :)

Curious why so much hatred towards DRW? Your entitled to your opinion as are we all but if there was no place in the heavy duty pickup market for DRW then they would have gone out of production a long time ago. I have towed my 30' scarab with both a SRW and now a DRW and I love the DRW, it definitely feels more stable and twice the amount of traction on a wet ramp(considering it is only 2wd)

HabanaJoe 12-08-2011 09:04 PM


Originally Posted by Expensive Date (Post 3567301)
All I know is I have towed with SRW and DRW and I will never tow with SRW again.

No disrespect intented but if you say that with 100% conviction, unless you had a truck failure i would say you had a bad feelings while towing it is most likely the trailer not the DRW vs SRW that made your problem.

I only comment here on things I know about, if you look at my photos on here there is one when I was 21 years old and had 350 trucks and trailer by then and they were not my father's or father-in-laws. I know this argument well and trailer weight distribution and axle position is more likely why people feel how they do then SRW vs DRW, the DRW compenstates or masks the underlying problem.

quick story - 1984 just when the laws were changing so we could run double 28's anywhere, I ordered 40 sets from Monon. Our company the day the law went into effect was the first comapny ever to run doubles coast to coast non-stop 60hrs NYC to LAX. We hauled clothing 100% so the loads were very light and we had problems week 1 with the trailers - they swayed alot. Monon came out to NJ and they followed me on the NJ Turnpike and at about 80mph the sway started. We went back to yard, cut off the 5th wheel off the converter dolley and moved it 4" and went righ back out. I was in the left hand lane running high 90's MPH and no sway at all. That little adjustment mad e the trailers track better because we always had very light loads, we move all 40 dolloey and rest is history.

I just trying to say, I believe of the problems people think they have with the truck is the trailer set-up and most people again not to insult anyone at all don't realize what they need to do to correct it.


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