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Author Topic: Dually or no  (Read 2727 times)

19GC45

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Dually or no
« on: April 22, 2011, 07:09:10 PM »
Assuming that a hitch along the lines of the Propride or Pullrite is installed for stability, I'm looking for opinion re the desirability of DRW, since stability seems to be the main advantage of same. Talking TT here, specifically AF 30U GVWR 10400#.
« Last Edit: April 22, 2011, 07:46:56 PM by 19GC45 »
Glen

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19GC45

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Re: Dually or no
« Reply #1 on: April 23, 2011, 05:55:37 AM »
Assuming that a hitch along the lines of the Propride or Pullrite is installed for stability, I'm looking for opinion re the desirability of DRW, since stability seems to be the main advantage of same. Talking TT here, specifically AF 30U GVWR 10400#.

Well...

Looking at Ram 3500 towing specs and Changin' Gears calculator and reckoning in weight of bike, canopy, tools, 300#+ for a Pullrite hitch, another couple hundred pounds for whatever, plus 1400# hitch weight, I'd be well over GVWR on the truck with SRW.  I guess that answers my question. Dually it is. About 2000# additional payload.
 
Glen

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Gary RV_Wizard

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Re: Dually or no
« Reply #2 on: April 23, 2011, 07:28:12 AM »
As you have already seen, the primary advantage of the dually is increased rear axle load capacity, with a commensurate increase in GVWR.

This is a diesel 3500, right? I'm kind of surprised you need the dually just for the weight. The SRW should have payload capacity of at least  3000 lbs and GVWR  of 10,100 lbs. You need the 3.73 or 4.10 gears, though, for a trailer that that size/weight.
« Last Edit: April 23, 2011, 07:36:11 AM by Gary RV Roamer »
Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

19GC45

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Re: Dually or no
« Reply #3 on: April 23, 2011, 02:29:38 PM »
As you have already seen, the primary advantage of the dually is increased rear axle load capacity, with a commensurate increase in GVWR.

This is a diesel 3500, right? I'm kind of surprised you need the dually just for the weight. The SRW should have payload capacity of at least  3000 lbs and GVWR  of 10,100 lbs. You need the 3.73 or 4.10 gears, though, for a trailer that that size/weight.

These are my calculations:

Ram 4x4 Quad Cab 3500
   DH8L42  Long Box ST
   SRW

   PAYLOAD-                                2890#

   PASSENGER(S)/BELONGINGS       400#
   PULLRITE HITCH                      350#
   BIKE                                       750#
   CANOPY/TOOLS                                 500#
   MISCELLANEOUS             250#
   HITCH WEIGHT                        1400#

   TOTAL               3650#


   ARCTIC FOX 30U-LOADED
   TONGUE WEIGHT 1400#
   GVWR 10400#

Some of these are guesstimates, but I don't think I could drop 750# & could wind up even higher depending on what I find I have to carry. I'd rather err on the side of caution.
I know the Ram offers less payload/GVWR than other makes, but it's the only one with the Cummins.

Glen

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Gary RV_Wizard

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Re: Dually or no
« Reply #4 on: April 23, 2011, 04:18:27 PM »
OK, you chose the 3500 configuration with a low payload, maybe the 4x4 Megacab. I don't see a configuration with a 2890 payload, but my Ram brochure shows one with 2980, and that is still a dually model (it is flagged with a '2', which means DRW).    With your 750# bike and 500# of tools & cap, you definitely need much more payload with all that weight. Looks to me like you need the DRW with 4.10 gears, which gets you 4680# in a Crew Cab, DRW, 4x4 Long Box. I don't see a MegaCab configuration that gets the capacity you need.

I'm using the figures from the 2011 2500/3500 brochure - http://www.ramtrucks.com/en/pdf/2011_ram_2500_3500.pdf

There may be a payload upgrade option available that would let you use the 3.73 axle - check the options list.
Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

19GC45

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Re: Dually or no
« Reply #5 on: April 23, 2011, 08:34:41 PM »
OK, you chose the 3500 configuration with a low payload, maybe the 4x4 Megacab. I don't see a configuration with a 2890 payload, but my Ram brochure shows one with 2980, and that is still a dually model (it is flagged with a '2', which means DRW).    With your 750# bike and 500# of tools & cap, you definitely need much more payload with all that weight. Looks to me like you need the DRW with 4.10 gears, which gets you 4680# in a Crew Cab, DRW, 4x4 Long Box. I don't see a MegaCab configuration that gets the capacity you need.

I'm using the figures from the 2011 2500/3500 brochure - http://www.ramtrucks.com/en/pdf/2011_ram_2500_3500.pdf

There may be a payload upgrade option available that would let you use the 3.73 axle - check the options list.


Dodge has tables back to 2002.
It's unlikely I'll be buying anything younger than 2008.

Here's a 2006 model as an example:

Ram 4X4 Reg.Cab 3500
DH8L62 Long Box ST
DRW

5.9L 24V TDHO  -   A4   -   3. 73    -  12,200  -   5, 200   -   6,999  -   4, 151  -    2,848  -   5,200  -    9,350  -     21,000  -     13,850

Items underlined are GVWR, Payload, GCWR & Max Trailer Weight.
The same model with SRW has  a payload of 2830#, almost 2400# less.

But I guess the higher payload puts me over GCWR; loading the truck & trailer to their max GVWR gives you 10400 + 12200 = 22600#.

Either the manual transmission or the 4.10 rear end will add 2000# GCWR with a minor loss of payload.
The manual transmission is easier to find used and exhaust brakes for it more readily available.
Glen

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Carl L

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Re: Dually or no
« Reply #6 on: April 23, 2011, 09:18:27 PM »
One item I noticed in your numbers, Glen, is the tongue weight.  The ProPride is a weight distributing hitch.   Properly adjusted for running, that hitch should transfer a significant portion of that tongue weight onto the front axle.   For the purposes here, I would use 50% as the number.  Thus 700# of that 1400# tongue weight should land on the front axle and only 700# on the rear. 
Carl L/LA   [Forum Staff]  KI6SEZ

Prowler 23LV TT pulled by a '95 Ford Bronco

19GC45

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Re: Dually or no
« Reply #7 on: April 23, 2011, 09:47:44 PM »
One item I noticed in your numbers, Glen, is the tongue weight.  The ProPride is a weight distributing hitch.   Properly adjusted for running, that hitch should transfer a significant portion of that tongue weight onto the front axle.   For the purposes here, I would use 50% as the number.  Thus 700# of that 1400# tongue weight should land on the front axle and only 700# on the rear.

Thanks, I didn't think of that; but the issue has turned out to be payload, which wouldn't be affected by that. I think my question about duallies has been answered to my satisfaction. I'd still like to hear about hitches but perhaps that should be another post.
I'll search the forum.
The Pullrite is also weight distributing.
Glen

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Gary RV_Wizard

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Re: Dually or no
« Reply #8 on: April 24, 2011, 09:21:48 AM »
You don't need to worry about payload numbers if you weigh by axle and stay within the GAWR of both axles. Payloa dis basically a shortcut for estimating purposes (and so is Max Tow Capacity). If you go to the GAWRs and GCWR and actually weigh things, you are dealing directly with the source numbers.
Gary
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Gary Brinck
Summers: Black Mountain, NC
Home: Ocala National Forest, FL

 

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