RV.Net Open Roads Forum: Toy Haulers: Toyhauler hitch/truck setup

RV Blog

  |  

RV Sales

  |  

Campgrounds

  |  

RV Parks

  |  

RV Club

  |  

RV Buyers Guide

  |  

Roadside Assistance

  |  

Extended Service Plan

  |  

RV Travel Assistance

  |  

RV Credit Card

  |  

RV Loans

Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Toy Haulers

Open Roads Forum  >  Toy Haulers  >  Toy Haulers

 > Toyhauler hitch/truck setup

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next
Sponsored By:
RoyBell

Chicago

Senior Member

Joined: 06/03/2015

View Profile


Offline
Posted: 06/29/20 09:14am Link  |  Quote  |  Print  |  Notify Moderator

We have a Grand Design 320G and would like some input on the current setup.

I have a Ram 2500 with aftermarket airbags. It's a Megacab with 6 1/2' bed. The hitch is a gooseball/ reese goosebox.

Our first trip was over 2000 miles and the camper felt very stable and I had no issues towing. We did have the 1000 lb Harley in the garage and approx 800 lb water ballast. The truck was just the Wife and myself.

The trip this weekend was more local and we did not have much weight in the garage. I did fill the camper fuel cell this time (approx 250 lbs), whereas it was empty on the first trip. A couple bicycles and our usual grill/spare tire. I filled the water tanks full (approx 950 lbs). The truck had wife, myself, and 2 young adults (300 lbs extra if even) The camper pulled ok, but not nearly as stable as the first trip.

Now for the questions

-Was this the cause of not having the extra weight in the garage? I was hoping to get a golf cart for this trip but ran out of time. I know TH generally run better weight in the garage

-I have been debating getting an 8' bed truck, but holding for hopefully a redesigned HD Cab from Ram (2021/2022 rumors). The Ram with 8' bed is approx 9" longer than the Megacab I have. 160.5 vs 169". Would 8.5" in wheel base make any significant difference in stability? I have no interest in a Dually since I live in suburbs and have to park in Chicago sometimes.

-Should I lower the front of my camper? Right now I have a hair over 7" clearance to the bedrails. The bolts on the pin box are 2" increments. It's sitting a little low in the rear currently. (I would guess approx 2") If I lower a bolt hole it lowers my clearance to 5". Or I could get an extended ball and get to 6" clearance. I believe everyone says 6-7" is ideal. I also have new tires on the rear for this trip which are approx 1/2" taller than the Fall trip last year, raising the front a little more. If I put too much air in my air bags it makes the problem worse by raising the front of the camper more.

It's hard to tell from a picture, but this is the best side view I have from when we picked it up: [image]

Appreciate any insight on this.

corvettekent

Marysville, WA

Senior Member

Joined: 09/21/2014

View Profile



Good Sam RV Club Member

Offline
Posted: 06/29/20 09:33am Link  |  Quote  |  Print  |  Notify Moderator

On your next trip stop at a CAT scale and weigh the truck and trailer, then disconect the trailer and weigh the truck. You might be surprized how much you are unloading the front axle.


2007.5 GMC Dually EC/LB, LMM. Banks IQ, Speed Brake, Six Gun. B&W Turnover Ball, Companion Hitch, Amp power steps. Hadley Air horns.

2004 32' Carriage 5th wheel. 860 watts of solar MPPT and four 6 volt batteries. Samlex 2,000 watt Pure Sine Wave Inverter.


smarty

new mexico

Senior Member

Joined: 04/23/2012

View Profile


Offline
Posted: 06/29/20 10:06am Link  |  Quote  |  Print  |  Notify Moderator

since you used the setup before and it handled well it is likely that the unstableness was a result of a difference in weight distribution. Agree with above comment about getting weighed. I would not change a thing until I fully understood the issue.

RoyBell

Chicago

Senior Member

Joined: 06/03/2015

View Profile


Offline
Posted: 06/29/20 11:00am Link  |  Quote  |  Print  |  Notify Moderator

I have to drop it off this week for some service to be done. I might be able to hit a scale since I won't have a nagging family breathing down my neck.

It will be dry without the bike in the back. Not sure that will help much.

fj12ryder

Platte City, MO

Senior Member

Joined: 08/19/2003

View Profile



Posted: 06/29/20 11:33am Link  |  Quote  |  Print  |  Notify Moderator

Just out of curiosity, how far behind the rear axle is the hitch mounted? By that I mean where does the weight rest in the bed with respect to the rear axle. And where is your fresh water tank located?

Kind of hard to tell exactly, but the trailer looks pretty level to me.


Howard and Peggy

"Don't Panic"

Y-Guy

Tri-Cities, WA

Moderator

Joined: 03/04/2002

View Profile



Good Sam RV Club Member

Offline
Posted: 06/29/20 12:45pm Link  |  Quote  |  Print  |  Notify Moderator

RoyBell talk to the dealer, many have portable scales you can get weighed right on the spot.


2007 Winnebago Sightseer 35J
2011 Jeep Wrangler

bakedalaskan1

North Pole, AK

New Member

Joined: 07/18/2012

View Profile





Offline
Posted: 06/29/20 01:32pm Link  |  Quote  |  Print  |  Notify Moderator

How was the wind? Wind makes a huge difference in the way the rig feels in the driver's seat. My experience with toyhaulers and over 50,000 miles and all kinds of weight configurations is wind is the primary culprit. With what you described; your rig should have pulled better in the second scenario with the garage unloaded.

RoyBell

Chicago

Senior Member

Joined: 06/03/2015

View Profile


Offline
Posted: 06/29/20 02:46pm Link  |  Quote  |  Print  |  Notify Moderator

fj12ryder wrote:

Just out of curiosity, how far behind the rear axle is the hitch mounted? By that I mean where does the weight rest in the bed with respect to the rear axle. And where is your fresh water tank located?

Kind of hard to tell exactly, but the trailer looks pretty level to me.


Hitch/ball is roughly right over the axle, if not slightly ahead of.

[image]

I just looked under the camper and I think (it's all covered) the fresh water might actually be just behind the trailer axles. The overflow and main dump are there. The fuel cell is located under the garage, at the very back. The cleanouts are coming from above the axle and in front of the axle.

That makes me think the greys and black are actually towards the front of the camper.

This now makes me think I didn't have enough air in my airbags. Without the extra counterbalance of the bike at the back of the trailer, a lot more weight was on the truck than I originally though. I only had the fresh water partially full the first trip. With the bike that's putting almost 2K lbs behind the trailer axles.

I didn't try running pressure past 35 lbs since that worked the best on the first trip.

Specs list dry weight @ 12,400 with Pin @ 2300. The tag lists mine @ 13,200. With the generator my rough estimate on pin was 2,600.

I assume filled up and running without any toys I am 14,500 lbs with 3,200 pin. That should put it right around 22% which seems like where it should be. I realize these are assumptions on my part for weights based on literature.

Grit dog

Black Diamond, WA

Senior Member

Joined: 05/06/2013

View Profile


Online
Posted: 06/29/20 02:51pm Link  |  Quote  |  Print  |  Notify Moderator

Presumably it took more air the second trip to level up your truck (heavier pin due to less weight aft in the TH)? You can easily approximate the difference in pin weight, assuming 6" dia airbags, or whatever they are, cross sectional areas of both bags x the difference in psi from your heavy setup to your light setup will get you close to the difference in pin weight to help see if it could be a primary cause of the difference in handling.


"Yes Sir, Oct 10 1888, Those poor school children froze to death in their tracks. They did not even find them until Spring. Especially hard hit were the ones who had to trek uphill to school both ways, with no shoes." -Bert A.

RoyBell

Chicago

Senior Member

Joined: 06/03/2015

View Profile


Offline
Posted: 06/29/20 02:53pm Link  |  Quote  |  Print  |  Notify Moderator

bakedalaskan1 wrote:

How was the wind? Wind makes a huge difference in the way the rig feels in the driver's seat. My experience with toyhaulers and over 50,000 miles and all kinds of weight configurations is wind is the primary culprit. With what you described; your rig should have pulled better in the second scenario with the garage unloaded.


Wind didn't seem bad.

First trip, over 2K miles I had to watch from pulling it at 80 since the trailer was so balanced and the truck was happy. This trip I felt better at 65. Over 70 and it wanted to sway and the truck felt more "floaty". I don't expect to travel often without some type of weight in the garage. We just didn't get a chance to get a cart yet and she said we wouldn't have time to ride so no Bike [emoticon].

If all it needs is weight in the back to be happy, that's easy [emoticon]. I just wasn't sure if a slightly longer wheel base or lowering the front some would be helpful.

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Page of 2  
Next

Open Roads Forum  >  Toy Haulers  >  Toy Haulers

 > Toyhauler hitch/truck setup
Search:   Advanced Search

Search only in Toy Haulers


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:




© 2020 CWI, Inc. © 2020 Good Sam Enterprises, LLC. All Rights Reserved.