Reply
 
Thread Tools Display Modes
Old 09-30-2014, 02:50 AM   #1
Member
 
Join Date: Oct 2013
Posts: 87
Added airbags - proper WD hitch setup?

Just looking for someone to check my work here -

I added airbags to my truck this week to improve the ride when towing.

I'm using a 14k lb. equalizer 4-way hitch.

Prior to airbags, the rear end of my truck would sag about 2 inches with the trailer attached. So, I moved the hitch head down one hole on the shank, which results in the ball being about 2 inches lower. Now, if I air up to where the truck is level, the ball should be in the same place it was prior and provide the same amount of weight transfer and anti-sway friction on the spring bars.... right?

I didn't have time to hitch it up and go for a test ride last weekend, but I'm heading out for a 600 mile trip next weekend.

Thanks!
__________________

__________________
Just me, my girlfriend and our crazy Boxer Stella.
'13 GMC 1500 Sierra Denali, '14 Stealth SS1913, '08 YFZ450 with some crazy engine mods.
vocoder is offline   Reply With Quote
Old 09-30-2014, 05:45 AM   #2
Engineer of Crazy Train
 
ChooChooMan74's Avatar
 
Join Date: Sep 2012
Location: Tiverton, RI
Posts: 1,559
Should be close. Just remember, 2" at the tires will be slightly more than 2" at the ball.
__________________

__________________
TV - 2015 Ram Truck EcoDiesel
TV - 2006 Jeep Liberty Turbo Diesel (Retired to Daily Driver)
TT - 2015 Rockwood Roo 183
Locomotive Engineer
Nights Camping --- 2015 - 19 Camped | Winterized -- 2014 -18
Come read my Camping Blogs
ChooChooMan74 is offline   Reply With Quote
Old 09-30-2014, 07:02 AM   #3
Phat Phrog Stunt Team
 
AquaMan's Avatar
 
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 6,477
Quote:
Originally Posted by vocoder View Post
Just looking for someone to check my work here -

I added airbags to my truck this week to improve the ride when towing.

I'm using a 14k lb. equalizer 4-way hitch.

Prior to airbags, the rear end of my truck would sag about 2 inches with the trailer attached. So, I moved the hitch head down one hole on the shank, which results in the ball being about 2 inches lower. Now, if I air up to where the truck is level, the ball should be in the same place it was prior and provide the same amount of weight transfer and anti-sway friction on the spring bars.... right?

I didn't have time to hitch it up and go for a test ride last weekend, but I'm heading out for a 600 mile trip next weekend.

Thanks!
I have several questions. Why such heavy weight bars on a trailer that weighs about half as much? I'm also wondering if your hitch was set up properly to begin with. When you say "sag", is that 2" below "level", or is it 2" below starting point? My truck drops 2" and is level. When I had TT and used WD hitch, my height measurements were within 1/2" front to back when properly set. I would get WD hitch set to remove sag then use airbags to control ride bounce.
__________________
2016 Georgetown 364TS
Nights Camped 2017 - 49
AquaMan is offline   Reply With Quote
Old 09-30-2014, 12:24 PM   #4
Member
 
Join Date: Oct 2013
Posts: 87
AquaMan,

I guess I should have said "2 inches below the starting point" as the truck is almost level when connected. I was able to pull the trailer about 20 miles with the bags before I changed the hitch and to get a decent ride, the trailer was nose-high.

I negotiated with the dealer for the largest hitch for free - just because.
__________________
Just me, my girlfriend and our crazy Boxer Stella.
'13 GMC 1500 Sierra Denali, '14 Stealth SS1913, '08 YFZ450 with some crazy engine mods.
vocoder is offline   Reply With Quote
Old 09-30-2014, 02:19 PM   #5
Moderator Emeritus
 
MtnGuy's Avatar
 
Join Date: Sep 2008
Location: Shenandoah Valley
Posts: 9,274
Quote:
Originally Posted by AquaMan View Post
Why such heavy weight bars on a trailer that weighs about half as much? I'm also wondering if your hitch was set up properly to begin with.
I have the same questions as AquaMan. Even though Equal-i-zer owners have previously stated that Equal-i-zer stated bigger spring bars are OK, having 1400 lb. bars on a trailer that could get by with 1000 lb. bars seems a bit excessive. That would give you a really stiff ride.

If the hitch was not setup correctly from the get go with not enough weight distributed to the TV front axle, then that could be the reason for the rear end sag. It might be good to get to some scales for some axle weights. 3 weights will tell you a lot: 1 with the truck only, 1 with the truck and trailer without spring bars in place, and 1 with the spring bars in place. Nothing should be different with passengers or cargo with all of the weigh-ins.
__________________

Chap , DW Joy, and Fur Baby Sango
2017 F350 Lariat CCSB, SRW, 4x4, 6.7 PS
2017 Grand Design Reflection 337RLS
MtnGuy is offline   Reply With Quote
Old 09-30-2014, 05:07 PM   #6
Member
 
Join Date: Oct 2013
Posts: 87
MtnGuy, I've weighed the combo in the way you suggest a couple of times, albeit prior to the airbags. There was good distribution between the front and rear of the TV with the trailer fully loaded. I'm at work now (without my receipts) but if I had to guess, I'd say the delta was maybe 200lbs between F and R and the truck was very close to level (down abt. 2" from unloaded height).
__________________
Just me, my girlfriend and our crazy Boxer Stella.
'13 GMC 1500 Sierra Denali, '14 Stealth SS1913, '08 YFZ450 with some crazy engine mods.
vocoder is offline   Reply With Quote
Old 09-30-2014, 06:19 PM   #7
Phat Phrog Stunt Team
 
AquaMan's Avatar
 
Join Date: Apr 2012
Location: Tipp City, OH
Posts: 6,477
In that case don't raise the rear of the truck with airbags. Inflate the bags to the point that it starts to raise the truck and quit. Set up you truck and hitch without the bags inflated.


Sent from my iPhone using Forest River Forums
__________________
2016 Georgetown 364TS
Nights Camped 2017 - 49
AquaMan is offline   Reply With Quote
Old 10-01-2014, 01:02 AM   #8
Member
 
Join Date: Oct 2013
Posts: 87
Sounds good. Thank you for your replies!
__________________

__________________
Just me, my girlfriend and our crazy Boxer Stella.
'13 GMC 1500 Sierra Denali, '14 Stealth SS1913, '08 YFZ450 with some crazy engine mods.
vocoder is offline   Reply With Quote
Reply

Tags
airbags, hitch

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



» Virginia Campgrounds

Reviews provided by




ForestRiverForums.com is not in any way associated with Forest River, Inc. or its associated RV manufacturing divisions.


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -5. The time now is 09:37 AM.