2006 is too high in the front - Page 9 - Chevy and GMC Duramax Diesel Forum
Suspension&Steering Discuss what Mods for the suspension & steering are right for you.

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post #81 of 89 (permalink) Old 06-02-2019, 05:47 PM Thread Starter
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Taking the air out of the bags! Brilliant! I guess that is why you are called a Duramax Fanatic. I'm going to have to try that. I do carry around a little pancake compressor to adjust the bags. I also bought a crappy 12V one off Amazon, but it really struggles. As it stands I left my left and right bags independent, so that means always switching the compressor (it threads on). I could just run them together.

I do have boards to drive on to, so there is that option too.

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Last edited by johnniemo; 06-02-2019 at 06:48 PM.
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post #82 of 89 (permalink) Old 06-02-2019, 07:34 PM
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If you have a actual camper in your truck, something like a cab over camper, then itís usually a good idea to have the rear bags with separate airlines.
Even on a motor home where one side could be heavier than the other side, separate airlines is suggested left and right.
BUT
On a truck with a 5th wheel, gooseneck, ball mount where the weight is centered on the rear, single line going to both airbags is really all you need.

The airbag companies will tell you this on both ways depending on your situation.
Air will transfer side to side back and forth in the bags as you lean into a curve, dip with a single line.
One gauge with single line or 2 gauge with dual lines.

Some will still go with separate lines anyway because this makes them feel safer.

First picture (not all that great) is for dual lines bags thereís a red needle for right side black needle for left side, dual control.
I have this on my MH.

Bottom picture is on my truck, single line, what I like about this one is it always maintains no less than 5 psi in the bags at all times.
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post #83 of 89 (permalink) Old 06-02-2019, 07:38 PM
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Quote:
but it really struggles
It must be a whole new level of crap. It hardly takes any air to change the psi on 'em.
A manual bike pump will do it, in seconds.

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post #84 of 89 (permalink) Old 06-02-2019, 08:14 PM Thread Starter
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Originally Posted by Hook'em_Horns! View Post
It must be a whole new level of crap. It hardly takes any air to change the psi on 'em.
A manual bike pump will do it, in seconds.
Well it maxes out at 58psi, and takes several minutes to get there, even on one bag. So long as that is all I want, it should be fine. My plan was to go this year and see how often I was screwing with the bags (and the tires) and then decide what the best approach might be. For now the pancake compressor can fill it in seconds.

Here is the dumpy thing here:



https://www.amazon.ca/gp/product/B07...?ie=UTF8&psc=1

It has the digital readout so I was thinking I could just set it to the pressure I want it to maintain and have a power switch. It would always keep whatever pressure I want. It was going to be my poor man's solution, but then it sucked.

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post #85 of 89 (permalink) Old 06-02-2019, 08:30 PM Thread Starter
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Originally Posted by D_R_C View Post

The airbag companies will tell you this on both ways depending on your situation.
Air will transfer side to side back and forth in the bags as you lean into a curve, dip with a single line.
One gauge with single line or 2 gauge with dual lines.
This is an interesting thought experiment. With the bags sharing the same supply, a corner would have the air transfer from the outside bag to the inside bag, resulting in a more aggressive lean than you would otherwise have. This seems like a pretty good reason to keep them separate. With that said, this situation is pretty remote given that I'm not racing with this rig.

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Last edited by johnniemo; 06-02-2019 at 09:13 PM.
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post #86 of 89 (permalink) Unread 06-18-2019, 05:10 PM Thread Starter
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2006 is too high in the front

Did my first big tow this weekend. I weighed the rig and got the following results:

Front axle: 4387 lbs
Rear axle: 5654 lbs
Trailer axles: 8096 lbs

GCW: 18147 lbs (trailer works out to about 10,500).

I had 60psi in the rear tires and 60psi in the bags. The tow was incredibly mundane. I was shocked at how stable it was.



Truck rides very level now and Iím very happy with it. Mileage was shockingly good varying from 14 to 18 MPG.

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post #87 of 89 (permalink) Unread 06-18-2019, 05:34 PM
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Good to hear. Thanks for the update.


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post #88 of 89 (permalink) Unread 06-18-2019, 07:05 PM
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Quote:
Originally Posted by johnniemo View Post
Did my first big tow this weekend. I weighed the rig and got the following results:

Front axle: 4387 lbs
Rear axle: 5654 lbs
Trailer axles: 8096 lbs

GCW: 18147 lbs (trailer works out to about 10,500).

I had 60psi in the rear tires and 60psi in the bags. The tow was incredibly mundane. I was shocked at how stable it was.



Truck rides very level now and Iím very happy with it. Mileage was shockingly good varying from 14 to 18 MPG.
You're not calculating something correctly, no way in hell you will 14 - 18 mpg pulling 10,000 lbs. Probably closer to 10-12

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post #89 of 89 (permalink) Unread 06-18-2019, 09:33 PM Thread Starter
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Originally Posted by rockn69 View Post
You're not calculating something correctly, no way in hell you will 14 - 18 mpg pulling 10,000 lbs. Probably closer to 10-12
You are correct. Not sure how I got that number. It is around 10 MPG. Thanks for catching that. That will teach me to do it in my head.

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