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Topic Review (Newest First)
08-20-2019 12:16 PM
Java Unfortunately the fronts are a bitch to get in and out!

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08-20-2019 11:34 AM
CarterKaft
Quote:
Originally Posted by Java View Post
Got to thinking. If I disconnect the shocks and drive it, that should take them out of the equation for harshness. I will get bounce, but it should help nail things down perhaps?

That's what I was thinking. I don't have any shocks at all on the rear of my service truck, too heavy to need them I guess.
08-20-2019 08:45 AM
Java
Quote:
Originally Posted by GLTHFJ60 View Post
Spring rate too high in the bags. bdkw1's theory is easy to test, but I'm skeptical that your shocks are so stiff that it's causing the jarring you describe. If that were the case, the shock bushings would be destroyed in a hurry with that heavy of a rig over that kind of terrain.
My only concern is the digressive valving. Did some reading and definately goes with what I feel on the washboard etc.

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08-20-2019 08:20 AM
GLTHFJ60 Spring rate too high in the bags. bdkw1's theory is easy to test, but I'm skeptical that your shocks are so stiff that it's causing the jarring you describe. If that were the case, the shock bushings would be destroyed in a hurry with that heavy of a rig over that kind of terrain.
08-20-2019 08:10 AM
Java
Quote:
Originally Posted by GLTHFJ60 View Post
Yes.

Shocks will only make bumps/potholes harsh if they're too stiff. I don't think that's your issue.
And what do you think the issue is?
08-20-2019 07:44 AM
GLTHFJ60
Quote:
Originally Posted by Java View Post
Got to thinking. If I disconnect the shocks and drive it, that should take them out of the equation for harshness. I will get bounce, but it should help nail things down perhaps?
Yes.

Shocks will only make bumps/potholes harsh if they're too stiff. I don't think that's your issue.
08-20-2019 07:39 AM
Java Got to thinking. If I disconnect the shocks and drive it, that should take them out of the equation for harshness. I will get bounce, but it should help nail things down perhaps?
08-19-2019 06:01 PM
Java
Quote:
Originally Posted by bdkw1 View Post
You will just be bouncing off the internal bump in the bag that much sooner. I usually run a little antifreeze in the bags to increase the rising rate.



Talk to Ryan at Acutune. He builds lots of shocks for lots of different vehicles.
Thanks will do!

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08-19-2019 04:35 PM
bdkw1
Quote:
Originally Posted by Java View Post
Won't they keep the spring rate from rising as quick?
You will just be bouncing off the internal bump in the bag that much sooner. I usually run a little antifreeze in the bags to increase the rising rate.

Talk to Ryan at Acutune. He builds lots of shocks for lots of different vehicles.
08-19-2019 04:33 PM
Java
Quote:
Originally Posted by FirstRam View Post
When was the last time "not being easy" scared you off?
Occasionally [emoji1787] I don't have a tig welder.....

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08-19-2019 04:32 PM
FirstRam
Quote:
Originally Posted by Java View Post
Thanks!

One thing to remember though, I have no springs other than the airbags. Adding a large Port could probably be done, but would not be easy.

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When was the last time "not being easy" scared you off?
08-19-2019 04:20 PM
Java
Quote:
Originally Posted by FirstRam View Post
Dodge 2500 with Carli leafs, I need to run 25-30 psi to level my trailers 1200 lb tongue weight. I added 1.3 gallon tanks plumbed with 3/8" lines on my firestone bags, made a difference with rebound harshness. A larger hose would be better.
If you have access to the top plate of the bags when they are installed, you can TIG a larger NPT bung for more flow. We use triple bellow air springs for various gags at work and our first order of business is to add 2" ports.


I will say that I did add a touch more rebound valving to my 2.5" Kings to help with porpoising on some shitty concrete roads.
Thanks!

One thing to remember though, I have no springs other than the airbags. Adding a large Port could probably be done, but would not be easy.

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08-19-2019 04:02 PM
FirstRam Dodge 2500 with Carli leafs, I need to run 25-30 psi to level my trailers 1200 lb tongue weight. I added 1.3 gallon tanks plumbed with 3/8" lines on my firestone bags, made a difference with rebound harshness. A larger hose would be better.
If you have access to the top plate of the bags when they are installed, you can TIG a larger NPT bung for more flow. We use triple bellow air springs for various gags at work and our first order of business is to add 2" ports.


I will say that I did add a touch more rebound valving to my 2.5" Kings to help with porpoising on some shitty concrete roads.
08-19-2019 03:44 PM
Java
Quote:
Originally Posted by bdkw1 View Post
Ping tanks will fuck up your spring rate and make it real easy to bottom. Your issue is the the shocks. Bilstiens of your flavor use dirgessive valving. Makes it handle like a sports car on the road and ride like shit over chop. You need a rebuildable shock with bleed holes in the piston to make it ride good over the chatter and still have good bottoming resistance. Some King IBP shocks would work wonders.
Won't they keep the spring rate from rising as quick?

Suggestions on who to talk to about shocks? Wish there was someone local but it doesn't seem there is much

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08-19-2019 03:08 PM
bdkw1 Ping tanks will fuck up your spring rate and make it real easy to bottom. Your issue is the the shocks. Bilstiens of your flavor use dirgessive valving. Makes it handle like a sports car on the road and ride like shit over chop. You need a rebuildable shock with bleed holes in the piston to make it ride good over the chatter and still have good bottoming resistance. Some King IBP shocks would work wonders.
08-19-2019 02:08 PM
Java
Quote:
Originally Posted by CarterKaft View Post
See the link I posted for that exact recommendation...
My understanding is the size does matter and needs to be as large as possible, the flow rate through 1/4" PTC air line is miserable.
Yeah my concern is that its still a 1/4" fitting at the bag. Will do more research.... I have two dead compressors with one gallon tanks sitting here.....

Think 3/8" line is big enough?
08-19-2019 01:53 PM
CarterKaft See the link I posted for that exact recommendation...
My understanding is the size does matter and needs to be as large as possible, the flow rate through 1/4" PTC air line is miserable.
08-19-2019 01:51 PM
CarterKaft Good ping tank discussion
https://www.powerstrokenation.com/fo...ension-10.html
08-19-2019 01:45 PM
Java
Quote:
Originally Posted by CarterKaft View Post
Yeah the gents discussing the ping tanks are putting the full air ride (front/rear) systems on their just ordered '19 F-350 Limited's, different tax bracket than my usual crowd LOL
Ha! I was finding info from the truck camper guys.

Now the real question, how much does the airline size really matter? I see kelderman uses 3/4, but the truck camper guys have been using 3/8 or even 1/4". Think a 1 gallon tank per side is enough?

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08-19-2019 01:40 PM
CarterKaft
Quote:
Originally Posted by Java View Post
I have the kelderman kit in the front. It didn't have any tanks!
Yeah the gents discussing the ping tanks are putting the full air ride (front/rear) systems on their just ordered '19 F-350 Limited's, different tax bracket than my usual crowd LOL
08-19-2019 01:31 PM
Java @carterkraft, Googled. Thank you!

Ping tanks just increase the air volume in the system, supposedly keeps the spring rate more linear through compression. Sounds like a cheap (ish) thing to try first! I will have to see what size tanks and where I can stash them under the truck. Running more air lines..... Yay.....
08-19-2019 01:11 PM
Java
Quote:
Originally Posted by CarterKaft View Post
Another topic came up in regards to Keldermans full air ride setup has 3 gallon (per side) ping tanks and 3/4" lines. Do you know anything about ping tanks?
I know nothing of "ping" tanks.... Off to google. I have the kelderman kit in the front. It didn't have any tanks!
08-19-2019 01:00 PM
CarterKaft Another topic came up in regards to Keldermans full air ride setup has 3 gallon (per side) ping tanks and 3/4" lines. Do you know anything about ping tanks?
08-19-2019 12:41 PM
Java
Quote:
Originally Posted by DE Jeeper View Post
What i have been finding is that better shocks only really work with more articulation. Not sure how to get more range on your truck. I would think u would need a large co to handle the weight. Maybe a larger diameter bag in the back so u can lower the pressure?
Back is pretty good with the springs there, the bags have ~10 psi in them.

Yes it would need to be a large CO for sure. Im just not sure it would help, spring rates needed for 6200lbs are probably similar to the bag spring rate.

Quote:
Originally Posted by CarterKaft View Post
I found there are some higher end shocks made for prevost style coaches that might be better suited to your weight than the usual 4x4 names.

Edit: And after thinking about it some more the regular 4x4 names shouldn't have a problem building you some shocks too as long as they can vsalve for your weight.

RoadKing Shocks - Taking Advanced Ride Control Technology To The Limit - RoadKing Shocks LLC

KONI | Truck and trailer dampers
Agreed on the shocks, I just have off the shelf F250/350 ones now. BUT is a shock going to effect the ride much when it feel like there just isnt much give on potholes etc. Its harsh.

Data on the bags. In theory i should be over 90 psi with 3100lbs/side on them. assuming I am reading that right.

08-19-2019 11:56 AM
CarterKaft I found there are some higher end shocks made for prevost style coaches that might be better suited to your weight than the usual 4x4 names.

Edit: And after thinking about it some more the regular 4x4 names shouldn't have a problem building you some shocks too as long as they can vsalve for your weight.

RoadKing Shocks - Taking Advanced Ride Control Technology To The Limit - RoadKing Shocks LLC

http://www.koni.com/en-US/Bus-Truck-...ailer-dampers/
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