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04-18-2014, 02:35 PM
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#1
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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Custom front airbag suspension
So how does one go about replacing the front springs with air bags? I has no problem relocating the front shocks. Any good articles?
Who is a good company to buy from? Looking for lowering and and ride comfort. I know how I'm doing the rear, it's the front I'm not sure what to do.
2wd truck if you're on Tapatalk.
Sent via USPS 2 weeks ago
__________________
Jon
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04-18-2014, 03:14 PM
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#2
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Name: Schrowang
Title: Schroowwwaaaannnnnggggggg
Status: Not Here
Join Date: May 2011
Location: China, illinois
Member`s Gallery
Posts: 5,897
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Buy the bag brackets from a fab shop or something. Weld one to the axle and another in place of the top mount. Add spacers if needed on either end of the bag.
Sent from my XT1080 using Tapatalk
__________________
BRAD
16 F350 platinum
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04-18-2014, 03:44 PM
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#3
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Name: Chris Tobin
Title: Too Much Time
Status: Not Here
Join Date: Jun 2008
Location: Dayton, TN
Member`s Gallery
Posts: 2,662
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Check out Ride Tech (formerly Air Ride Technologies) they know their stuff and have kits for MANY popular cars and trucks as well as fab parts for those wanting to do custom stuff. They are not the cheapest in air bag suspensions, but many would consider them the best!!!
http://www.ridetech.com
__________________
Chris Tobin
Editor--Ultimate Diesel Builder's Guide
Freelance Editor and Photographer
Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines
tobinemail@aol.com
I might be able to help get you in a mag.
Custom poster size photos available. PM or email for info.
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12-20-2014, 12:03 PM
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#4
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Name: Goose
Title: Alabama Pimpin'
Status: Not Here
Join Date: Sep 2009
Location: Alabama
Member`s Gallery
Posts: 3,359
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Is this thing on?
__________________
Grayson
2005 F-350 6.0l CCSB
SCT x3
Bulletproof Diesel
COMPETITIONDIESEL.COM
R.I.P. Dex
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12-20-2014, 12:26 PM
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#5
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Name: Schrowang
Title: Schroowwwaaaannnnnggggggg
Status: Not Here
Join Date: May 2011
Location: China, illinois
Member`s Gallery
Posts: 5,897
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Nope
__________________
BRAD
16 F350 platinum
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12-20-2014, 01:53 PM
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#6
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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Quote:
Originally Posted by Goose
Is this thing on?
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Thank you!
So I have narrowed it down to the bags I want I do believe.
Now stock replacement springs have an OD of 6", installed height of 11.25", and carry 2264lbs (Moog 7226 springs).
Going off of that, I think Ride Techs F6873 90006873 would be a good bag. 8" OD, 3400lbs capacity, double convoluted.
For the rears, I am going with the F2107 90002107 sleeved bag with 3500lbs load capacity.
I will install an engine driven OBA unit.
I hope to purchase all of this over the next 2-3 months.
__________________
Jon
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12-20-2014, 02:13 PM
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#7
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Name: Tate
Title: What?
Status: Not Here
Join Date: Nov 2007
Location: Airdrie, Alberta
Member`s Gallery
Posts: 3,419
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Whats the spring rate on those Moog springs? The 2264 lbs. sounds about right for the weight at the wheel, but the spring is basically at a 2:1 ratio with the a-arm, so the travel will be about half but the force will be about double.
__________________
'98 3500 2wd, 24v, 5 spd, p-pumped
'98 2500 4wd, 12v, 6 spd, VP'd
'02 VW Jetta, 5 spd.
My p-pump conversion pics
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12-21-2014, 06:35 AM
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#8
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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I cannot fine any of that. It just says load rating.
That said, on a vehicle that ways 5800lbs, wouldn't 6800lbs combined weight rating of the front bags be enough? I see these are used in chevy dually bagged setups all the time.
__________________
Jon
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12-21-2014, 02:20 PM
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#9
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Name: Tate
Title: What?
Status: Not Here
Join Date: Nov 2007
Location: Airdrie, Alberta
Member`s Gallery
Posts: 3,419
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I've never weighed the axle weights on my 2wd, but my 4wd was around 4600 on the front and 2600 on the rear. I'm betting that a 2wd would still be close to 4000 lbs. on the front end. So you might need close to 8000 lbs. of spring force for it. Not sure exactly what the ratio is, but its something that needs to be addressed.
Also, if you're using convoluted air bags, keep in mind that their load rating for a given pressures varies dramatically from minimum height to max height. Sleeve bags are a much more linear rating.
http://firestoneip.com/-/media/www/g...alogs/EMDG.pdf
Page 61 gives the load rating at various pressures/heights on a bag that's max rating is 5k lbs.
__________________
'98 3500 2wd, 24v, 5 spd, p-pumped
'98 2500 4wd, 12v, 6 spd, VP'd
'02 VW Jetta, 5 spd.
My p-pump conversion pics
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12-21-2014, 03:19 PM
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#10
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Name: Fahlin Racing
Title: Too Much Time
Status: Not Here
Join Date: May 2012
Location: NE Ohio
Member`s Gallery
Posts: 469
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If you want any more information regarding the Firestone products just PM me if you can not find what you want, I can help. Hopefully.
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12-21-2014, 04:26 PM
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#11
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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Quote:
Originally Posted by Tate
I've never weighed the axle weights on my 2wd, but my 4wd was around 4600 on the front and 2600 on the rear. I'm betting that a 2wd would still be close to 4000 lbs. on the front end. So you might need close to 8000 lbs. of spring force for it. Not sure exactly what the ratio is, but its something that needs to be addressed.
Also, if you're using convoluted air bags, keep in mind that their load rating for a given pressures varies dramatically from minimum height to max height. Sleeve bags are a much more linear rating.
http://firestoneip.com/-/media/www/g...alogs/EMDG.pdf
Page 61 gives the load rating at various pressures/heights on a bag that's max rating is 5k lbs.
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To get a bag that big, there would be no way for it to fit. 8" would be max before I run into suspension issues.
Doing some more digging, I'm finding 1144lbs/in according to O'Reilly auto parts.
__________________
Jon
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12-22-2014, 10:18 AM
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#12
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Name: Chris Tobin
Title: Too Much Time
Status: Not Here
Join Date: Jun 2008
Location: Dayton, TN
Member`s Gallery
Posts: 2,662
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Talk to the tech guys at Ride Tech they are sharp guys and design custom setups all the time, I would think they would be able to help you with proper air spring selection especially since you are planning on using their springs!
__________________
Chris Tobin
Editor--Ultimate Diesel Builder's Guide
Freelance Editor and Photographer
Working with DIESEL WORLD, DIRT SPORTS, MUSCLE CAR POWER & STREET TRUCKS magazines
tobinemail@aol.com
I might be able to help get you in a mag.
Custom poster size photos available. PM or email for info.
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12-26-2014, 12:20 PM
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#14
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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I'm not touching airbagit.
__________________
Jon
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12-27-2014, 09:37 PM
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#15
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Name: winkdemon
Title: Fast, Cheap or Reliable.
Status: Not Here
Join Date: Oct 2009
Location: calgary Alberta
Member`s Gallery
Posts: 248
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this is the bag i am going to use on my front setup
__________________
1995 cummins 2500 DD stock
1991 cummins race truck still to slow
2003 cummins 3500 tow pig 6.7 powered
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12-27-2014, 09:38 PM
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#16
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Name: winkdemon
Title: Fast, Cheap or Reliable.
Status: Not Here
Join Date: Oct 2009
Location: calgary Alberta
Member`s Gallery
Posts: 248
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here is the specs
http://firestoneip.com/-/media/www/g...W013585426.pdf
just need some brackets should be pretty easy to make
__________________
1995 cummins 2500 DD stock
1991 cummins race truck still to slow
2003 cummins 3500 tow pig 6.7 powered
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12-27-2014, 10:25 PM
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#17
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Name: hjoey
Title: Too Much Time
Status: Not Here
Join Date: Feb 2014
Member`s Gallery
Posts: 560
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Subd
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12-27-2014, 10:44 PM
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#18
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Name: SKYNYRD
Title: "Drunkard"
Status: Not Here
Join Date: May 2007
Location: Harpers Ferry, WV
Member`s Gallery
Posts: 5,665
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Check out this thread. Jared did a 4-link air bag rear and also air bagged the front.
http://www.competitiondiesel.com/for...d.php?t=121397
__________________
Leonard
79 VW rabbit diesel (ALH & 4motion )
04.5 rclb 4x4
01 & 03 VW Golf TDI
05 rcsb 2wd (in progress )
ROSKOE115: "It's ain't avatar material but I'd hit it!"
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12-28-2014, 09:00 AM
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#19
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Name: oldestof11
Title: Drag racer
Status: Not Here
Join Date: Jul 2007
Location: Dixon, IL
Member`s Gallery
Posts: 9,084
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Quote:
Originally Posted by winkdemon
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Link doesn't work on my phone. I'll try it in a bit with my laptop
Quote:
Originally Posted by SKYNYRD
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Thanks for the thread! I was just thinking of this one last night.
__________________
Jon
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12-28-2014, 09:42 AM
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#20
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Name: Howling
Title: Soot Sniffer
Status: Not Here
Join Date: Apr 2006
Location: Northern,IL
Member`s Gallery
Posts: 4,304
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This is the pdf file, I took a screen shot of it.
__________________
Eric
2006 Dodge CTD/48re 4x4 Sport
With some fuel and air.
Bullseye,Hamilton,Exergy,EFI,ATS,FASS,HTS,Thuren, Toyo's...
1996 2500 RC 4x4 CTD-63/68/.83,5X.014,180 maxed Ppump,Fass...
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