Sleeved Bag questions - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**slepysal** · 07-23-2013, 01:38 AM

I found some Firestone 9000 Sleeved Bags. my question is can I use them to replace my rear coil springs? Or do I need D2600 bags ?
As you can see not to up on the bags so any help is apreciated

**slepysal** · 07-24-2013, 01:11 AM

ttt

andrewmp6 · 07-24-2013, 02:28 AM

I was always told sleeved bags are good if you mount them to the axle,But on a link like the trailing arms you should use the normal air bag type.

SCOTI · 07-24-2013, 08:18 AM

Technically, they would still work in a leverage/Truck-arm install but they would have a softer spring rate. The install height wouldn't be as low because they require more height vs a similar sized dbl convoluted bag.

**robnolimit** · 07-24-2013, 11:50 AM

Scoti is correct, but this may be what you want. I like to use the 9000 bags, the softer effective spring rate rides and handles a bit better. Here is the load math. The 9000 series bag is rated at 1500 lbs @ 100 psi. Two bags = 3000 lbs. but they are leveraged appx 30%, so this nets 2100 lbs. The back end of the truck will weigh in close to 1500, but remember that about 450lbs is unsprung wt, leaving an estimated 1050lbs on the axle, so there is about 1000lb capacity left in the bags. - and thats still a 1/2 ton truck

**slepysal** · 07-24-2013, 12:12 PM

Thanks for the help. As I said I "found these" when cleaning my shed. They were for another project . I bought some rear trailing arm brackets so will see how it goes, worse case I'll get some diferent bags, Again thank to all for the help

07-23-2013, 01:38 AM	#1
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Sleeved Bag questions I found some Firestone 9000 Sleeved Bags. my question is can I use them to replace my rear coil springs? Or do I need D2600 bags ? As you can see not to up on the bags so any help is apreciated __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... "

07-24-2013, 01:11 AM	#2
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Re: Sleeved Bag questions ttt __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... "

07-24-2013, 02:28 AM	#3
andrewmp6 Registered User Join Date: Jan 2009 Location: Louisville,Ky Posts: 5,811	Re: Sleeved Bag questions I was always told sleeved bags are good if you mount them to the axle,But on a link like the trailing arms you should use the normal air bag type.

07-24-2013, 08:18 AM	#4
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 22,064	Re: Sleeved Bag questions Technically, they would still work in a leverage/Truck-arm install but they would have a softer spring rate. The install height wouldn't be as low because they require more height vs a similar sized dbl convoluted bag. __________________ 67SWB-B.B.RetroRod 64SWB-Recycle 89CCDually-Driver/Tow Truck 99CCSWB Driver All Fleetsides @rattlecankustoms in IG Building a small, high rpm engine with the perfect bore, stroke and rod ratio is very impressive. It's like a highly skilled Morrocan sword fighter with a Damascus Steel Scimitar..... *Cubic inches is like Indiana Jones with a cheap pistol.*

07-24-2013, 11:50 AM	#5
robnolimit Senior Member Join Date: Jul 2010 Location: Dandridge, Tn. USA Posts: 2,226	Re: Sleeved Bag questions Scoti is correct, but this may be what you want. I like to use the 9000 bags, the softer effective spring rate rides and handles a bit better. Here is the load math. The 9000 series bag is rated at 1500 lbs @ 100 psi. Two bags = 3000 lbs. but they are leveraged appx 30%, so this nets 2100 lbs. The back end of the truck will weigh in close to 1500, but remember that about 450lbs is unsprung wt, leaving an estimated 1050lbs on the axle, so there is about 1000lb capacity left in the bags. - and thats still a 1/2 ton truck __________________ GoodGuys 2012 Pro-Truck Champion 2012 Truckin' Throwdown Champion GoodGuys 2011 National Champion 2011 Truckin' Throwdown Champion GoodGuys 2010 National Champion Proud to put our products up against all others!

07-24-2013, 12:12 PM	#6
slepysal Registered User Join Date: Oct 2006 Location: San Jose NOR*CAL Posts: 3,080	Re: Sleeved Bag questions Thanks for the help. As I said I "found these" when cleaning my shed. They were for another project . I bought some rear trailing arm brackets so will see how it goes, worse case I'll get some diferent bags, Again thank to all for the help __________________ 1960 Apache long bed fleet L6 250 Clifford intake 2 bbl carb. Langdon cast headers with dual exhaust and bellflower tips. T-5 5 speed, power steering and power disc brakes. "Over, Around or through it... "

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