F9000 bags what is the "sweet spot"? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**LEEVON** · 09-12-2010, 05:21 PM

I'm getting ready to set up F9000 bags directly behind the axle. I understand the stroke is about 4-12". Does anybody have feedback on what the sweet spot / psi for these is?

mullit · 09-12-2010, 06:44 PM

every vechicial is diffrent, depending on the weight. on my S 10 i fill em then give em a crack or two down. there isnt a specific psi

**67cheby** · 09-14-2010, 11:27 AM

i am running the f9100 i believe it is the same bag with billet ends, according to air ride, the ride height should be 10-10.5 inches, never mind i just realized you were looking for psi and not height

LowSmoothCool · 09-15-2010, 10:20 AM

the f9000 should be driven at 9"-9.5" Pressure does not matter once you acquire the right height you can play with the pressure within 1-5psi by doing so you'll effect the spring rate with out effecting the height to much...

Tony@AirRideTech · 09-15-2010, 11:52 AM

Quote:

Originally Posted by LowSmoothCool

the f9000 should be driven at 9"-9.5" Pressure does not matter once you acquire the right height you can play with the pressure within 1-5psi by doing so you'll effect the spring rate with out effecting the height to much...

Yeah... what he said........

**67cheby** · 09-15-2010, 11:54 AM

i have set my f9100 up to run 10-10.5 is that going to ride right or not

**LEEVON** · 09-15-2010, 12:10 PM

Well there we have it from the Pros themselves, time to get out the welder. Thanks guys!

Just for grins, here is a pic of what I'm working on; '50 chevy pickup with trailing arms. I'm now thinking about bringing the arms inboard a couple of inches and mounting the bags in the original spring location.

SCOTI · 09-15-2010, 01:54 PM

^^ That x-member looks like it was a good fit & the truck arms look like they're supposed to be there! Nice install.

**LEEVON** · 09-15-2010, 02:54 PM

Thanks SCOTI. I was originally talking with Nathan Porter about developing a trailing arm kit for these trucks but my lack of focus got that off track (sorry Nathan

).

I put an ad on CL looking for the parts and found a guy who had started doing this conversion in a '37 pickup. He had already made a crossmember which I cannibalized. I bought the whole back half of the '72 plus his crossmember and new saddles, u-bolts, bushings and bolts for $50. Cut the ends off and tapered them in a bit (the '50 frame is about a 1/2" shorter) then welded thick-wall channels to the ends and slipped them into the frame. It's bolted into the frame for easy removal. Besides the bags and shocks my last issue is the driveshaft, think I'm going to have to clearance that factory member behind the trailing arm one.

Cheap and easy, just how I like 'em!

Tony@AirRideTech · 09-15-2010, 03:29 PM

Quote:

Originally Posted by 67cheby

i have set my f9100 up to run 10-10.5 is that going to ride right or not

Money

Tony@AirRideTech · 09-15-2010, 03:33 PM

Quote:

Originally Posted by LEEVON

Well there we have it from the Pros themselves, time to get out the welder. Thanks guys!

Just for grins, here is a pic of what I'm working on; '50 chevy pickup with trailing arms. I'm now thinking about bringing the arms inboard a couple of inches and mounting the bags in the original spring location.

Wow... that looks like it was meant to be there......!

**LEEVON** · 09-15-2010, 03:37 PM

Oh I forgot, there's a rear sway bar to fit in there somehow too...

**robnolimit** · 09-16-2010, 03:28 PM

Bag selection can make a big difference. I try tochoose a bag, based on its load capacity so that it runs at 70 to 90 psi at ride hieght. 70 to 90% of spec capacity/load rate. This has proven to give the best ride and handling. At these pressures, the bag need to be mounted so that it is at 50% to 60% of its available travel. Look at RideTech's web site for bag specs.

09-12-2010, 05:21 PM	#1
LEEVON Registered User Join Date: Jul 2006 Location: Ozark, MO Posts: 4,887	F9000 bags what is the "sweet spot"? I'm getting ready to set up F9000 bags directly behind the axle. I understand the stroke is about 4-12". Does anybody have feedback on what the sweet spot / psi for these is? __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids

09-12-2010, 06:44 PM	#2
mullit Registered User Join Date: Jan 2007 Location: connecticut Posts: 127	Re: F9000 bags what is the "sweet spot"? every vechicial is diffrent, depending on the weight. on my S 10 i fill em then give em a crack or two down. there isnt a specific psi

09-14-2010, 11:27 AM	#3
67cheby 67cheby Join Date: Sep 2008 Location: siloam springs ar 72761 Posts: 17,890	Re: F9000 bags what is the "sweet spot"? i am running the f9100 i believe it is the same bag with billet ends, according to air ride, the ride height should be 10-10.5 inches, never mind i just realized you were looking for psi and not height __________________ Check out Slosh Tubz, bolt-in inner fenders for frame laying C-10's Slosh Tubz Introductory Price $559 67 Cheby's Dropmember Build Thread Slosh Tubz on Facebook http://67-72chevytrucks.com/vboard/s...d.php?t=554172 Last edited by 67cheby; 09-14-2010 at 11:27 AM.

09-15-2010, 10:20 AM	#4
LowSmoothCool Jon@AirRideTech Join Date: Aug 2008 Location: Jasper Indiana Posts: 101	Re: F9000 bags what is the "sweet spot"? the f9000 should be driven at 9"-9.5" Pressure does not matter once you acquire the right height you can play with the pressure within 1-5psi by doing so you'll effect the spring rate with out effecting the height to much... __________________ Selling The best Damn Air Suspension www.ridetech.com jon@ridetech.com (812) 482-2932 Last edited by LowSmoothCool; 09-15-2010 at 10:21 AM.

09-15-2010, 11:54 AM	#6
67cheby 67cheby Join Date: Sep 2008 Location: siloam springs ar 72761 Posts: 17,890	Re: F9000 bags what is the "sweet spot"? i have set my f9100 up to run 10-10.5 is that going to ride right or not __________________ Check out Slosh Tubz, bolt-in inner fenders for frame laying C-10's Slosh Tubz Introductory Price $559 67 Cheby's Dropmember Build Thread Slosh Tubz on Facebook http://67-72chevytrucks.com/vboard/s...d.php?t=554172

09-15-2010, 12:10 PM	#7
LEEVON Registered User Join Date: Jul 2006 Location: Ozark, MO Posts: 4,887	Re: F9000 bags what is the "sweet spot"? Well there we have it from the Pros themselves, time to get out the welder. Thanks guys! Just for grins, here is a pic of what I'm working on; '50 chevy pickup with trailing arms. I'm now thinking about bringing the arms inboard a couple of inches and mounting the bags in the original spring location. __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 09-15-2010 at 12:17 PM.

09-15-2010, 01:54 PM	#8
SCOTI Registered User Join Date: Apr 2001 Location: DALLAS,TX Posts: 21,949	Re: F9000 bags what is the "sweet spot"? ^^ That x-member looks like it was a good fit & the truck arms look like they're supposed to be there! Nice install. __________________ 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.*

09-15-2010, 02:54 PM	#9
LEEVON Registered User Join Date: Jul 2006 Location: Ozark, MO Posts: 4,887	Re: F9000 bags what is the "sweet spot"? Thanks SCOTI. I was originally talking with Nathan Porter about developing a trailing arm kit for these trucks but my lack of focus got that off track (sorry Nathan ). I put an ad on CL looking for the parts and found a guy who had started doing this conversion in a '37 pickup. He had already made a crossmember which I cannibalized. I bought the whole back half of the '72 plus his crossmember and new saddles, u-bolts, bushings and bolts for $50. Cut the ends off and tapered them in a bit (the '50 frame is about a 1/2" shorter) then welded thick-wall channels to the ends and slipped them into the frame. It's bolted into the frame for easy removal. Besides the bags and shocks my last issue is the driveshaft, think I'm going to have to clearance that factory member behind the trailing arm one. Cheap and easy, just how I like 'em! __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 09-15-2010 at 02:54 PM.

09-15-2010, 03:37 PM	#12
LEEVON Registered User Join Date: Jul 2006 Location: Ozark, MO Posts: 4,887	Re: F9000 bags what is the "sweet spot"? Oh I forgot, there's a rear sway bar to fit in there somehow too... __________________ '20 Silverado Trail Boss ~ '17 Tahoe ~ '79 K15 Sierra Grande ~ '76 Blazer 2wd ~ '71 Cheyenne swb ~ '55 Pontiac Safari ~'50 3100 bagged ~ '80 Wife ~ Late model kids Last edited by LEEVON; 09-15-2010 at 03:38 PM.

09-16-2010, 03:28 PM	#13
robnolimit Senior Member Join Date: Jul 2010 Location: Dandridge, Tn. USA Posts: 2,226	Re: F9000 bags what is the "sweet spot"? Bag selection can make a big difference. I try tochoose a bag, based on its load capacity so that it runs at 70 to 90 psi at ride hieght. 70 to 90% of spec capacity/load rate. This has proven to give the best ride and handling. At these pressures, the bag need to be mounted so that it is at 50% to 60% of its available travel. Look at RideTech's web site for bag specs.



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.