| airbags [message #142896] |
Fri, 09 September 2011 15:01  |
skip2
Messages: 544
Registered: September 2011
Location: Winter Haven,FL (center o...
Karma: 3
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Senior Member |
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Any input on any particular quad bag upgrade
one actually says you can drive with a flat tire or one blown bag
74 Canyon Lands, FiTech,
3.7 FD LSD, Manny Tranny,
Springfield Distributor,
2001 Chevy Tracker Ragtop Towd
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| Re: airbags [message #142904 is a reply to message #142896] |
Fri, 09 September 2011 20:06  |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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I don't own one, but I hope to.
It's the best replacement bag system out there IMHO
And yes you can drive a short distance at low speeds with one tire off the ground
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] airbags [message #142918 is a reply to message #142896] |
Fri, 09 September 2011 22:12 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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OPERATING A GMC ON LESS THAN FOUR REAR WHEELS/TIRES
REFERENCE: GMC Motorhome Operating Manual X-7821A Page 1 - IMPORTANT INFORMATION ON VEHICLE LOADING.
http://www.bdub.net/manuals/ops78/index.html
GVWR (Gross Vehicle Weight Rating) represents the maximum permissible loaded weight of the vehicle.
26 foot GMC GVWR = 12,500 lbs
GAWR (Gross Axle Weight Rating) the maximum weight that the axle can carry.
26 foot GMC GAWR
GAWR = 4,500 lbs Front Wheels
GAWR = 8,000 lbs Rear Wheels
REFERENCE: Tire Load Range: http://gmcmotorhome.info/tires.html
Tire Load Range: The max load a tire can carry and the pressure required to carry that load.
D load range max load @ 65 PSI = 2,235 pounds
E load range tire max load @ 80 psi = 2,680 pounds
REFERENCE: Alcoa Light Truck, SUV, RV and Motorhome Wheels Fitment Guide
http://www.southwestwheel.com/pictures5/LTFitment-Screen_10-18-01.pdf
P/N: 160231
Style: Classic
Max Wheel Load Pounds: 2780
Capacity ratings as dual or single in highway service - bias-ply or radial
P/N: 160251
Style: LTS 5
Max Wheel Load Pounds: 2440
Capacity ratings as dual or single in highway service - bias-ply or radial
P/N: 161251
Style: Hot Shot
Max Wheel Load Pounds: 2780
Capacity ratings as dual or single in highway service - bias-ply or radial
COMMENTS:
The weight distribution per tire would be dependant on the how much pressure was supplied to the air bag supporting the remaining
tire. For ease of calculations we'll divide the rear GAWR of 8,000 lbs as noted above by four which results in a load per tire of
2,000 lbs. Operating the GMC with one wheel removed the load on the remaining tire would double; going from 2,000 to 4,000 lbs. This
is an overload of 1,765 pounds (~79%) on a D range tire at the maximum pressure of 65 psi and an overload of 1320 pounds (~49%) on
an E load range tire at the maximum pressure of 80 psi. If the tires are not inflated to the pressures noted in the previous
sentence the overload would be even higher.
CONCLUSION:
If you drive your GMC with less than four rear tires supporting the load you WILL be operating the GMC with OVERLOADED TIRE(S) and
OVERLOADED WHEELS!
Regards,
Rob M.
-----Original Message-----
From: Skip Hartline
Any input on any particular quad bag upgrade one actually says you can drive with a flat tire or one blown bag
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: airbags [message #142925 is a reply to message #142896] |
Sat, 10 September 2011 00:15 |
armandminnie
Messages: 864
Registered: May 2009
Location: Marana, AZ
Karma: 2
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Senior Member |
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I have the quad-bag installed. I think that the capability of holding the coach up with only one wheel is just so your rear end on the failing side will not come crashing to the ground. It is not so that you will drive any distance with it in that condition.
Armand Minnie
Marana, AZ
'76 Eleganza II TZE166V103202
visit my gmc blog
click here to visit gmcws.org
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| Re: [GMCnet] airbags [message #143004 is a reply to message #142918] |
Sun, 11 September 2011 12:24 |
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Thank you, Rob, for the dose or reality.
Who ever started the dirty rumor and mis-leading sales pitch that "you can
drive it on three wheels" (or whatever) did a dis-service to the GMC
community. This isn't a feature of any suspension system unless you enjoy
"living on the edge". Of course, if a guy making the pitch wants to
subject himself to the likes of litigation-happy "friends" he is welcome
to do so. If you don't mind driving three miles down the road at 15 mph,
rather than calling a service truck, then you're exercising your own right
to solving a problem. However, don't blame someone else for any
self-inflicted wound that may result in the event you decide to go just a
bit further at a faster pace.
By the way, does anyone have a fix for driving to an exit when a front
tire goes?
Byron Songer
Louisville, KY
Eastern States - http://www.gmceast.com
-----Original Message-----
From: Rob Mueller <robmueller@iinet.net.au>
Reply-To: <gmclist@temp.gmcnet.org>
Date: Sat, 10 Sep 2011 13:12:43 +1000
To: <gmclist@temp.gmcnet.org>
Subject: Re: [GMCnet] airbags
>
>OPERATING A GMC ON LESS THAN FOUR REAR WHEELS/TIRES
>
>REFERENCE: GMC Motorhome Operating Manual X-7821A Page 1 - IMPORTANT
>INFORMATION ON VEHICLE LOADING.
>
>http://www.bdub.net/manuals/ops78/index.html
>
>GVWR (Gross Vehicle Weight Rating) represents the maximum permissible
>loaded weight of the vehicle.
>
>26 foot GMC GVWR = 12,500 lbs
>
>GAWR (Gross Axle Weight Rating) the maximum weight that the axle can
>carry.
>
>26 foot GMC GAWR
>
>GAWR = 4,500 lbs Front Wheels
>GAWR = 8,000 lbs Rear Wheels
>
>REFERENCE: Tire Load Range: http://gmcmotorhome.info/tires.html
>
>Tire Load Range: The max load a tire can carry and the pressure required
>to carry that load.
>
>D load range max load @ 65 PSI = 2,235 pounds
>
>E load range tire max load @ 80 psi = 2,680 pounds
>
>REFERENCE: Alcoa Light Truck, SUV, RV and Motorhome Wheels Fitment Guide
>
>http://www.southwestwheel.com/pictures5/LTFitment-Screen_10-18-01.pdf
>
>P/N: 160231
>Style: Classic
>Max Wheel Load Pounds: 2780
>Capacity ratings as dual or single in highway service - bias-ply or radial
>
>P/N: 160251
>Style: LTS 5
>Max Wheel Load Pounds: 2440
>Capacity ratings as dual or single in highway service - bias-ply or radial
>
>P/N: 161251
>Style: Hot Shot
>Max Wheel Load Pounds: 2780
>Capacity ratings as dual or single in highway service - bias-ply or radial
>
>COMMENTS:
>
>The weight distribution per tire would be dependant on the how much
>pressure was supplied to the air bag supporting the remaining
>tire. For ease of calculations we'll divide the rear GAWR of 8,000 lbs as
>noted above by four which results in a load per tire of
>2,000 lbs. Operating the GMC with one wheel removed the load on the
>remaining tire would double; going from 2,000 to 4,000 lbs. This
>is an overload of 1,765 pounds (~79%) on a D range tire at the maximum
>pressure of 65 psi and an overload of 1320 pounds (~49%) on
>an E load range tire at the maximum pressure of 80 psi. If the tires are
>not inflated to the pressures noted in the previous
>sentence the overload would be even higher.
>
>CONCLUSION:
>
>If you drive your GMC with less than four rear tires supporting the load
>you WILL be operating the GMC with OVERLOADED TIRE(S) and
>OVERLOADED WHEELS!
>
>Regards,
>Rob M.
>
>-----Original Message-----
>From: Skip Hartline
>
>Any input on any particular quad bag upgrade one actually says you can
>drive with a flat tire or one blown bag
>
>_______________________________________________
>GMCnet mailing list
>Unsubscribe or Change List Options:
>http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
--
Byron Songer
Full-timing to enjoy the USA
Former owner but still an admirer
GMC paint schemes at -
http://www.songerconsulting.net
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