| Firestone standoff angle - why? [message #355519] |
Tue, 09 June 2020 14:46  |
LarryInSanDiego
Messages: 336
Registered: September 2006
Karma: 0
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Senior Member |
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Hello all. Getting ready to cut standoffs for the Firestone 9294 airbags. Looking at the spec sheet and specs of what others have posted, I'm trying to figure out why the airbag plates shouldn't be parallel at normal ride height: ~13.5" from suspension airbag mount point to point. Is it due to some weird angle possible during extreme suspension movements? It would make sense to me that somebody had something considered, I just haven't read about why if that's the case. Can somebody knowledgeable about that chime in? Thank you in advance.
Larry Engelbrecht
C: 858- tree fo non -6472
larryengelbrecht at gee mail dot com
Larry Engelbrecht
San Diego, CA
'73 26' ex-Glacier
TZE063V100319 03/07/73
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| Re: [GMCnet] Firestone standoff angle - why? [message #355525 is a reply to message #355519] |
Tue, 09 June 2020 17:03  |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Larry,
When at ride height the mounting surfaces for the airbag are not parallel.
As the suspension moves the angle changes even more as the rear of the
coach moves upward. The height and angle of the mounts need to be adjusted
for optimal bag alignment on the cone or at least a best case scenario
throughout usual bogie arm rotation.
Sully
Bellevue wa.
On Tue, Jun 9, 2020 at 12:46 PM Larry Engelbrecht via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Hello all. Getting ready to cut standoffs for the Firestone 9294 airbags.
> Looking at the spec sheet and specs of what others have posted, I'm trying
> to figure out why the airbag plates shouldn't be parallel at normal ride
> height: ~13.5" from suspension airbag mount point to point. Is it due to
> some
> weird angle possible during extreme suspension movements? It would make
> sense to me that somebody had something considered, I just haven't read
> about
> why if that's the case. Can somebody knowledgeable about that chime in?
> Thank you in advance.
>
> Larry Engelbrecht
> C: 858- tree fo non -6472
> larryengelbrecht at gee mail dot com
> --
> Larry Engelbrecht
>
> San Diego, CA
>
> '73 26' ex-Glacier
>
> TZE063V100319 03/07/73
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Firestone standoff angle - why? [message #355526 is a reply to message #355525] |
Tue, 09 June 2020 17:55 |
LarryInSanDiego
Messages: 336
Registered: September 2006
Karma: 0
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Senior Member |
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Thank you very much for responding, Todd. I presently have 13 1/2" long 4x4s temporarily holding up the coach. I need to verify ride height and verify the angle you describe when I take a closer look. At a glance, they appeared to be parallel, but you're likely very correct. I thought it might have something to do with weird angles causing internal interference or bag tearing issues at the extremes of travels.
Much appreciated.
Larry Engelbrecht
Larry Engelbrecht
San Diego, CA
'73 26' ex-Glacier
TZE063V100319 03/07/73
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| Re: [GMCnet] Firestone standoff angle - why? [message #355529 is a reply to message #355526] |
Tue, 09 June 2020 20:23 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Larry,
You need to follow the specs for rear height. your either too high or to
low.
When the height is correct the plates will be parallel, the way it was
designed..
On Tue, Jun 9, 2020 at 3:55 PM Larry Engelbrecht via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Thank you very much for responding, Todd. I presently have 13 1/2" long
> 4x4s temporarily holding up the coach. I need to verify ride height and
> verify
> the angle you describe when I take a closer look. At a glance, they
> appeared to be parallel, but you're likely very correct. I thought it might
> have
> something to do with weird angles causing internal interference or bag
> tearing issues at the extremes of travels.
>
> Much appreciated.
>
> Larry Engelbrecht
> --
> Larry Engelbrecht
>
> San Diego, CA
>
> '73 26' ex-Glacier
>
> TZE063V100319 03/07/73
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.gmcrvparts.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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