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| Body Pads [message #114503] |
Mon, 07 February 2011 20:43  |
thorndike
Messages: 406
Registered: January 2011
Location: Conifer, Colorado
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Sorry about the duplicate topic!
Howdy folks,
Now that I am home, I am catching up on all the work I have to do and have neglected working on the GMC. Soon enough I will make a list of the things I have to do and ask for advice on the order of importance. I know you can hardly wait to give me your.02!
I have a question about body pads. When I was with Blaine in Indiana, he said that one of the first things I should do would be to replace the body pads. He went through the process quickly, so I understand the gist of the task. I will look for more detailed info when I get ready to do it.
My question concerns the pads themselves. I understand that the pads keep the dissimilar metals separate and provide a way to mount the body to the frame. Do they provide any other service? The pads I have now are crushed, so in a perfect world, the pads would be uncrushable, weatherproof while providing a surface that won't react to the steel or aluminum. With that in mind, wouldn't hockey pucks make terrific pads? I believe the pressure used to create them is far greater than the weight of the coach, so they shouldn't crush, they are rubber so they should provide the perfect insulation between the metals.
Any thoughts?
Bob
Robert Peesel
1976 Royale 26'
Side Dry Bath
Conifer, Colorado
[Updated on: Mon, 07 February 2011 20:50] Report message to a moderator |
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| Re: Body Pads [message #114507 is a reply to message #114506] |
Mon, 07 February 2011 20:51  |
thorndike
Messages: 406
Registered: January 2011
Location: Conifer, Colorado
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But wood will deteriorate over time. Even if you used Lignum Vitae or some other hard wood.
Robert Peesel
1976 Royale 26'
Side Dry Bath
Conifer, Colorado
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| Re: Body Pads [message #114513 is a reply to message #114503] |
Mon, 07 February 2011 21:03 |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
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I would simply use the available rubber mounts. In addition to the spacing they provide, they also add additional springing and damping between the body and frame.
When they are crushed, the space needed for running air lines and other components is missing as well.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: [GMCnet] Body Pads [message #114518 is a reply to message #114503] |
Mon, 07 February 2011 21:58 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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On Feb 7, 2011, at 7:43 PM, Robert Peesel wrote:
>
>
> Howdy folks,
>
> Now that I am home, I am catching up on all the work I have to do and have neglected working on the GMC. Soon enough I will make a list of the things I have to do and ask for advice on the order of importance. I know you can hardly wait to give me your.02!
>
> I have a question about body pads. When I was with Blaine in Indiana, he said that one of the first things I should do would be to replace the body pads. He went through the process quickly, so I understand the gist of the task. I will look for more detailed info when I get ready to do it.
>
> My question concerns the pads themselves. I understand that the pads keep the dissimilar metals separate and provide a way to mount the body to the frame. Do they provide any other service? The pads I have now are crushed, so in a perfect world, the pads would be uncrushable, weatherproof while providing a surface that won't react to the steel or aluminum. With that in mind, wouldn't hockey pucks make terrific pads? I believe the pressure used to create them is far greater than the weight of the coach, so they shouldn't crush, they are rubber so they should provide the perfect insulation between the metals.
>
> Any thoughts?
>
> Bob
It really isn't insulation, the main purpose is to provide vibration dampening. So you definitely don't want something as hard as a hockey puck. It has to be fairly rigid but not hard. Somewhere in my files I have info on the durometer hardness required but I'd have to did it out. The easiest thing for you to do is to order them from a GMC supplier. I know that the Curtises have them. I believe that Jim Kanomata also does.
Emery Stora
77 Kingsley
Santa Fe, NM
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| Re: [GMCnet] Body Pads [message #114871 is a reply to message #114518] |
Sun, 13 February 2011 14:28 |
thorndike
Messages: 406
Registered: January 2011
Location: Conifer, Colorado
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Emery,
How was your trip west? I am really sorry we couldn't meet up before I picked up the coach. I am quite sure you would have pointed out a lot of things prior to my accepting delivery! Oh well, live and learn!
Bob
Robert Peesel
1976 Royale 26'
Side Dry Bath
Conifer, Colorado
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| Re: [GMCnet] Body Pads [message #114926 is a reply to message #114503] |
Mon, 14 February 2011 06:30 |
Steven Ferguson
Messages: 3447
Registered: May 2006
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The correct usage is Isolation pads and the name describes their function.
On Mon, Feb 7, 2011 at 7:43 PM, Robert Peesel <thorndike@pldsllc.com> wrote:
>
>
>
> My question concerns the pads themselves. I understand that the pads keep
> the dissimilar metals separate and provide a way to mount the body to the
> frame. Do they provide any other service? The pads I have now are crushed,
> so in a perfect world, the pads would be uncrushable, weatherproof while
> providing a surface that won't react to the steel or aluminum. With that in
> mind, wouldn't hockey pucks make terrific pads? I believe the pressure used
> to create them is far greater than the weight of the coach, so they
> shouldn't crush, they are rubber so they should provide the perfect
> insulation between the metals.
>
> Any thoughts?
>
> Bob
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Steve Ferguson
Sierra Vista, AZ
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| Re: [GMCnet] Body Pads [message #115262 is a reply to message #114926] |
Wed, 16 February 2011 16:46 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Steve,
To prove I am even more pedantic than you are the correct nomenclature
according to GMC is "Insulator." ;-)
Ref Maintenance Manual X-7525 page 2-4
Ref: Parts Book 78Z page 23-76 Key 1 & 2
Actually I didn't raise this point to bust your chops, I was wondering about
Key 3 - Support - crossmember to floor.
I don't remember seeing these in either The Blue Streak or Double Trouble,
which are both Avions and started life as Transmodes.
Has anyone seen them in GMC's?
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Steven Ferguson
Sent: Monday, February 14, 2011 11:31 PM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Body Pads
The correct usage is Isolation pads and the name describes their function.
Steve Ferguson
Sierra Vista, AZ
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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: [GMCnet] Body Pads [message #115272 is a reply to message #115271] |
Wed, 16 February 2011 19:37 |
Dennis S
Messages: 3046
Registered: November 2005
Karma: 2
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Rob,
I found a picture that shows the crossmember to floor pads -- on my 23 ft 73. Look just to the top of the crossmember.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=31249&title=0082&cat=4620
Dennis
| Dennis S wrote on Wed, 16 February 2011 19:32 |
Rob,
Yes, I have seen those crossmember to floor pads on 1973 GMC's. Perhaps they changed in the later years when they went to less length on the pads.
Dennis
| Robert Mueller wrote on Wed, 16 February 2011 16:46 |
Steve,
To prove I am even more pedantic than you are the correct nomenclature
according to GMC is "Insulator." 
Ref Maintenance Manual X-7525 page 2-4
Ref: Parts Book 78Z page 23-76 Key 1 & 2
Actually I didn't raise this point to bust your chops, I was wondering about
Key 3 - Support - crossmember to floor.
I don't remember seeing these in either The Blue Streak or Double Trouble,
which are both Avions and started life as Transmodes.
Has anyone seen them in GMC's?
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
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Dennis S
73 Painted Desert 230
Memphis TN Metro
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| Re: [GMCnet] Body Pads [message #115413 is a reply to message #115409] |
Thu, 17 February 2011 19:03 |
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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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Steve,
Thanks! I assume this is a picture of Smurfie.
It appears that the coaches that do not have the foam / aluminum under the
plywood have the pads. Which I believe are 73 & 74 models. The GMC factory
build date of my two Avions is 11/74 and they both have the foam / aluminum
under the plywood and no cross member pads.
That air line must have been under there from day 1!
Regards,
Rob M.
USAussie - Downunder
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Steve Southworth
Sent: Friday, February 18, 2011 11:58 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Body Pads
This picture may show, more clearly, the cross member pad.
http://www.gmcmhphotos.com/photos/showphoto.php?photo=24749
These pads also run the full length of the main frames.
--
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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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: [GMCnet] Body Pads [message #115419 is a reply to message #115413] |
Thu, 17 February 2011 19:38 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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| Robert Mueller wrote on Thu, 17 February 2011 19:03 |
Steve,
Thanks! I assume this is a picture of Smurfie.
It appears that the coaches that do not have the foam / aluminum under the
plywood have the pads. Which I believe are 73 & 74 models. The GMC factory
build date of my two Avions is 11/74 and they both have the foam / aluminum
under the plywood and no cross member pads.
That air line must have been under there from day 1!
Regards,
Rob M.
|
Yes - that is the '74 Glacier. I have since pulled this pad out to install a brake line and inspect the air line. This is the double cross-member between the boogies. There is a pad on top of each cross-member. The air line showed no damage or distortion. The pad has since been reinstalled with the air line in the proper position.
The '75 transmode has the underfloor insulation with aluminum shielding. It also has full length body pads just like the '74.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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