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[GMCnet] Door widening project. [message #198330]

Wed, 13 February 2013 11:21

BobDunahugh

Messages: 2465
Registered: October 2010
Location: Cedar Rapids, IA

Karma: 11

Senior Member

I'm going to be taking photos as I go. Others may need to do this some time also. Getting over the fear has been the hardest so far. It looks like I could use some of the outside body material. Bob Dunahugh
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Re: [GMCnet] Door widening project. [message #198340 is a reply to message #198330]

Wed, 13 February 2013 13:19

sgltrac

Messages: 2797
Registered: April 2011

Karma: 1

Senior Member

I haven't read this whole thread so I apologize if I'm rehashing issues that have already been covered. I have a couple of suggestions that you can do with what you will.
1 make sure you have ALL of the materials you will need before you start especially if you need salvaged original parts. removing the parts yourself will offer you risk free insight on how you will dissect your coach. Better to learn on the donor. If the skin is still well bonded to the ribs it may stretch when separated.

2 make sure you have a welder lined up who can properly reposition and weld any relocated bracing. The aluminum will require a 240v 50 amp supply minimum or gas driven welder to run a spool machine or tig

3 support the body of the coach evenly and level to prevent the opening from distorting when the vertical braces are removed and mark several measurement points on the floor and ceiling to allow proper positioning of the relocated bracing in regards to distance from center line or width.

J.w.i.w.d.

Sully
77 royale
Seattle

Sent from my iPhone

On Feb 13, 2013, at 9:21 AM, Bob Dunahugh <yenko108@hotmail.com> wrote:

>
> I'm going to be taking photos as I go. Others may need to do this some time also. Getting over the fear has been the hardest so far. It looks like I could use some of the outside body material. Bob Dunahugh
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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] Door widening project. [message #198343 is a reply to message #198340]

Wed, 13 February 2013 14:51

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

G'day,

I'd like to add a couple too:

4) The epoxy bond between the skin and frame can be separated without causing deformation to the skin or frame using one of these:

http://www.harborfreight.com/multifunction-power-tool-single-speed-oscillating-16-amp-68861.html

Here's a selection of the blades:

http://www.harborfreight.com/catalogsearch/result?q=Multi-tool+blade

The blade below is the one I used recently to remove a longeron in the ceiling of the bathroom to replace the small circular fan
with a Fantastic Fan.

http://www.harborfreight.com/1-18-bi-metal-multi-tool-plunge-blade-68912.html

Unfortunately I cannot attest to the quality of this particular SKU number as the blade I have here is the "old style" which has
holes not slots.

5) It has been reported here many times that the spray foam insulation is HIGHLY flammable. Before you begin welding the new parts
in it is necessary to remove the insulation in a radius far enough away so it doesn't catch fire. I have NO IDEA how large that
radius should be, perhaps someone with experience welding the frame can provide that.

Regards,
Rob M.
Sydney, Australia
AUS '75�Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
�

-----Original Message-----
From: Todd Sullivan

I haven't read this whole thread so I apologize if I'm rehashing issues that have already been covered. I have a couple of
suggestions that you can do with what you will.
1 make sure you have ALL of the materials you will need before you start especially if you need salvaged original parts. removing
the parts yourself will offer you risk free insight on how you will dissect your coach. Better to learn on the donor. If the skin is
still well bonded to the ribs it may stretch when separated.

2 make sure you have a welder lined up who can properly reposition and weld any relocated bracing. The aluminum will require a 240v
50 amp supply minimum or gas driven welder to run a spool machine or tig

3 support the body of the coach evenly and level to prevent the opening from distorting when the vertical braces are removed and
mark several measurement points on the floor and ceiling to allow proper positioning of the relocated bracing in regards to distance
from center line or width.

Sully

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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] Door widening project. [message #198391 is a reply to message #198340]

Wed, 13 February 2013 20:42

Ken Henderson

Messages: 8726
Registered: March 2004
Location: Americus, GA

Karma: 9

Senior Member

Bob,

I feel compelled to add one, probably unnecessary, precaution based on the
experience of one of our old-time Dixielanders: Make ABSOLUTELY sure no
welding heat can reach the sprayed-on urethane insulation. It is EXTREMELY
flammable. One spark on the old-timer's exposed urethane in the gutted 23'
he was about to restore (it certainly would have been a marvel based on his
two earlier restorations) caused it to burn to the ground: a molten heap
of aluminum on the steel frame. Sorry, no photos.

Just sayin'...

Ken H.

On Wed, Feb 13, 2013 at 2:19 PM, Todd Sullivan wrote:

> I haven't read this whole thread so I apologize if I'm rehashing issues
> that have already been covered. I have a couple of suggestions that you can
> do with what you will.
>
...
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach

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