Floor not level

S

shane grass

New member
Oct 11, 2017
5
0
0
Has anyone experienced a slight crown on their plywood floor and, if so, how did you attempt to correct it? I just pulled the vinyl sticky tiles off the floor and noticed maybe a 1/2 in difference in height between the plywood floor at the entrance and the middle of the RV (then I could tell from looking straight on that it curves back down under the stove on the driver side).

Never really noticed it so much until I pulled the aluminum transition strips that are screwed down at the entrance and hallway.

I did a little research online and found some people applied DAP flexible floor leveling, but that doesn’t address any possible problem... I’m thinking a water leak in the past might have caused the plywood to swell, but I’m not certain. My main concern is that the bowing is directly above one of the fuel tanks. No issues with fuel delivery to the engine.

Thanks for any advice!

Shane
‘76 Royale
Ocala FL
 
Shane,

I think you're going to find that the bowing of the floor is a common GMCMH
problem which most of us either don't notice or choose to ignore. If you
study the construction of the body, you'll find that the basic body
structure is a cage of vertical "hoops" (really inverted "U"s) anchored
(welded) together with three horizontal longitudinal members on each side.
That cage is overlaid, and tremendously strengthened, by the aluminum and
SMC (Sheet Molded Composite) sheets bonded to it.

That basic body rests on lateral aluminum "floor joists" which are welded
to the lower of those longitudinal members on each side. Those "floor
joists" are then supported a few inches (12 or so?), toward the middle of
the coach, by the steel chassis, which is eventually bearing the entire
weight of the body. Since that entire "cage" and all the cabinets, wall
finishes, etc., are thus cantilevered from the chassis with those aluminum
floor joists, they eventually sag -- and the plywood floor follows.

Thus the only way to correct that bowing is to straighten, and, probably,
reinforce, those floor joists. Worth it, unless you're doing a complete
frame-off restoration? Probably not, IMHO.

HTH,

Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL,
Manny Brakes & 1-Ton, Troy-Bilt APU, etc., etc., etc.
www.gmcwipersetc.com

> Has anyone experienced a slight crown on their plywood floor and, if so,
> how did you attempt to correct it? I just pulled the vinyl sticky tiles
> off the floor and noticed maybe a 1/2 in difference in height between the
> plywood floor at the entrance and the middle of the RV (then I could tell
> from looking straight on that it curves back down under the stove on the
> driver side).
>
> Never really noticed it so much until I pulled the aluminum transition
> strips that are screwed down at the entrance and hallway.
>
> I did a little research online and found some people applied DAP flexible
> floor leveling, but that doesn’t address any possible problem... I’m
> thinking a water leak in the past might have caused the plywood to swell,
> but I’m not certain. My main concern is that the bowing is directly above
> one of the fuel tanks. No issues with fuel delivery to the engine.
>
> Thanks for any advice!
>
> Shane
> ‘76 Royale
> Ocala FL
>
 
> Shane,
>
> I think you're going to find that the bowing of the floor is a common GMCMH problem which most of us either don't notice or choose to ignore. If
> you study the construction of the body, you'll find that the basic body structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> (welded) together with three horizontal longitudinal members on each side. That cage is overlaid, and tremendously strengthened, by the aluminum
> and SMC (Sheet Molded Composite) sheets bonded to it.
>
> That basic body rests on lateral aluminum "floor joists" which are welded to the lower of those longitudinal members on each side. Those "floor
> joists" are then supported a few inches (12 or so?), toward the middle of the coach, by the steel chassis, which is eventually bearing the entire
> weight of the body. Since that entire "cage" and all the cabinets, wall finishes, etc., are thus cantilevered from the chassis with those
> aluminum floor joists, they eventually sag -- and the plywood floor follows.
>
> Thus the only way to correct that bowing is to straighten, and, probably, reinforce, those floor joists. Worth it, unless you're doing a
> complete
> frame-off restoration? Probably not, IMHO.
>
> HTH,
>
> Ken H.

There may be times that I do not completely agree with Ken (either one) but this is not one of those times.

the floor sag is (I think) more pronounced in my 73 as they had a thinner floor, so I studied the issue at some length and came to that very same
conclusion. The impediment to a repair is that there is no depth of the frame channel to work with, so there is no place to put a diagonal brace to
the cage frame edge.

I even went so far as to analyze and model what could be done. If you are willing to give 2" of ground clearance for a few new thwartships members,
it could make a difference. My coach drags enough as it is, thank you.

Matt
--
Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan
OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Twixt A2 and Detroit
 
And I thought about storing a ramp, like a Uhaul truck, under the coach so
I push my wife up into the coach. If dragging is a problem then a ramp or a
chairlift is out of the question.

> > Shane,
> >
> > I think you're going to find that the bowing of the floor is a common
> GMCMH problem which most of us either don't notice or choose to ignore. If
> > you study the construction of the body, you'll find that the basic body
> structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > (welded) together with three horizontal longitudinal members on each
> side. That cage is overlaid, and tremendously strengthened, by the aluminum
> > and SMC (Sheet Molded Composite) sheets bonded to it.
> >
> > That basic body rests on lateral aluminum "floor joists" which are
> welded to the lower of those longitudinal members on each side. Those
> "floor
> > joists" are then supported a few inches (12 or so?), toward the middle
> of the coach, by the steel chassis, which is eventually bearing the entire
> > weight of the body. Since that entire "cage" and all the cabinets, wall
> finishes, etc., are thus cantilevered from the chassis with those
> > aluminum floor joists, they eventually sag -- and the plywood floor
> follows.
> >
> > Thus the only way to correct that bowing is to straighten, and,
> probably, reinforce, those floor joists. Worth it, unless you're doing a
> > complete
> > frame-off restoration? Probably not, IMHO.
> >
> > HTH,
> >
> > Ken H.
>
> There may be times that I do not completely agree with Ken (either one)
> but this is not one of those times.
>
> the floor sag is (I think) more pronounced in my 73 as they had a thinner
> floor, so I studied the issue at some length and came to that very same
> conclusion. The impediment to a repair is that there is no depth of the
> frame channel to work with, so there is no place to put a diagonal brace to
> the cage frame edge.
>
> I even went so far as to analyze and model what could be done. If you are
> willing to give 2" of ground clearance for a few new thwartships members,
> it could make a difference. My coach drags enough as it is, thank you.
>
> Matt
> --
> Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> Electronically Controlled Quiet Engine Cooling Fan
> OE Rear Drum Brakes with Applied Control Arms
> SE Michigan - Twixt A2 and Detroit
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--

*John Phillips*
 
Don't know you from Adam and I don't know where you live, but I commend you
for your respect of the Fairer Sex.
You said, " my wife " not "THE wife" which usually sends me to the coach
for the night!

Mike in NS

On Tue, Mar 6, 2018 at 7:02 PM, John Phillips
wrote:

> And I thought about storing a ramp, like a Uhaul truck, under the coach so
> I push my wife up into the coach. If dragging is a problem then a ramp or a
> chairlift is out of the question.
>

>

> > > Shane,
> > >
> > > I think you're going to find that the bowing of the floor is a common
> > GMCMH problem which most of us either don't notice or choose to ignore.
> If
> > > you study the construction of the body, you'll find that the basic body
> > structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > > (welded) together with three horizontal longitudinal members on each
> > side. That cage is overlaid, and tremendously strengthened, by the
> aluminum
> > > and SMC (Sheet Molded Composite) sheets bonded to it.
> > >
> > > That basic body rests on lateral aluminum "floor joists" which are
> > welded to the lower of those longitudinal members on each side. Those
> > "floor
> > > joists" are then supported a few inches (12 or so?), toward the middle
> > of the coach, by the steel chassis, which is eventually bearing the
> entire
> > > weight of the body. Since that entire "cage" and all the cabinets,
> wall
> > finishes, etc., are thus cantilevered from the chassis with those
> > > aluminum floor joists, they eventually sag -- and the plywood floor
> > follows.
> > >
> > > Thus the only way to correct that bowing is to straighten, and,
> > probably, reinforce, those floor joists. Worth it, unless you're doing a
> > > complete
> > > frame-off restoration? Probably not, IMHO.
> > >
> > > HTH,
> > >
> > > Ken H.
> >
> > There may be times that I do not completely agree with Ken (either one)
> > but this is not one of those times.
> >
> > the floor sag is (I think) more pronounced in my 73 as they had a thinner
> > floor, so I studied the issue at some length and came to that very same
> > conclusion. The impediment to a repair is that there is no depth of the
> > frame channel to work with, so there is no place to put a diagonal brace
> to
> > the cage frame edge.
> >
> > I even went so far as to analyze and model what could be done. If you
> are
> > willing to give 2" of ground clearance for a few new thwartships members,
> > it could make a difference. My coach drags enough as it is, thank you.
> >
> > Matt
> > --
> > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > Electronically Controlled Quiet Engine Cooling Fan
> > OE Rear Drum Brakes with Applied Control Arms
> > SE Michigan - Twixt A2 and Detroit
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
>
>
>
> --
>
> *John Phillips*
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
 
Some wives might take exception to being referred to as some man's
possession, like, my car, my toothbrush, my wife, etc. Some may actually
prefer to be known as THE WIFE. Kind of a case by case deal. I would tread
lightly around that subject. Machines are far simpler to figure out than
wives are, jus sayin'. (Grin)
Jim Hupy
Salem, Or
78 GMC ROYALE 403

Don't know you from Adam and I don't know where you live, but I commend you
for your respect of the Fairer Sex.
You said, " my wife " not "THE wife" which usually sends me to the coach
for the night!

Mike in NS

On Tue, Mar 6, 2018 at 7:02 PM, John Phillips
wrote:

> And I thought about storing a ramp, like a Uhaul truck, under the coach so
> I push my wife up into the coach. If dragging is a problem then a ramp or
a
> chairlift is out of the question.
>

>

> > > Shane,
> > >
> > > I think you're going to find that the bowing of the floor is a common
> > GMCMH problem which most of us either don't notice or choose to ignore.
> If
> > > you study the construction of the body, you'll find that the basic
body
> > structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > > (welded) together with three horizontal longitudinal members on each
> > side. That cage is overlaid, and tremendously strengthened, by the
> aluminum
> > > and SMC (Sheet Molded Composite) sheets bonded to it.
> > >
> > > That basic body rests on lateral aluminum "floor joists" which are
> > welded to the lower of those longitudinal members on each side. Those
> > "floor
> > > joists" are then supported a few inches (12 or so?), toward the middle
> > of the coach, by the steel chassis, which is eventually bearing the
> entire
> > > weight of the body. Since that entire "cage" and all the cabinets,
> wall
> > finishes, etc., are thus cantilevered from the chassis with those
> > > aluminum floor joists, they eventually sag -- and the plywood floor
> > follows.
> > >
> > > Thus the only way to correct that bowing is to straighten, and,
> > probably, reinforce, those floor joists. Worth it, unless you're doing
a
> > > complete
> > > frame-off restoration? Probably not, IMHO.
> > >
> > > HTH,
> > >
> > > Ken H.
> >
> > There may be times that I do not completely agree with Ken (either one)
> > but this is not one of those times.
> >
> > the floor sag is (I think) more pronounced in my 73 as they had a
thinner
> > floor, so I studied the issue at some length and came to that very same
> > conclusion. The impediment to a repair is that there is no depth of the
> > frame channel to work with, so there is no place to put a diagonal brace
> to
> > the cage frame edge.
> >
> > I even went so far as to analyze and model what could be done. If you
> are
> > willing to give 2" of ground clearance for a few new thwartships
members,
> > it could make a difference. My coach drags enough as it is, thank you.
> >
> > Matt
> > --
> > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > Electronically Controlled Quiet Engine Cooling Fan
> > OE Rear Drum Brakes with Applied Control Arms
> > SE Michigan - Twixt A2 and Detroit
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
>
>
>
> --
>
> *John Phillips*
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
 
Oh how true, Jim. And that was coach not couch, but not so bad in the
summer!

Mike in .... the house so far tonight!

> Some wives might take exception to being referred to as some man's
> possession, like, my car, my toothbrush, my wife, etc. Some may actually
> prefer to be known as THE WIFE. Kind of a case by case deal. I would tread
> lightly around that subject. Machines are far simpler to figure out than
> wives are, jus sayin'. (Grin)
> Jim Hupy
> Salem, Or
> 78 GMC ROYALE 403
>

>
> Don't know you from Adam and I don't know where you live, but I commend you
> for your respect of the Fairer Sex.
> You said, " my wife " not "THE wife" which usually sends me to the coach
> for the night!
>
> Mike in NS
>
> On Tue, Mar 6, 2018 at 7:02 PM, John Phillips

>
> > And I thought about storing a ramp, like a Uhaul truck, under the coach
> so
> > I push my wife up into the coach. If dragging is a problem then a ramp or
> a
> > chairlift is out of the question.
> >
> > On Tue, Mar 6, 2018 at 2:29 PM, Matt Colie

> >

> > > > Shane,
> > > >
> > > > I think you're going to find that the bowing of the floor is a common
> > > GMCMH problem which most of us either don't notice or choose to ignore.
> > If
> > > > you study the construction of the body, you'll find that the basic
> body
> > > structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > > > (welded) together with three horizontal longitudinal members on each
> > > side. That cage is overlaid, and tremendously strengthened, by the
> > aluminum
> > > > and SMC (Sheet Molded Composite) sheets bonded to it.
> > > >
> > > > That basic body rests on lateral aluminum "floor joists" which are
> > > welded to the lower of those longitudinal members on each side. Those
> > > "floor
> > > > joists" are then supported a few inches (12 or so?), toward the
> middle
> > > of the coach, by the steel chassis, which is eventually bearing the
> > entire
> > > > weight of the body. Since that entire "cage" and all the cabinets,
> > wall
> > > finishes, etc., are thus cantilevered from the chassis with those
> > > > aluminum floor joists, they eventually sag -- and the plywood floor
> > > follows.
> > > >
> > > > Thus the only way to correct that bowing is to straighten, and,
> > > probably, reinforce, those floor joists. Worth it, unless you're doing
> a
> > > > complete
> > > > frame-off restoration? Probably not, IMHO.
> > > >
> > > > HTH,
> > > >
> > > > Ken H.
> > >
> > > There may be times that I do not completely agree with Ken (either one)
> > > but this is not one of those times.
> > >
> > > the floor sag is (I think) more pronounced in my 73 as they had a
> thinner
> > > floor, so I studied the issue at some length and came to that very same
> > > conclusion. The impediment to a repair is that there is no depth of
> the
> > > frame channel to work with, so there is no place to put a diagonal
> brace
> > to
> > > the cage frame edge.
> > >
> > > I even went so far as to analyze and model what could be done. If you
> > are
> > > willing to give 2" of ground clearance for a few new thwartships
> members,
> > > it could make a difference. My coach drags enough as it is, thank you.
> > >
> > > Matt
> > > --
> > > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > > Electronically Controlled Quiet Engine Cooling Fan
> > > OE Rear Drum Brakes with Applied Control Arms
> > > SE Michigan - Twixt A2 and Detroit
> > >
> > > _______________________________________________
> > > GMCnet mailing list
> > > Unsubscribe or Change List Options:
> > > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> > >
> >
> >
> >
> > --
> >
> > *John Phillips*
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> >
>
>
>
> --
> Michael Beaton
> 1977 Kingsley 26-11
> 1977 Eleganza II 26-3
> Antigonish, NS
>
> Life is too short to hold a grudge; slash some tires and call it even !
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>

--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
 
My wife is proud to be my wife as I am proud to be her husband.

Some people are simply too danged touchy!

D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com

________________________________
From: Gmclist on behalf of James Hupy
Sent: Tuesday, March 6, 2018 17:24
To: gmclist
Subject: Re: [GMCnet] Floor not level

Some wives might take exception to being referred to as some man's
possession, like, my car, my toothbrush, my wife, etc. Some may actually
prefer to be known as THE WIFE. Kind of a case by case deal. I would tread
lightly around that subject. Machines are far simpler to figure out than
wives are, jus sayin'. (Grin)
Jim Hupy
Salem, Or
78 GMC ROYALE 403

Don't know you from Adam and I don't know where you live, but I commend you
for your respect of the Fairer Sex.
You said, " my wife " not "THE wife" which usually sends me to the coach
for the night!

Mike in NS

On Tue, Mar 6, 2018 at 7:02 PM, John Phillips
wrote:

> And I thought about storing a ramp, like a Uhaul truck, under the coach so
> I push my wife up into the coach. If dragging is a problem then a ramp or
a
> chairlift is out of the question.
>

>

> > > Shane,
> > >
> > > I think you're going to find that the bowing of the floor is a common
> > GMCMH problem which most of us either don't notice or choose to ignore.
> If
> > > you study the construction of the body, you'll find that the basic
body
> > structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > > (welded) together with three horizontal longitudinal members on each
> > side. That cage is overlaid, and tremendously strengthened, by the
> aluminum
> > > and SMC (Sheet Molded Composite) sheets bonded to it.
> > >
> > > That basic body rests on lateral aluminum "floor joists" which are
> > welded to the lower of those longitudinal members on each side. Those
> > "floor
> > > joists" are then supported a few inches (12 or so?), toward the middle
> > of the coach, by the steel chassis, which is eventually bearing the
> entire
> > > weight of the body. Since that entire "cage" and all the cabinets,
> wall
> > finishes, etc., are thus cantilevered from the chassis with those
> > > aluminum floor joists, they eventually sag -- and the plywood floor
> > follows.
> > >
> > > Thus the only way to correct that bowing is to straighten, and,
> > probably, reinforce, those floor joists. Worth it, unless you're doing
a
> > > complete
> > > frame-off restoration? Probably not, IMHO.
> > >
> > > HTH,
> > >
> > > Ken H.
> >
> > There may be times that I do not completely agree with Ken (either one)
> > but this is not one of those times.
> >
> > the floor sag is (I think) more pronounced in my 73 as they had a
thinner
> > floor, so I studied the issue at some length and came to that very same
> > conclusion. The impediment to a repair is that there is no depth of the
> > frame channel to work with, so there is no place to put a diagonal brace
> to
> > the cage frame edge.
> >
> > I even went so far as to analyze and model what could be done. If you
> are
> > willing to give 2" of ground clearance for a few new thwartships
members,
> > it could make a difference. My coach drags enough as it is, thank you.
> >
> > Matt
> > --
> > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > Electronically Controlled Quiet Engine Cooling Fan
> > OE Rear Drum Brakes with Applied Control Arms
> > SE Michigan - Twixt A2 and Detroit
> >
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Flist.gmcnet.org%2Fmailman%2Flistinfo%2Fgmclist_list.gmcnet.org&data=02%7C01%7C%7C252b923a96c243e3b98808d583b98e93%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559755335541484&sdata=oLsgbVKd0Zv51V1Ut1vNSJFF0k3EywePiVvEjjVyG30%3D&reserved=0
> >
>
>
>
> --
>
> *John Phillips*
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Flist.gmcnet.org%2Fmailman%2Flistinfo%2Fgmclist_list.gmcnet.org&data=02%7C01%7C%7C252b923a96c243e3b98808d583b98e93%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636559755335541484&sdata=oLsgbVKd0Zv51V1Ut1vNSJFF0k3EywePiVvEjjVyG30%3D&reserved=0
>

--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
_______________________________________________
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Unsubscribe or Change List Options:
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Hey Mac, on the subject of other people's opinions, there are a whole bunch
of ways this can go. We are dealing with people here. If I have learned
anything from being married to my first wife for 50 years, and still
married to Judy, it is that people's preferences differ. What works for one
couple, might not work for another. That was my point, and it was not
intended to be criticism. Sorry if it was taken that way.
Jim Hupy

My wife is proud to be my wife as I am proud to be her husband.

Some people are simply too danged touchy!

D C "Mac" Macdonald
Amateur Radio K2GKK
Since 30 November '53
USAF and FAA, Retired
Member GMCMI & Classics
Oklahoma City, OK
"The Money Pit"
TZE166V101966
'76 ex-Palm Beach
k2gkk + hotmail dot com

________________________________
From: Gmclist on behalf of James Hupy <
jamesh1296>
Sent: Tuesday, March 6, 2018 17:24
To: gmclist
Subject: Re: [GMCnet] Floor not level

Some wives might take exception to being referred to as some man's
possession, like, my car, my toothbrush, my wife, etc. Some may actually
prefer to be known as THE WIFE. Kind of a case by case deal. I would tread
lightly around that subject. Machines are far simpler to figure out than
wives are, jus sayin'. (Grin)
Jim Hupy
Salem, Or
78 GMC ROYALE 403

Don't know you from Adam and I don't know where you live, but I commend you
for your respect of the Fairer Sex.
You said, " my wife " not "THE wife" which usually sends me to the coach
for the night!

Mike in NS

On Tue, Mar 6, 2018 at 7:02 PM, John Phillips
wrote:

> And I thought about storing a ramp, like a Uhaul truck, under the coach so
> I push my wife up into the coach. If dragging is a problem then a ramp or
a
> chairlift is out of the question.
>

>

> > > Shane,
> > >
> > > I think you're going to find that the bowing of the floor is a common
> > GMCMH problem which most of us either don't notice or choose to ignore.
> If
> > > you study the construction of the body, you'll find that the basic
body
> > structure is a cage of vertical "hoops" (really inverted "U"s) anchored
> > > (welded) together with three horizontal longitudinal members on each
> > side. That cage is overlaid, and tremendously strengthened, by the
> aluminum
> > > and SMC (Sheet Molded Composite) sheets bonded to it.
> > >
> > > That basic body rests on lateral aluminum "floor joists" which are
> > welded to the lower of those longitudinal members on each side. Those
> > "floor
> > > joists" are then supported a few inches (12 or so?), toward the middle
> > of the coach, by the steel chassis, which is eventually bearing the
> entire
> > > weight of the body. Since that entire "cage" and all the cabinets,
> wall
> > finishes, etc., are thus cantilevered from the chassis with those
> > > aluminum floor joists, they eventually sag -- and the plywood floor
> > follows.
> > >
> > > Thus the only way to correct that bowing is to straighten, and,
> > probably, reinforce, those floor joists. Worth it, unless you're doing
a
> > > complete
> > > frame-off restoration? Probably not, IMHO.
> > >
> > > HTH,
> > >
> > > Ken H.
> >
> > There may be times that I do not completely agree with Ken (either one)
> > but this is not one of those times.
> >
> > the floor sag is (I think) more pronounced in my 73 as they had a
thinner
> > floor, so I studied the issue at some length and came to that very same
> > conclusion. The impediment to a repair is that there is no depth of the
> > frame channel to work with, so there is no place to put a diagonal brace
> to
> > the cage frame edge.
> >
> > I even went so far as to analyze and model what could be done. If you
> are
> > willing to give 2" of ground clearance for a few new thwartships
members,
> > it could make a difference. My coach drags enough as it is, thank you.
> >
> > Matt
> > --
> > Matt & Mary Colie - '73 Glacier 23 - Members GMCMI, GMCGL, GMCES
> > Electronically Controlled Quiet Engine Cooling Fan
> > OE Rear Drum Brakes with Applied Control Arms
> > SE Michigan - Twixt A2 and Detroit
> >
> > _______________________________________________
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>
>
>
> --
>
> *John Phillips*
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS

Life is too short to hold a grudge; slash some tires and call it even !
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