Bobbo
Memphis, TN
Senior Member
Joined: 09/16/2007
View Profile
 Offline
|
D.R.Bain wrote:I had a patio door on my stick built shatter under just these kind of conditions. Although these are dual pane. The edge seal failed and due to a quick warming during the day the inside pane shattered and the outside pane was intact.
If it was saftey glass it can fail on its own and for no apparent reason. To this day my 85 year old F-I-L will insist that when parking in the sun we need to open the window a crack so the glass won't break.
I have, personally, witnessed the rear window of a car shatter on a super hot August day when the car's windows and vents were all closed. I vote with your FIL.
Bobbo, Linda and the furry kid (German Shepherd)
'07 Winnebago Outlook 31C on a Ford E450 Super Duty Chassis
NRA Life Member
Near N35 12 17 W89 50 57
|
flht_db
Bordentown, New Jersey
New Member
Joined: 10/10/2006
View Profile
Offline
|
Bobbo wrote:D.R.Bain wrote:I had a patio door on my stick built shatter under just these kind of conditions. Although these are dual pane. The edge seal failed and due to a quick warming during the day the inside pane shattered and the outside pane was intact.
If it was saftey glass it can fail on its own and for no apparent reason. To this day my 85 year old F-I-L will insist that when parking in the sun we need to open the window a crack so the glass won't break.
I have, personally, witnessed the rear window of a car shatter on a super hot August day when the car's windows and vents were all closed. I vote with your FIL.
I second that as I have seen it happen also. Back window just explodes.
2007 Winnebago Sightseer 35j - The Hauler
8.5 X 16 Royal Cargo Enclosed
It's all about the Kids:
Dennis Baker Jr. GNCC and AGP #193
Darren Baker AGP #602
www.drb3racing.com
|
fourfurz
Memphis
Senior Member
Joined: 03/23/2008
View Profile
|
flht_db wrote:Bobbo wrote:D.R.Bain wrote:I had a patio door on my stick built shatter under just these kind of conditions. Although these are dual pane. The edge seal failed and due to a quick warming during the day the inside pane shattered and the outside pane was intact.
If it was saftey glass it can fail on its own and for no apparent reason. To this day my 85 year old F-I-L will insist that when parking in the sun we need to open the window a crack so the glass won't break.
I have, personally, witnessed the rear window of a car shatter on a super hot August day when the car's windows and vents were all closed. I vote with your FIL.
I second that as I have seen it happen also. Back window just explodes.
This phenomena is due to stress from heating.
2007 Mountain Aire 4528
2006 CRV SE
Based in Memphis area
|
FredC
cincinnati, oh
Senior Member
Joined: 07/15/2003
View Profile
Offline
|
I have a '97 Allegro Bus with a driver side slide out - about 15 feet long. It also has a driver's side entry door. I've had no problem with the slide at all, except after 11 years and 100,000 miles, it seems to come in or out slower each time I put it out anymore. (I expect the electric motor that powers the slideout to quit anytime) In the instruction book that came with our RV, the instructions explicitly state that the engine should be running when the slide is extended or retracted. Their reasoning for this is that operating the slide takes a lot of electric current, so to prevent discharging the batteries, the engine should be running. I think that, somehow your coach lost its level and the window was torqued enough to break. Maybe running the engine when you activate the slide will prevent this from happening again, because the air ride will be sure to level it.
I have had to have the windshield reset twice due to flexing and torquing the coach in uneven drives and roads. Once it was so bad that I could see daylight between the rubber gasket and the glass.
|
Sully2
Cincinnati
Senior Member
Joined: 01/20/2003
View Profile
|
FredC wrote:I have a '97 Allegro Bus with a driver side slide out - about 15 feet long. It also has a driver's side entry door. I've had no problem with the slide at all, except after 11 years and 100,000 miles, it seems to come in or out slower each time I put it out anymore. (I expect the electric motor that powers the slideout to quit anytime) In the instruction book that came with our RV, the instructions explicitly state that the engine should be running when the slide is extended or retracted. Their reasoning for this is that operating the slide takes a lot of electric current, so to prevent discharging the batteries, the engine should be running. I think that, somehow your coach lost its level and the window was torqued enough to break. Maybe running the engine when you activate the slide will prevent this from happening again, because the air ride will be sure to level it.
I have had to have the windshield reset twice due to flexing and torquing the coach in uneven drives and roads. Once it was so bad that I could see daylight between the rubber gasket and the glass.
Thats exactly what Country Coach told me to do wiht my single slide. Extend it with the ENGINE RUNNING so as to get MAX voltage ( I assume??) to the hwd pump motor. While I have done it off the batterys...you can physically HEAR the difference in the pump motor
2000 Country Coach Allure; Cummins ISC 330 HP; 71/2 - 8 MPG regardless
2002 Jeep Liberty
|
|
|
Sully2
Cincinnati
Senior Member
Joined: 01/20/2003
View Profile
|
fourfurz wrote:
This phenomena is due to stress from heating.
Yepper! Thermal stress. Same thing when you have a chip or a very small crack in a windshield...and its COLD outside and you run the defroster...all of a sudden ZIP and that tiny crack runs all the way across the windshield.
In "hot " weather...outside temps might be 105..?.110..?...INSIDE temps are over 140-150 degrees ( remember about NOT leaving babys unattended in a closed car in hot weather... )...outside is HOT...but NOT AS HOT as the inside....SNAP goes the glass!
|
Silver_Knight
Texas Hill Country
Senior Member
Joined: 04/12/2004
View Profile
Offline
|
flht_db wrote:Bobbo wrote:D.R.Bain wrote:I had a patio door on my stick built shatter under just these kind of conditions. Although these are dual pane. The edge seal failed and due to a quick warming during the day the inside pane shattered and the outside pane was intact.
If it was saftey glass it can fail on its own and for no apparent reason. To this day my 85 year old F-I-L will insist that when parking in the sun we need to open the window a crack so the glass won't break.
I have, personally, witnessed the rear window of a car shatter on a super hot August day when the car's windows and vents were all closed. I vote with your FIL.
I second that as I have seen it happen also. Back window just explodes.
THere are too many holes for air to move in and out, especially at such a slow pace. Think about it, does your car float? This idea just doesn't hold air 
In addition, if this were the case every time you slammed your door you would pop out your rear glass.
How much pressure would have to build up to break the glass?
Now that I think of it, AMC did build a car that had this problem it was the AMC Pacer, they put extra strong glass in it and in the summer it would expand like a ballon to look almost round 
Lee & Ren
Bryce: 8
Dillon: 7
Bailey: 4
2005 Monaco Knight 40PLQ
1999 Jeep Grand Cherokee Toad
|
Sully2
Cincinnati
Senior Member
Joined: 01/20/2003
View Profile
|
Silver_Knight wrote:flht_db wrote:Bobbo wrote:D.R.Bain wrote:I had a patio door on my stick built shatter under just these kind of conditions. Although these are dual pane. The edge seal failed and due to a quick warming during the day the inside pane shattered and the outside pane was intact.
If it was saftey glass it can fail on its own and for no apparent reason. To this day my 85 year old F-I-L will insist that when parking in the sun we need to open the window a crack so the glass won't break.
I have, personally, witnessed the rear window of a car shatter on a super hot August day when the car's windows and vents were all closed. I vote with your FIL.
I second that as I have seen it happen also. Back window just explodes.
THere are too many holes for air to move in and out, especially at such a slow pace. Think about it, does your car float? This idea just doesn't hold air
In addition, if this were the case every time you slammed your door you would pop out your rear glass.
How much pressure would have to build up to break the glass?
Now that I think of it, AMC did build a car that had this problem it was the AMC Pacer, they put extra strong glass in it and in the summer it would expand like a ballon to look almost round
But its NOT internal AIR pressure that causes them to break...its the thermals across the glass. Hot on one side...HOTTER THAN **** on the inside.
You can take a steel bar and support it on the ends only and HEAT just one side...and with enough heat..you can watch the thing bend!
|
wny_pat
Western NYS
Senior Member
Joined: 08/11/2007
View Profile
 Online
|
Silver_Knight wrote:Think about it, does your car float? Yes, doesn't your?
|
BamaRVer
Alabama
New Member
Joined: 10/11/2007
View Profile
Offline
|
Thanks for all the input and theories. Don't believe will find out exactly what caused the glass to shatter. Some interesting thoughts though. Now if I can just get the MH back in time for our Memorial Day trip.
TM
|
|
|
