Bye Bye sunroof..
#1
Bye Bye sunroof..
I ones lost my tilt and slide sunroof of the cossie when doing about 130 mph. It was closed at the time and with a big bang it suddenly dissapeared at the motorway.. Luckally there was no one behind me so no damage to other cars. Does any one else has had this same experience??
#2
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God the number of times I have heard this happen over the last few years. Smit I can name off the top of my head now, but there was at least two other people who has had that happen to em.
#4
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Originally Posted by YBJ
So you say its a common problem than . But what causes it and can you prevent this happening (with high speed running of course..)
Since the day it happened to me I have never passed the 120 MPH again in the cossie....
Since the day it happened to me I have never passed the 120 MPH again in the cossie....
#7
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there is too much pressure building up inside the car and there is not enough pressure outside
somethings got to give
if it's any consolation, i rememebr vauxhall had the same problem with some of their corsas, but they would be standing still and you only had to close the boot a bit too hard and the glass went "ping"
somethings got to give
if it's any consolation, i rememebr vauxhall had the same problem with some of their corsas, but they would be standing still and you only had to close the boot a bit too hard and the glass went "ping"
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#10
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Originally Posted by dojj
there is too much pressure building up inside the car and there is not enough pressure outside
somethings got to give
if it's any consolation, i rememebr vauxhall had the same problem with some of their corsas, but they would be standing still and you only had to close the boot a bit too hard and the glass went "ping"
somethings got to give
if it's any consolation, i rememebr vauxhall had the same problem with some of their corsas, but they would be standing still and you only had to close the boot a bit too hard and the glass went "ping"
#12
Originally Posted by cossie4i
I have lost one before as well
Was about 220 miles from home and in February, so very cold.
Mine hit another car as well.
Steve.
Was about 220 miles from home and in February, so very cold.
Mine hit another car as well.
Steve.
So I see more people know of this existing problem now maybe there someone who know a good and solid modification.
I was thinking of making some kind of metal brace between the handle and the screw in the middle of the sunroof.
#13
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Originally Posted by YBJ
Originally Posted by cossie4i
I have lost one before as well
Was about 220 miles from home and in February, so very cold.
Mine hit another car as well.
Steve.
Was about 220 miles from home and in February, so very cold.
Mine hit another car as well.
Steve.
Steve.
#14
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my mate in his saph was racing a MR2 and hit about 140 and the sunroof came straight out with all the fixxings and runners!!!!! i have heard it is quite common, makes me wanna buy a motorsport shell hahahahah i wish!
#15
Testing the future
must be due to a pressure difference under the glass to over it.
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
#16
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It's all about aerodynamics. There is an upwards force on the roof of all cars.
This was very noticable on old cabriolets when they had the hood up - a large bulge seen above the front seats.
Obviously at greater speeds the greater the force and a sunroof is a weak point in the roof hence the reason for it giving way from time to time especially on older cars which may have corroded runners/fasteners.
Best solution is to remove the sunroof and weld the hole up!
Cheers,
Pete.
This was very noticable on old cabriolets when they had the hood up - a large bulge seen above the front seats.
Obviously at greater speeds the greater the force and a sunroof is a weak point in the roof hence the reason for it giving way from time to time especially on older cars which may have corroded runners/fasteners.
Best solution is to remove the sunroof and weld the hole up!
Cheers,
Pete.
#17
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FFS why can't people just design cars properly!!!
Anyway, how often does anyone ACTUALLY use their sunroof? I think I've opened mine perhaps twice in the 4 years I've had the car, and then just to see if it worked.
Anyway, how often does anyone ACTUALLY use their sunroof? I think I've opened mine perhaps twice in the 4 years I've had the car, and then just to see if it worked.
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Originally Posted by foreigneRS
must be due to a pressure difference under the glass to over it.
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
#20
I think it must be just rusted/weakened lug mountings on the underside of the sunroof, mine tried to pop out till I set it a bit lower, only by a few mm, don't know if it is the old screws snapping, but I replaced my roof with a better s/h one and SS screws, with CAP HEADS, so they don't sieze AGAIN I also used Coppaslip.
Works for me reguarly do over 150 no problems.
tabetha
Works for me reguarly do over 150 no problems.
tabetha
#21
Testing the future
Originally Posted by Dan
Originally Posted by foreigneRS
must be due to a pressure difference under the glass to over it.
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
probably too much pressure inside the car - possibly due to blocked exit holes (rubber flaps behind the rear bumper) - as any low pressure on the roof area would be the same for all cars at that speed
if you did not have them, or they are blocked, the air forced into the cabin by the blower and the forward motion creating a high pressure area at the base of the windscreen will just build up in the cabin creating a high pressure. if the pressure on the outside of the sunroof is low at high speed, the pressure difference will act on the area of the sunroof with an upward force, possibly strong enough to push it out
#22
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had the same prob..turns out the rear drainage pipes for the sunroof
were blocked..
i think air pressure from the front pipes caused the sunroof to pop..
cleaned them and had no prob's yet
were blocked..
i think air pressure from the front pipes caused the sunroof to pop..
cleaned them and had no prob's yet
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