Badger5AH Fabrications
Page 1 of 2 12 LastLast
Results 1 to 40 of 64
Like Tree12Likes

Thread: Pano roof exploded

  1. #1
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335

    Pano roof exploded

    Gents a few of you have been members far longer than me , does anyone recollect the below?????

    Audi A3 2.0 TDI Sport - Sun roof just explode !!!

    This has happened to my car yesterday , all windows closed , driving about 60 on flat dual carriage way , the loudest crack / bang / honestly like a gun shoot, the pano sun roof explodes , almost lost it on road , glass everywhere !

    many issues later as for some reason audi's computers can't tell difference between a sunroof or a whole roof made of glass , my car is with Audi and I'm in an A4!!!

    Has anyone heard of this, I've seen Q5's have had a recall ? But not A3's?? Any help greatly appreciated, as at the moment I'm not sure even when fixed I want the thing back , if it's a fault ??

    cheers
    Audi A3 8v 2.0TDi S-Line, glacier white.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    VeeDubDan's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Jan 2007
    Location
    Aberdeen
    Posts
    254
    £900+ well spent.
    8V S3; Sportback, S-Tronic, Monsoon Grey, Aluminium Roof Rails, Privacy Glass, Supersport Seats, Comfort Pack, Technology Pack High, Bang & Olufsen, Folding, Dimming Mirrors, Interior Light Pack, Extended Mono.Pur, Parking System Plus, Reversing Camera, Rear Side Airbags, Reversible Boot Mat, Tyre Pressure Monitor, Hold Assist

  4. #3
    andy203's Avatar
    181 BHP

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Norfolk
    Posts
    274
    That's not good news for folks with cars with Panoramic Sun roofs or others like me waiting for cars with it spec'd. Hope nobody injured, any known cause?
    TonyH38 likes this.
    Proud Owner - A3 Sportback 2 lt Quattro - S Line - Daytona Grey

  5. #4
    Neutral

    Status
    Offline
    Join Date
    Jan 2014
    Location
    Cheshire
    Posts
    94
    Wow, never heard of that before, and I picked up my new Saloon with sunroof last week. Hope you get it fixed ok and they tell you it won't happen again! Let us know how you get on.

  6. #5
    Battlekrapz's Avatar
    2nd Gear

    Status
    Online
    Join Date
    May 2013
    Posts
    412
    Ouch, that's bad...
    # Currently enjoying my Audi S3 8V Sportback in Estoril blue #

  7. #6
    Snake Pliskin's Avatar
    4th Gear

    Status
    Offline
    Join Date
    Feb 2013
    Posts
    804
    That is seriously concerning.

    Glad you ok and no one hurt !

    Would major reassurance on safety of the pano roof after that.
    2013 (63) Audi S5 coupe estoril blue black edition

  8. #7
    robo1million's Avatar
    1st Gear

    Status
    Offline
    Join Date
    Nov 2013
    Location
    Derbyshire
    Posts
    196
    Google it.... Seems a common thing across a number of manufacturers.... Worrying!!!
    Using Tapatalk

  9. #8
    J6YAK's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Sep 2009
    Location
    Aberdeen
    Posts
    346
    You certainly don't need a glass shower when out on a drive do you!! Glad I didn't spec it!!
    Hope it all gets sorted soon for you
    Here at last: MY14 S3 Sportback, Manual, Estoril Blue, Rails, SS Seats, LED Headlights, Interior LED pack, Privacy glass, Comfort pack, Audi Sound System, Black Inlays.
    Just gone: MY13 Audi TT 2.0 TDI Quattro Amplified Black Edition, Misano Red, Privacy glass, Sat nav
    Previous : MY12 A3 2.0TDI Quattro Black Edition, Misano Red, Bose, Full Leather, Privacy glass

  10. #9
    Neutral

    Status
    Offline
    Join Date
    Sep 2013
    Location
    Sydney
    Posts
    46
    Had you had it tinted by any chance?

    (not sure it would have exploded if that was the case)
    On order: Monsoon Grey 8V S3 Sportback - S-Tronic - Performance Pack - Sunroof - Assistance Pack - Mirror Pack

  11. #10
    1st Gear

    Status
    Offline
    Join Date
    Feb 2013
    Posts
    124
    Hope no injuries from flying glass, and hope it does not happen to mine.

  12. #11
    snowfree52's Avatar
    Full LED baby !

    Status
    Offline
    Join Date
    May 2013
    Posts
    466
    pics ?
    A3 3-door TDI 184 Quattro Stronic Brilliant Red : Sline kit - Auxiliary heating - LED headlights - 18" 10-spoke rims - audi connect - magnetic ride - driver assistance package - side assist - rear camera + park assist - alcantara/leather seats - auto dimming mirror - panoramic glass sunroof - towing equipment - electric lumbar support - heated front seats - hold assist - high beam assist - advanced key - B&O sound system etc
    Tuning box DTUK, 235hp/480Nm
    1/4 Mile 13.84 @ 95.2 MPH
    Porsche BBK...

  13. #12
    I know the windscreen on the A3 is made from laminated glass but are the side and rear windows made from laminated or toughened glass.
    Dave R (h5djr)
    ----------------------------------------------------------------------------------------------------
    A3 8V 2.0 TDI-184 Sportback Sport s-tronic quattro - Silver + lots of options - my 9th A3

  14. #13
    Reverse Gear

    Status
    Offline
    Join Date
    Feb 2014
    Posts
    21
    This is on an 8P, which has quite a different Pan roof to the 8V. I heard about people having issues (even the likes of Golf 6's and Polo'swith pano roofs). My cousin even had his explode on a Mini Cooper S.

    I believe that the 8v pan roofs have been sorted from what I hear, hence the 2/3 glass design and metal for the last 1/3 Lets hope it actually IS sorted and we have nothing to worry about!!
    Last edited by B8on19s; 10th March 2014 at 11:31.

  15. #14
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Quote Originally Posted by B8on19s View Post
    I believe that the *v pn roofs have been sorted from what I hear, hence the 2/3 glass design and metal for the last 1/3 Lets hope it actually IS sorted and we have nothing to worry about!!
    The existence of this thread suggests not... The thread he linked to was for the 8P, but this one is an 8V if the signature is anything to go by!
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  16. #15
    Reverse Gear

    Status
    Offline
    Join Date
    Feb 2014
    Posts
    21
    Quote Originally Posted by cemerson View Post
    The existence of this thread suggests not... The thread he linked to was for the 8P, but this one is an 8V if the signature is anything to go by!
    Doh!! Misread and referred to the linked thread only...damn!!! Ok, first 8V of exploding sunroof i heard of..

  17. #16
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Sorry no pics, Audi road side assistance took a few, but wasn’t really top of my list, but appeared to blow out from inside!!

    Sunroof comes tinted as standard.

    And yes, just linked the other thread as was similar to what happened to me, even though older model.

    No luckily nobody was hurt, was in car on my own, ( all I’ve thought about is what if kids had been with me !!! ) and the shade was closed , but that didn’t stop tiny shards flying everywhere!! Was driving on a flat duel carriageway, having just come off a roundabout, so was just accelerating , speed was about 40/50, all windows were closed, though i had had my side window open about 20/30 minutes before. Then seemed a bomb had gone off in car, have had windows go due to stones, but this seemed totally different , was so loud , and pressure in ears. Not proud to say panicked and swerved across road as though something had hit me, well not sure really what was going on, ended on grass verge.

    After calming down, rung Audi assistance , after their initially confusion of why I was ringing for a sunroof????? They understood the term panoramic!!! To be fair once they understood they dealt very quickly, but what they couldn’t do, due to the system, was organise a car to be brought out!!!. Apparently under normal accident procedure, if there is one, they can send a courtesy car out at the same time as car being picked up by road side assistance. Not in this case, i hate to say it ….. but computer side no.

    Was told to ring Audi UK, as they could sort a replacement car, and yes you guessed, initially told to ring back road side assistance as “they” deal with it. Again few calls later everyone understood. But still couldn’t send car, so would have to babysit car back to dealer where one was waiting.

    Now whilst this is going on and I’m calming down , I’m remembering that my car has actually been back to my dealer to fix a noisy pano roof and broken front driver’s seat. Twice in for the roof.

    So at the moment car in getting fixed, and I’m waiting on response from Audi of what’s happened. Audi UK have rung every day for an update from my side, which is great, but just want a car back that i don’t think this is going to happen again.

    Audi UK initially said , never heard of this, which i jumped in and said , what apart from the recall on Q5’s for this very thing???? That changed then to , just A3’s.

    I’m happy to have car back, but i want answers!!! One hopefully not a fault with car and maybe just one of those things, and two, the other dealer hasn’t caused it by doing whatever they did when in to be fixed. ( have moved since buying, so it’s not currently back with original dealer )


    and yes sorry mine is an 8V
    Last edited by number3; 10th March 2014 at 12:53.
    Audi A3 8v 2.0TDi S-Line, glacier white.

  18. #17
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Quote Originally Posted by h5djr View Post
    I know the windscreen on the A3 is made from laminated glass but are the side and rear windows made from laminated or toughened glass.
    I was surprised to learn from dealer, pano roof is not laminated.!! that's a lot of glass sitting above our heads!!
    Audi A3 8v 2.0TDi S-Line, glacier white.

  19. #18
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Also guys, cheers for concerns of nobody being hurt
    warren_S5 likes this.
    Audi A3 8v 2.0TDi S-Line, glacier white.

  20. #19
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Wow, strange that the glass isn't laminated.

    I can only imagine that because cars aren't TOTALLY rigid, it can put a lot of stress on the glass going over certain bumps or inducing certain stresses on the car, where a metal roof would flex or bend slightly to absorb it, but not glass. You would have thought they would take this into account though and mount the glass on some semi-flexible fixings that interface with the car, but who knows?
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  21. #20
    s33nyboy12's Avatar
    5th Gear

    Status
    Offline
    Join Date
    May 2012
    Location
    East midlands
    Posts
    1,388
    Just out of interest I know you were one of the first to get the new a3 ......, what's the mileage on yours mate????

    Sean
    Current: 2013 Audi A3 2.0 tdi s line 8V in black SD nav+ extras, E46 BMW M3, 1971 Volvo p1800, 2014 Ford transit sport 155ps ;-)

    Previous : Focus st 225 stage 1 (265 bhp and too much torque), 2002 audi s3 bam engine completely OEM, 2001 Audi a3 1.8 TQS 221bhp and about 20 other cars, majority civics ek4/ek9 and Bmw / Audi soot chucker's!

  22. #21
    warren_S5's Avatar
    Moderator

    Status
    Offline
    Join Date
    Oct 2007
    Posts
    7,166
    I nearly ordered this on my new car, now somewhat pleased that I didn't.

    How's your head?

    Did it actually just shatter and stay largely in situ or did it 'pop out' and fly?

    You think by today's standards they'd have this sort of thing in check. Not surprised it isn't laminated as it would add quite some weight to the roof which on these large glass panels would affect handling somewhat (as centre of gravity would be elevated quite a bit).

    When I think back to this thread: Amar Akoya's A3 build (panoramic roof retrofit) now it makes me shudder a bit at the prospect!

    Hope you get sorted out properly; that is quite a big deal in terms of safety. Suggest a complimentary R8 experience at Silverstone might help calm your nerves ;-)
    Audi S5 3.0V6T Coupe Black Edition

  23. #22
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Quote Originally Posted by s33nyboy12 View Post
    Just out of interest I know you were one of the first to get the new a3 ......, what's the mileage on yours mate????

    Sean
    Hey Sean , am at 45k , was high mileage at start due to job location , but will be under 60k once renew comes up next November.

    The thought crossed my mind about mileage, but the warranty is up to 60k so would expect these things to be tested up to that point
    Audi A3 8v 2.0TDi S-Line, glacier white.

  24. #23
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Quote Originally Posted by warren_S3 View Post
    I nearly ordered this on my new car, now somewhat pleased that I didn't.

    How's your head?

    Did it actually just shatter and stay largely in situ or did it 'pop out' and fly?

    You think by today's standards they'd have this sort of thing in check. Not surprised it isn't laminated as it would add quite some weight to the roof which on these large glass panels would affect handling somewhat (as centre of gravity would be elevated quite a bit).

    When I think back to this thread: Amar Akoya's A3 build (panoramic roof retrofit) now it makes me shudder a bit at the prospect!

    Hope you get sorted out properly; that is quite a big deal in terms of safety. Suggest a complimentary R8 experience at Silverstone might help calm your nerves ;-)
    Popped out, and then started falling! Once stopped was like a raised dome with hole at the top. Shade was closed so caught most of it , but covered in little tiny shards. Heads ok lol, but honestly ears where ringing! Was really strange .
    Audi A3 8v 2.0TDi S-Line, glacier white.

  25. #24
    RossR's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Apr 2013
    Posts
    490
    I'm not surprised it blew outwards. The air moving over the top of it would suck it out. Similar principle to an aircraft wing. It cold still have been triggered by something falling on it from above.

  26. #25
    number3's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Nov 2012
    Location
    East Sussex
    Posts
    335
    Quote Originally Posted by RossR View Post
    I'm not surprised it blew outwards. The air moving over the top of it would suck it out. Similar principle to an aircraft wing. It cold still have been triggered by something falling on it from above.
    Not totally convinced by the aircraft wing analogy , not saying you couldn't be right, just wouldn't think they would make a roof with any sort of upward lift ?

    As for something hitting it, sunroof was closed which makes it seem less likely , but that's not to say something didn't fly up and fall back down smack onto roof, just the fact they had the car in to fix the roof previously , and reading how this has happened on other makes and models , just makes me want to be sure !!!
    Audi A3 8v 2.0TDi S-Line, glacier white.

  27. #26
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    Quote Originally Posted by number3 View Post
    Not totally convinced by the aircraft wing analogy!
    Haha this is a whole completely new thread - how do planes fly

    Most pilots don't really know the complete answer, and most school children are taught a pack of lies !!
    cemerson likes this.

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  28. #27
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Yep, wing working is pretty complicated, and the thing taught to school kids is just wrong!

    The wing analogy does apply here though - Bernoulli's principle says that faster moving air = lower pressure, it's just as valid on a car as on a wing.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  29. #28
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    Air moving with respect to what though?

    The air moving under the car will be faster than the air moving over the car (splitter, smooth undertray, diffuser, spoiler) creating downforce

    But I agree that the air pressure on the outside of the pano roof will be lower than the inside, assuming a roadspeed of more than say 40mph !

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  30. #29
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    With respect to the car... the air inside the car will be at higher pressure than the air flowing over the top of the car, simple!

    Air vents actually slightly exaggerate this effect as well, since air gets pumped into the car through the vents but doesn't escape all that easily, so pressure inside the car actually raises slightly above ambient pressure anyway.

    Underneath the car doesn't really have anything to do with it as far as the roof is concerned!
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  31. #30
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Quote Originally Posted by veeeight View Post
    But I agree that the air pressure on the outside of the pano roof will be lower than the inside, assuming a roadspeed of more than say 40mph !
    Any speed at all (as long as you aren't travelling downwind at wind speed...) will have this affect. It doesn't just 'kick in' at higher speeds, it's there all the time, just stronger at higher speeds. Blowing gently over the top of a piece of paper demonstrates the effect quite nicely.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  32. #31
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    No no no you are falling for the school kids error of Bernoulli applying at all times!

    The other factors is that the cabin of the car may be positively pressurised by the blowers, or negatively pressurised by the rear of the car (where the cabin air exit waffle is in the rear wing) being in a different area to the roof! So you can't just say that the roof of the car will always have lower pressure with respect to the interior of the car at any speed.

    The clarification of the wing analogy is that you can't just say that the bottom of the car is irrelevant as the way the car is designed is an upside down wing, to provide negative lift. So the underside of the car will have higher airflow and lower pressure than the roof.

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  33. #32
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Bernoulli DOES apply at all times, it's a law of physics! The thing that people are told wrong about wings is that it's the 'longer distance' that the air has to travel that causes it to go faster, which is a load of rubbish. And that bernoulli's principle is the only thing at play, which it isn't.

    Quote Originally Posted by veeeight View Post
    The clarification of the wing analogy is that you can't just say that the bottom of the car is irrelevant as the way the car is designed is an upside down wing, to provide negative lift. So the underside of the car will have higher airflow and lower pressure than the roof.
    The roof doesn't interface with the underside of the car (unless your pano roof is thicker than I though and actually does poke out the bottom!), therefore irrelevant in this case. The things that matter to the roof are the pockets of air in contact with the roof, which is the air above the car, and the air inside the car. Underside has nothing to do with it, and doesn't have any bearing on what happens to the roof. To the car as a whole, yes, but not the roof on its own in relation to the car.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  34. #33
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    Bernoulli does not apply when there is no airflow. Therefore it does not apply at all times.
    I am merely being accurate (or pedantic if you like).

    When you used the term "wing analogy" I asked with respect to what. Again, because to a casual observer, this can imply, especially with previous statements about the "air travelling faster over the roof" - someone can take that to mean the car being analogous to the wing, rather than inside roof/outside roof. Again, I'm merely being accurate.

    An example of this misunderstanding of taking the wing analogy to mean the car can be found in post #25
    Not totally convinced by the aircraft wing analogy , not saying you couldn't be right, just wouldn't think they would make a roof with any sort of upward lift ?
    The car, if taken as a system (easily done), is analogous to an upside down wing. Therefore the underside of the car is relevant.

    The outside of the roof, taken with respect to the underside of the pano roof, can be influenced by Bernoulli, but only when there is airflow. And even in this case, it isn't always true that the outside of the roof will be in a lower pressure zone than the interior of the car.

    Again, I'm being accurate (pedantic).

    Edit: But this is now way off topic.
    Last edited by veeeight; 10th March 2014 at 17:49.

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  35. #34
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Quote Originally Posted by veeeight View Post
    Bernoulli does not apply when there is no airflow. Therefore it does not apply at all times.
    I am merely being accurate (or pedantic if you like).
    No airflow = ambient pressure. Bernoulli says this as well. It absolutely does apply! It just means you put 0 into Bernoulli's equation for v, still works. It's not accurate at all to say Bernoulli doesn't say this.

    Quote Originally Posted by veeeight View Post
    When you used the term "wing analogy" I asked with respect to what. Again, because to a casual observer, this can imply, especially with previous statements about the "air travelling faster over the roof" - someone can take that to mean the car being analogous to the wing, rather than inside roof/outside roof. Again, I'm merely being accurate.
    You can still say 'air travelling faster over the roof' and mean with respect to the inside. I think you've assumed the rest!

    Quote Originally Posted by veeeight View Post
    The car, if taken as a system (easily done), is analogous to an upside down wing. Therefore the underside of the car is relevant.
    Not to the roof though! I don't think anyone ever mentioned the whole car being analogous to a wing, I think you've assumed that! I certainly was only ever talking about the roof, so the underside of the car is irrelevant.

    Quote Originally Posted by veeeight View Post
    The outside of the roof, taken with respect to the underside of the pano roof, can be influenced by Bernoulli, but only when there is airflow.
    Which there was, as stated in the original post. The car was moving.

    Quote Originally Posted by veeeight View Post
    And even in this case, it isn't always true that the outside of the roof will be in a lower pressure zone than the interior of the car.
    Indeed, because there are other factors at play, but it certainly has a large effect.

    Quote Originally Posted by veeeight View Post
    But this is now way off topic.
    Indeed! But it's an interesting discussion.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  36. #35
    6th Gear

    Status
    Offline
    Join Date
    Sep 2013
    Location
    East Sussex
    Posts
    1,571
    All cars have hidden vents to prevent pressue inside them from becoming to high and uncomfortable. I doubt if the pressure becomes high enough to blow out a window because your ears would become painful...
    Now a proud owner of a A3 1.4 tfsi Saloon S-Line, 6-speed, Daytona Grey, Technology Pack, Comfort Pack, Cruise, Advanced Key, Privacy Glass, Audi Parking System Plus, Interior Lighting, Folding Door Mirrors, Light & Rain Sensor. Hold Assist.

  37. #36
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    It's a problem in gliding - air vents mean the cockpit slightly pressurises, and this then leaks out in undesirable places such as around the canopy and wing roots. A lot of people are experimenting with air 'exhausts' now to encourage the air to leave in one (planned) place to improve performance.
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  38. #37
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    Quote Originally Posted by cemerson View Post
    No airflow = ambient pressure. Bernoulli says this as well. It absolutely does apply! It just means you put 0 into Bernoulli's equation for v, still works. It's not accurate at all to say Bernoulli doesn't say this.
    I think you'll find that when v=0, there is no point talking about pressure differentials and nothing comes of the equation.


    Quote Originally Posted by cemerson View Post
    Not to the roof though! I don't think anyone ever mentioned the whole car being analogous to a wing,
    I gave you an example above where it was easily misunderstood!

    In all modern cars, there is at least one, if not two exit vents, normally situated in the lower rear 3/4. Colloquially known as a "waffle" due to its appearance.


    I really really hate forum ping pong !

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  39. #38
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    Quote Originally Posted by veeeight View Post
    I gave you an example above where it was easily misunderstood!
    You invented a situation that didn't happen, certainly :P
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

  40. #39
    5th Gear

    Status
    Offline
    Join Date
    Jul 2012
    Location
    Cheshire/N Staffs
    Posts
    1,345
    Yeah, right

    Maybe you just assumed it was you who pictured just the top of the roof/under the roof interface

    S3 8V 3DR DSG ACC ABS ADS AMI ASR ASS DAB DBW DIS DRL EBA EBD EDL EGR EPB EPS ESP GPS LED MFSW MMI PDC PSF RAC SDXC TFSI CO2 EEC OTR WTF OMG



  41. #40
    6th Gear

    Status
    Offline
    Join Date
    May 2013
    Posts
    3,242
    If you want to think that and it ends this conversation, fine by me :P
    Sport 2.0 TDI 150 Sportback in Scuba Blue, alcantara/leather, advanced key, audi sound system, comfort pack w/ ACC and park assist, deselect sports suspension, auto-dimming & folding door mirrors, electric lumbar support, heated seats, hold assist, non-smoking pack, side & lane assist, reversing camera, storage & luggage pack, tech pack with audi connect, tyre pressure warning, towbar, variable headlight range control, xenon light pack

 

 
Page 1 of 2 12 LastLast

Similar Threads

  1. Saloon with Pano Roof
    By snakehips in forum New A3/S3 (8V Chassis)
    Replies: 34
    Last Post: 22nd December 2013, 19:38
  2. 1996 Audi 80 Cabriolet - Roof Problems
    By stellarborne in forum Classic Audi Forum
    Replies: 1
    Last Post: 8th July 2006, 20:30
  3. Audi A3 2.0 TDI Sport - Sun roof just explode !!!
    By msullx in forum A3/S3/Sportback (8P Chassis)
    Replies: 22
    Last Post: 25th June 2006, 18:07
  4. Rear roof rattle - SO annoying
    By benk in forum A3/S3 Forum (8L Chassis)
    Replies: 2
    Last Post: 28th October 2003, 13:41
  5. 2002 A4 Cab roof trouble
    By gdcfc in forum A4/A4 cabriolet/S4 forum(B6 chassis)
    Replies: 5
    Last Post: 19th July 2003, 10:55

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO