[s-cars] I will NOT buy MORE UNDERTRAY Hardware!

[John Cody Forbes]

DZUS fasteners come in captive and non captive form.

-Cody (mobile)

On Nov 10, 2010, at 5:46 PM, Theodore Chen <tedebearp at yahoo.com> wrote:

> The Dzus fasteners I've used have a solid spring wire on the receiving end to 
> engage the fastener.  The Audi fasteners use little stamped steel tabs 
> protruding in a hole to engage the fastener.  I've lost several of those, even 
> after carefully putting them in.  It's not always easy to tell if the fastener 
> is fully engaged and locked, because those tabs in the receiver don't click 
> positively when the fastener is locked.
> 
> 
> 
> 
> ----- Original Message ----
> From: "qshipq at aol.com" <qshipq at aol.com>
> To: trgreen at comcast.net; s-car-list at audifans.com
> Sent: Wed, November 10, 2010 12:38:15 PM
> Subject: Re: [s-cars] I will NOT buy MORE UNDERTRAY Hardware!
> 
> 
> Aircraft panels don't flap in the wind, shift under load, nor are they attached 
> to flimsy metal brackets exposing them to deforming spring-nut failure...  We 
> can agree that Dzus fasteners can be the cats meow...  Even in an Audi, but I'm 
> thinking more along the design and application lines of this well engineered 
> design Audi underbelly 'tray':
> 
> http://www.dieselgeek.com/B5panzerplateinstallguide.html
> 
> Notice he uses a couple good 10x1.5 bolts in the subframe for primary load, the 
> Dzus are only goodlocation fasteners to a solid mount, with little chance of 
> being exposed to road/curb/bumper sheer/deformation forces.
> 
> I can see good use of Dzus fasteners in an Audi using the above example.  And 
> specific to the urS car, I've see bad design/application choice in using them 
> too.
> 
> Cheers
> 
> Scott J
> 
> 
> 
> 
> 
> 
> 
> 
> 
> -----Original Message-----
> From: Tom Green <trgreen at comcast.net>
> To: s-car-list at audifans.com
> Sent: Tue, Nov 9, 2010 2:59 pm
> Subject: Re: [s-cars] I will NOT buy MORE UNDERTRAY Hardware!
> 
> 
> I don't need any old fashioned bolts that any monkey lad can put in  
> 
> without understanding how they work.  He would probably cross-thread  
> 
> them.  However, no monkey lad is going to get the chance.
> 
> 
> 
> Those 1/4 turn fasteners actually are genuine Dzus fasteners covered  
> 
> under the original patent and still used to fasten aircraft panels.  
> 
> Before the clamshell engine nacelle was designed, there would be about  
> 
> 100 on each engine nacelle, and the high-paid mechanics could never  
> 
> fasten them all, but I think 5 is not asking too much.
> 
> 
> 
> If the aircraft came in the shop with 5 or 10 bad fasteners and it  
> 
> wasn't on the work order for repair they went out the door the same  
> 
> way unless they were all on the leading edge or something else  
> 
> critical.  With only 5 metal fasteners doing the structural work,  
> 
> missing fasteners become critical very quickly.  Losing the pan on the  
> 
> highway can be as dangerous as an airplane losing a panel inflight.
> 
> 
> 
> Tom '95 S6
> 
>          '95.5 S6 avant
> 
> Knoxville, TN
> 
> 
> 
> 
> 
> On Tuesday November 9, 2010, at 12:52 PM, Scott J <QSHIPQ at aol.com>  
> 
> wrote:
> 
> 
> 
>> OK - I`m sure theres something I`m missing...  Oh yea the obvious -  
> 
>> the attachment design of the urs underbelly tray sucks!  BMW uses  
> 
>> screws. Volvo and mercedes use screws - Audi used to use screws.  
> 
>> And without fail in the last 15 years -the first response I get  
> 
>> informing a customer hardware is missing - ` I just replaced those  
> 
>> (again)!`  POS
> 
>> 
> 
>> I have two v8 quattros in my driveway - both with the original pans  
> 
>> and original hardware.  The only reason why in my book?  They use  
> 
>> good old fashioned shouldered bolts to attach the tray - just like  
> 
>> the `other` guys do.  Why?  Cuz it works.  They don`t release under  
> 
>> vibration shift and sheer forces, and any monkey lad can pu them in  
> 
>> without understanding how they work.
> 
>> 
> 
>> What holds the pan on are not `dzuz` fasteners (those actually might  
> 
>> work) they are turn-type fasteners that go into some easily deformed  
> 
>> receivers.  The plastic pos`s on the wheel wells crackwith heat age  
> 
>> and a half hearted bump to the front bumper.
> 
>> 
> 
>> I used to stock a half dozen sets of hardware - I stopped doing that  
> 
>> years ago - cuz charging for them became a pita.  Fixing the broken  
> 
>> or missing pieces became a free service....  So I stopped and just  
> 
>> install whats there and put good 3M zip ties where the missing parts  
> 
>> were.  Fully zip-tied pans tested btw - without mentioning names -  
> 
>> fully imbedded in steamboats magnetic snowbanks....
> 
>> 
> 
>> To aluminum - i work on a B5 S4 with a killer aluminum plate made  
> 
>> and sold by Armadillo Armor Systems...  Has all the cooling ducts  
> 
>> and it attaches securely with some beefy bolt type hardware.  Pricey  
> 
>> but really well made.
> 
>> 
> 
>> I`m all for reinstalling the correct hardware where I find it on the  
> 
>> tray/body.  I also have absolutley no problem cutting off and  
> 
>> reinstalling good zip ties.  To those hardcore purists fighting  
> 
>> diligently to retain the original crappy Audi design?  Here`s a  
> 
>> budweiser toast to you...  Mr. Useless Audi Hardware Ordinance  
> 
>> buying guy!
> 
>> 
> 
>> :)
> 
>> 
> 
>> Scott J
> 
> 
> 
> 
> 
> 
> 
> 
> 
> _______________________________________________
> 
> S-CAR-List mailing list
> 
> http://audifans.com/mailman/listinfo/s-car-list
> 
> http://www.audifans.com/kb/List_information
> 
> 
> 
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information
> 
> _______________________________________________
> S-CAR-List mailing list
> http://audifans.com/mailman/listinfo/s-car-list
> http://www.audifans.com/kb/List_information