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The undertray seems to be missing on mine too. Is it just fitted for noise suppression or is there some aerodynamic advantage gained by its presence?
I.e. aiding airflow to the intercooler and oil cooler for perhaps?, even though they have their own 'ducts'.
I think it's aerodynamics and yes it am sure it does aid airflow to oil coolers and inetercoolers. I certainly ain't paying £200 for a bit of plastic that i know will piss me off
The undertray seems to be missing on mine too. Is it just fitted for noise suppression or is there some aerodynamic advantage gained by its presence?
I.e. aiding airflow to the intercooler and oil cooler for perhaps?, even though they have their own 'ducts'.
I would also like a alloy undertray depending on price
The undertray stops any crap from going up and around the engine bay if you look at a car which has had the undertray fitted from new and one that has had the undertray missing you will see the differance in condition of hoses and enginebay area
I haven't had any kind of undertray on the last audi's i have had, no ill effects. The one i did have was a right pain if you dropped a nut or bolt of course it wouldn't fall onto the ground but onto the tray, requiring tray removal.
Iain
Having owned Audis for over 16 years now, I have been refining my technique for removal of said nuts/bolts/tools....although it does help if you don't have an oil leak as that tends to glue everying to the undertray.
Park on a slope, facing up hill and simply launch the car then hit the brakes. You will move about a cars length forwards and what ever you dropped will be by your boot
Although I suspect that when I get around to upgrading to an RS2 undertray, the big airscoop will make things much easier.
Cheers n
Si
95 ABY S2 Coupe - Ragusa Green Subtle mods here and there
2011 A5 3.0 TDi - Lava Grey With every option available (except a towball)
Heavier aluminium version would put more strain on the mountings, in theory, but if it's not too thick that shouldn't be a problem.
More of a problem I think, is that an aluminium tray would permanently deform if it was hit by something, whereas the plastic one would bounce back into shape.
Furthermore, an aluminium tray would need a lot of work to create the shape (bear in mind that the trays are not flat by any stretch of the imagination).
CFRP is surely the way to go, with kevlar for a bit more flexibility. Once the mould is done the shape is easily repeated.
Just my two penn'orth.
__MDC__
Martin Cutting
aka Keeper of "The Teutonic Kitten"
It's not better than sex, but it runs it a close second.
BTW why not reinforce the weak points on the standard one? Or have you BTDT? I'm thinking large plates or washers to spread the load at each mounting hole, which is the area they are prone to tear-through at? I don't just mean fit washers with the part, but bond them into place.
__MDC__
Martin Cutting
aka Keeper of "The Teutonic Kitten"
It's not better than sex, but it runs it a close second.
I have been thinking about that, also about covering with alu all sensitive parts (exaust, rear diff, etc) but the problem would be when you touch something with the front bumper. the alu could destroy the front bumper cuz it is not flexible.
See can you make it into a proper sump guard and i might be interested
Only concern i have would be noise if it started to vibrate with the engine.
bit more involved than just an undertray as they are designed to take a beating, one of my mates has a 10mm thick duralium one on his rally car, but all the brackets to fix it on arent really suitable to retro fit it to a standard car
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(except a towball)
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