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C7Carbon | Rear Diffuser - Race Ed. Undertray | 3D Design, let us know your thoughts!

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Old 02-07-2018, 10:11 AM   #61
Mark Maple
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Looks great! Would the diffuser help keep the rear end from getting so dirty. I'm amazed at how quickly the rear end gets filthy. Also, will this be a simple DIY install?
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Old 02-08-2018, 02:36 PM   #62
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The under tray may offer some extra protection but some dirty may still the get up there. The rear diffuser will need to be removed in order to properly install the under tray, drilling on the diffuser is required. Installation guidelines will be available shortly!
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Old 02-08-2018, 04:19 PM   #63
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Looks good on McLaren


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Old 02-08-2018, 04:35 PM   #64
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Quote:
Originally Posted by C7 Carbon View Post
We are currently conducting digital wind tunnel analysis to ensure an increased air flow, making sure to maximize an outstanding performance benefit that the OEM spec diffuser will allow and still keep it usable for daily driving as well. Stay tuned for more updates

What I can see in the CHD simulation is increased drag! but less apparent is any increase in downforce.

It appears that you have accelerated the airflow under the car (see how the underflow remains attached to the ground after the car before rising up in wells of drag.) This acceleration is counterproductive in the drag department and generally a no-op in the DF department.

The likely culprit is the pinching section where the lower diffuser pinches off the airflow into the original diffuser.

See "Race car aerodynamics: Designing for Speed" Joseph Katz.
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Old 02-08-2018, 05:24 PM   #65
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Originally Posted by MitchAlsup View Post
What I can see in the CHD simulation is increased drag! but less apparent is any increase in downforce.

It appears that you have accelerated the airflow under the car (see how the underflow remains attached to the ground after the car before rising up in wells of drag.) This acceleration is counterproductive in the drag department and generally a no-op in the DF department.

The likely culprit is the pinching section where the lower diffuser pinches off the airflow into the original diffuser.

See "Race car aerodynamics: Designing for Speed" Joseph Katz.
They also changed the inputs (fluid properties? velocity?), like I pointed out. That CFD is basically a scam and definitely very shady:

https://www.corvetteforum.com/forums...post1595139731

Fact of the matter is, this probably doesn't do a damn thing for aero and adds a few pounds. The car just isn't low enough or flat enough underneath for it to effectively employ a rear diffuser. It looks pretty cool though.

Last edited by village idiot; 02-08-2018 at 05:26 PM.
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Old 02-08-2018, 07:56 PM   #66
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The product description says "Made with 100% authentic Carbon Fiber top layer, 2x2 twill cross weave pattern."

So what is used for the reinforcement layers, fiberglass?

Does this fit the Stingray or Z06 only?

Last edited by GOC; 02-08-2018 at 08:05 PM.
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Old 02-08-2018, 10:12 PM   #67
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Our Carbon Fiber Race Edition Under Tray is made with a 2x2 twill cross weave pattern Carbon Fiber top layer, reinforced with fiberglass back layers.
Fiberglass units, painted in Carbon Flash metallic finish are available as well.

Both options are UV clear coated and polished for a gloss finish. Ready to install!

We are currently working on catching up to all our Pre-Orders. Carbon Fiber and Carbon Flash finish are now available for purchase

Carbon Fiber:
http://www.c7carbon.com/c7-race-edit...on-fiber-p-663

Carbon Flash metallic finish:
http://www.c7carbon.com/c7-race-edit...on-flash-p-681


Thanks again guys, we look forward in completing your orders ASAP!
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Old 02-09-2018, 10:06 AM   #68
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Looks great! I excited about adding another C7 Carbon part to my car. Just waiting for installation details before pulling the trigger.
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Old 02-09-2018, 12:02 PM   #69
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Quote:
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Looks great! I excited about adding another C7 Carbon part to my car. Just waiting for installation details before pulling the trigger.
Sounds great! We should have a install sheet available late next week!
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Old 02-09-2018, 02:38 PM   #70
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Our Carbon Fiber Race Edition Under Tray is made with a 2x2 twill cross weave pattern Carbon Fiber top layer, reinforced with fiberglass back layers.
Fiberglass units, painted in Carbon Flash metallic finish are available as well.

Thanks, does it fit Stingray or only Z06?
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Old 02-10-2018, 02:55 AM   #71
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More stuff to polish.....Gets REAL dirty back there.
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Old 02-10-2018, 10:07 AM   #72
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hope it fits better than their stage 3 rear spoiler.......what a nightmare....best of luck ...
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Old 02-10-2018, 10:24 AM   #73
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Quote:
Originally Posted by C7 Carbon View Post
Hi Everyone!
Glad to announce that we now have the Race Edition Under Tray in production and the first units are currently in the works. Purchase details on the links bellow:




Let us know how we can help!
Thanks. Bought mine yesterday. Will post a PDF of the install after it arrives! Been looking at rear diffusers since I got my September 2013 built C7. This is the best looking one I have seen-from pics.

This should look great on my Artic White Grand Sport.

Had your CF splitter with end plates on my Z51, great product.

Last edited by JerryU; 02-10-2018 at 10:27 AM.
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Old 02-13-2018, 01:43 PM   #74
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Thanks again for your orders, we greatly appreciate it!
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Old 02-13-2018, 02:27 PM   #75
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Quote:
Originally Posted by bbrown450 View Post
hope it fits better than their stage 3 rear spoiler.......what a nightmare....best of luck ...


Me and you both, brother!






C7 can we get some shots from further back looking directly at the back so it's not so fish eyed and also maybe a back quarter angle shot?

Last edited by \Boost Monkey/; 02-13-2018 at 02:31 PM.
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Old 02-20-2018, 03:45 PM   #76
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PMs replied!
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