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New Cheap Aluminum wing option

 
Old 03-20-2018, 01:29 PM
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Originally Posted by Uncle Humjaba View Post
Aero merits of said big **** aside, 160mph at road Atlanta in a Miata is insane.
Got to love that LS motor.
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Old 03-23-2018, 12:26 PM
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Originally Posted by shuiend View Post
Got to love that LS motor.
Yep, I've been passed many a time by that car between turn 7 and 10...
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Old 03-26-2018, 03:58 PM
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Results are available - Nine Lives Racing: The "Big ****" test
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Old 03-26-2018, 04:17 PM
  #64  
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How long is the pre order discount going to last?
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Old 03-26-2018, 08:25 PM
  #65  
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Originally Posted by UrbanSoot View Post
You mean this bigger 2D wing was less draggy and faster then a smaller 3D wing used incorrectly and mounted to high? Shocking.

Not knocking 9LR, I would have picked up one of these myself if I had not completed building my own wing literally a week before these were announced. But I still want to see real CFD/wind tunnel testing for numbers and lift/drag, not skewed tests vs a 3D wing before I sing their praises.
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Old 03-27-2018, 05:31 PM
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Originally Posted by Morello View Post
Yep, I've been passed many a time by that car between turn 7 and 10...
I wave, every single time.
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Hopefully so, but let's hope it's never necessary. Experiencing your safety gear in action is ... not optimal.
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Old 03-30-2018, 11:41 AM
  #67  
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So I posted on 9LR's facebook saying they should provide some data we could use to compare to the APR wings, and they just tagged me back this morning. Here's the free air data they just added to their site. Looks pretty damn good actually. Compare to the charts in my post #53.

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Old 03-30-2018, 02:51 PM
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Those are pretty impressive numbers and look like they could be improved considering the lack of a gurney. Can't help but notice this was on a 70" wing, not the 64"/68" that are legal for most miatas in various classes. Still 200lb of downforce @100mph with only 20lb of drag sounds pretty dam noticeable.
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Old 03-30-2018, 03:16 PM
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Originally Posted by Wingman703 View Post
Those are pretty impressive numbers and look like they could be improved considering the lack of a gurney. Can't help but notice this was on a 70" wing, not the 64"/68" that are legal for most miatas in various classes. Still 200lb of downforce @100mph with only 20lb of drag sounds pretty dam noticeable.
My thoughts exactly. I'm trying really hard to resist picking one up now...
Also, yes 9LR's CFD is on a 70" wing, but APR does not list the size they tested the GT-250 with. Since the largest size they offer is a 71", I'd assume that APR's numbers are based off of their biggest ****.

73lbs at 60MPH and 10 without a flap sounds pretty decent too...
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Old 04-04-2018, 04:54 PM
  #70  
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So I did a thing... and I'm very happy with it.

The endplates were just to center the airfoil in the box for shipping. I'll be fabricating my own uprights and endplates. I'll also be getting a range of gurney flap sizes to test/tune that aspect.
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Old 04-06-2018, 04:22 PM
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I'll most likely be going with that wing too. please keep us updated and enjoy
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Old 05-22-2018, 09:43 AM
  #72  
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Quick update.

Disclaimer: I am not a professional. I'm not sure how this is normally done but this is how I did it.
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Old 05-22-2018, 12:54 PM
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Now THAT, is awesome. Props to you sir. Just an idea, if you have time to burn, you can grind the forward facing edges of the stands down so they look more like a knife blade if that makes sense. I hear it helps with drag slightly.
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Old 05-22-2018, 01:05 PM
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Originally Posted by MiataMan00 View Post
Now THAT, is awesome. Props to you sir. Just an idea, if you have time to burn, you can grind the forward facing edges of the stands down so they look more like a knife blade if that makes sense. I hear it helps with drag slightly.
You'd actually want to knife blade the rear, and teardrop the front!

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Old 05-22-2018, 03:19 PM
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Front edges are rounded, rear edges are clipped 45 (Best I could do with my handheld router)

That's right. The uprights were HAND routed from 3/8" plate. Mounts and endplates were cut with a laser. Shoutout to Paco Motorsports.
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Old 05-22-2018, 03:24 PM
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Originally Posted by MiataMan00 View Post
, you can grind the forward facing edges of the stands down so they look more like a knife blade if that makes sense. I hear it helps with drag slightly.
Dont worry, everyone who was never into airplanes thinks this too.
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Old 05-22-2018, 04:04 PM
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Like I said, I know nothing about aero. Im the guy with cables holding his wing on after all. Proceed.
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Old 05-22-2018, 06:34 PM
  #78  
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Any easy options for a gurney flap?

The wing profile has a slot to allow one to slide in one from the sides...but would require the right profile / the right extruded piece:
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Old 05-22-2018, 07:30 PM
  #79  
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1-3% of chord length according to https://www.sciencedirect.com/science/article/pii/S136988699800010X


Nlr states ~9.5" chord length ergo 0.095-.285" for the flap length. The channel embedded in the wing is about 0.285" already.

Maybe find some aluminum or carbon fiber angle stock to fit?

I measured the width of the channel at 0.086" so that's the approximate limit to how thick the gurney can be to utilize that spot.
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Old 05-22-2018, 10:45 PM
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Originally Posted by psyber_0ptix View Post
Maybe find some aluminum or carbon fiber angle stock to fit?.
It looks like it's designed with something specific in mind which was why I was asking. Using some 90 degree aluminium angle stock it looks like your gurney flap will stick at an odd angle. Could just be the picture that looks like though I guess...

Last edited by Junkwhale; 05-22-2018 at 11:01 PM.
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