Boxster 986 Aerodynamics @180km/hr

[Nine8Six]

Originally Posted by steved0x

Also please add a 3rd radiator if it is a Boxster S

hmmm, well spotted

Originally Posted by JayG

Fred, can you do a run with the top down and see how it differs from top up?

I'm also dying to see this. Hard job tho as the model needs to be a water-tight solid body. But I'll try for sure.

Originally Posted by PaulE

Can you re-run the aerodynamics with your new center caps? I just know they will improve things. Just kidding, I am a big fan of your work. I was also surprised to see that your wing creates lift, just goes to show that you can't eyeball aerodynamic effects, the wing looks like it would create downforce.

Paul - can't do that. Those caps create such a violent vortex the team at Porsche studio will need to recall all those GT3. See it on the bright side though; so violent that the brake dust is sucked off the wheel (self-cleaning wheel)

Re wing: does not create any downforce or let's say nothing like the stock slab (tombstone?) that Porsche designed. The CFD I ran was based on my actual set-up (the wing + slab up). The Ricer in me said that the more wings you have the better. Results were so 'lifty' that I'm sure I would have killed myself if I'd ever ran this car on the circuit here (thank god I never did). City car only and I can't drive faster than 80km/h anywhere without murdering 1.4billion other drivers in front of me anyway :/

Those eBay sellers should really warn idiots (like myself) about the risks LOL

[Fintro11]

Would be interesting to see how the air dam with duck tail stands up

[Nine8Six]

Originally Posted by 78F350

Or do I have to just make my own locally?

I think Steve wants to do some. His idea really and I can't recommend it more. I'll buy one! Need some creativity but sure Steve is all geared up for that. Use original visual as-is or modify as you wish Steve.

Preview - surely look better up close:

[78F350]

Originally Posted by Nine8Six

I think Steve wants to do some. His idea really and I can't recommend it more. I'll buy one! Need some creativity but sure Steve is all geared up for that. Use original visual as-is or modify as you wish Steve.

Preview - surely look better up close:

I Like the angle in your original image. ...a little scaling and add a bit of text.


I still want a Procshe shirt, but this is not the one to do it on.

[Nine8Six]

Originally Posted by 78F350

I Like the angle in your original image. ...a little scaling and add a bit of text.

There you go, found it finally. Let me know when you've grabbed/saved it locally so I can delete it from my flickr (click to dwload the high resolution 2550*1350).

[Nine8Six]

And forget those $500 side vents (aka ram-air intake). Another bloody eBay scam that doesn't work. The air is pressured off the car sides on the 986 (see plots again)

Yea that's my car, who else's LOL

[78F350]

Thanks, got the image. ...I really need to get some good fonts.
Here's a layout put together with Gimp:

or a little busier.

[fridsten]

Originally Posted by 78F350

Thanks, got the image. ...I really need to get some good fonts.
Here's a layout put together with Gimp:


or a little busier.

One tiny detail, and you should only care if you're really anal about these things - which I am.
The picture is not of a Boxster S.

[truegearhead]

I would also love to see the top down results since I have with the top down on the track (most of us do).

Originally Posted by Nine8Six

hmmm, well spotted





I'm also dying to see this. Hard job tho as the model needs to be a water-tight solid body. But I'll try for sure.



Paul - can't do that. Those caps create such a violent vortex the team at Porsche studio will need to recall all those GT3. See it on the bright side though; so violent that the brake dust is sucked off the wheel (self-cleaning wheel)

Re wing: does not create any downforce or let's say nothing like the stock slab (tombstone?) that Porsche designed. The CFD I ran was based on my actual set-up (the wing + slab up). The Ricer in me said that the more wings you have the better. Results were so 'lifty' that I'm sure I would have killed myself if I'd ever ran this car on the circuit here (thank god I never did). City car only and I can't drive faster than 80km/h anywhere without murdering 1.4billion other drivers in front of me anyway :/

Those eBay sellers should really warn idiots (like myself) about the risks LOL

[PaulE]

Originally Posted by truegearhead

I would also love to see the top down results since I have with the top down on the track (most of us do).

Is that HDPE or some other kind of track event where you can run with the top down? I'm just curious because my region of PCA is NNJR, and I think their rules for HDPE require convertibles to run top up unless they have a full roll cage.

[JayG]

Originally Posted by PaulE

Is that HDPE or some other kind of track event where you can run with the top down? I'm just curious because my region of PCA is NNJR, and I think their rules for HDPE require convertibles to run top up unless they have a full roll cage.

Same in Zone 8 out in in the southwest
Top up is required, or if you have no top, arm restraints
Roll cage is not required for a Boxster unless you have a lot of performance points

[Nine8Six]

Topless as requested Jay! Just took me 4hrs just to sew and stitch those cabin surfaces LOL. You've done so much good e.g. leaving multiple kind msg on RL on my behalf, that I think I owe you more than a few visuals bud

RE Air Flow on the Topless boxster; to me it appears that the spoiler becomes redundant as there is absolutely no friction for the air to drag onto above your head. I'm not a professional but it appears to me that you are going to go so much faster at the track with the top down LOL You'll certainly have cheaper gas bills that's for sure

Velocity only - same speed (180km). No lift & drag figures in fear to get sued by Porsche if I ever try to go that far! Not my car after all and the CAD model may differ from specs (i.e it would be pretty unfair to them).