I want a small ducktail to mount on the OEM spoiler !

[silver-S]

One more opinion, if you want it. The rounded ends look more like the styling of the rest of the car. There are no hard edges or flat surfaces anywhere else in the car's design, so having them on the spoiler looks out of place to my eye. In fact, I would round the edges of the rounded edge design!

[Nine8Six]

Hello derfo

I have a feeling it is a tad too late to pass on ideas but will give it a shot anyway. Perhaps one day you’ll handcraft more of those spoilers so I am all hoping for these ideas to be taken into consideration. I am one that believe Rick had a brilliant idea to start this thread. Spoilers are getting hard and harder to find these days so your help and amazing workmanship is much appreciated.

It would be pretentious to say that the attached spoiler is better than any others on the market however this is the design that would get me to swap the one I have in a flash. Some comments below:





^ The top arch (radius) would need to be exactly as the one from the rear bumper. Both in rear view and bird view. Unlike the one I currently have on my car atm which is a totally different radius when looking from any angle. It really annoys my eyes and I'm sure others can see it - unconsciously :/




^ In this picture I’ve omit the fillets on the side profiles of the spoiler so you can better see the actual side profile. The concave area would essentially be under the spoiler instead of above like most aftermarket spoiler currently on the market. The top is a simple organic flow-curve which I’m hoping will support aerodynamics (it should, according to my non-existent wind tunnel results).

Source file available: I am happy to supply this design in a solid model file format (*.IGS) so you can get someone locally to precisely CNC it out of a block of high density foam for mold forming. It would need to be scaled to the exact dimensions by your CNC contractor and yourself. This is something I haven’t done and sadly won’t have time to do. I am effectively fully over-booked for the next coming 24months (minimum) so i would be great if someone like yourself would take the challenge eventually. Perhaps after you’ve completed the one you are doing now

Thanks for your time and consideration

[Fintro11]

Originally Posted by Nine8Six

Hello derfo

I have a feeling it is a tad too late to pass on ideas but will give it a shot anyway. Perhaps one day you’ll handcraft more of those spoilers so I am all hoping for these ideas to be taken into consideration. I am one that believe Rick had a brilliant idea to start this thread. Spoilers are getting hard and harder to find these days so your help and amazing workmanship is much appreciated.

It would be pretentious to say that the attached spoiler is better than any others on the market however this is the design that would get me to swap the one I have in a flash. Some comments below:





^ The top arch (radius) would need to be exactly as the one from the rear bumper. Both in rear view and bird view. Unlike the one I currently have on my car atm which is a totally different radius when looking from any angle. It really annoys my eyes and I'm sure others can see it - unconsciously :/




^ In this picture I’ve omit the fillets on the side profiles of the spoiler so you can better see the actual side profile. The concave area would essentially be under the spoiler instead of above like most aftermarket spoiler currently on the market. The top is a simple organic flow-curve which I’m hoping will support aerodynamics (it should, according to my non-existent wind tunnel results).

Source file available: I am happy to supply this design in a solid model file format (*.IGS) so you can get someone locally to precisely CNC it out of a block of high density foam for mold forming. It would need to be scaled to the exact dimensions by your CNC contractor and yourself. This is something I haven’t done and sadly won’t have time to do. I am effectively fully over-booked for the next coming 24months (minimum) so i would be great if someone like yourself would take the challenge eventually. Perhaps after you’ve completed the one you are doing now

Thanks for your time and consideration

Hey Fred with your fancy computer simulators can't you simulate the car in a wind tunnel for us ? :P

[derfo]

Originally Posted by Nine8Six

Hello derfo

Source file available: I am happy to supply this design in a solid model file format (*.IGS) so you can get someone locally to precisely CNC it out of a block of high density foam for mold forming. It would need to be scaled to the exact dimensions by your CNC contractor and yourself. This is something I haven’t done and sadly won’t have time to do. I am effectively fully over-booked for the next coming 24months (minimum) so i would be great if someone like yourself would take the challenge eventually. Perhaps after you’ve completed the one you are doing now

Thanks for your time and consideration

Hello Nine8Six (Fred)

Me Fred Too. Tasteful design. It looks really good, pleasing to the eye. All I need to do this is what you have put on your post, the photos. I can work from there. I may do this after mine. Thanks for the time and effort you put into this.

[Nine8Six]

Originally Posted by derfo

Hello Nine8Six (Fred)

Me Fred Too. Tasteful design. It looks really good, pleasing to the eye. All I need to do this is what you have put on your post, the photos. I can work from there. I may do this after mine. Thanks for the time and effort you put into this.

Thanks for considering

I bet it is appealing to your eyes, it’s the same as yours Just upside down (no downforce). The idea was to keep the flow from the back bonnet going really. Speed limits here are 80km/hrs max so downforce is not a mandatory feature let’s just say. Aerodynamics was more appealing in my case.

I may just grab yours, slice off the corners with a laser, and finally get rid of the now fuggly 'wing' on the back of my car. Really starting to hate it in fact... got to go.

I think you nailed it spot-on with that little ducktail (thanks to Rick also!). Keep us updated

[VGM911]

Originally Posted by Nine8Six

Thanks for considering

I bet it is appealing to your eyes, it’s the same as yours Just upside down (no downforce). The idea was to keep the flow from the back bonnet going really. Speed limits here are 80km/hrs max so downforce is not a mandatory feature let’s just say.

What if your design creates lift? Without testing, how might you know one way or another?

[Nine8Six]

Originally Posted by VGM911

What if your design creates lift? Without testing, how might you know one way or another?

It would cost me much less in gasoline isn’t it! Speaking for myself only, I drive a little 200hp roaster/Boxster car on speed-limited public roads only. It just got to look good lolll

Specific to your question; I don’t really care mate. And that answer is pretty consistent with what our friends at Porsche R&D and MechEng dept formulated already. You can do quick math using the gravitational force formula where your car’s weight being y

Google “aerodynamic force formula”, now that formula overrides gravitational force for mass traveling at speeds at & above 120km/hr. That very same old physic formula our good friends at Porsche uses. Certainly something to be concerned about, now that I don’t deny. Did read once or twice that gravitational force starts to get pretty messed up when mass travels at speed. A fact lolll