First of all, hi everybody and congratulations for the excellent quality of the articles and discussions.
I'm an architecture student from Brazil who likes to know at least a little about almost everything you can think of (so please be patient with me because I'm not an expert in mechanics, aerodynamics nor anything like that - just a bit curious).
For the last two months or so, I've been wondering: "what if I built a Porsche 550 Spyder replica?"
And since then I've been considering a few things like suspensions, engine, gearbox, interior and, of course, aerodynamics.
The first thing I think I have to think about is the chassis.
The chassis design is influenced by the engine to be used and the suspension i guess.
In the original car the engine was air cooled, and I think the suspension was like the one used in the "Type 1" in the front, and a "de Dion" in the rear.
First I don't really like the "de Dion" suspension for a city car, but I also don't know which is the best for this scenario (a city car, to be used sometimes in long road travels - 3h or so).
Second, I pretend to use a water cooled engine. Where would the radiator go then?
There's a company here in Brazil which makes replicas of the 550.
They have two options for the chassis: air cooled, with the infamous de Dion; and a water cooled version, with "independent suspension" (according to the guy, based on the Gol's (a simpler and cheaper version of the Golf) rear suspension). The problem with this chassis is that the radiator goes where the extra tire used to go, and the extra tire goes in the front (he sent me a few pictures which I can post later).
The problem with this setup is that the underbody of the car is flat from the front to the part of the engine. At the part of the engine, it's open because of the radiator, making it kinda hard to make a flat underbody with a splitter.
So I've been considering putting the radiator in the front part of the car. There's a small "grill" on the front, and from some pictures you can see there's a hollow place which I don't know what it's used for, and maybe the radiator could go in there.
Here are a few images:
Here you can see the underbody from a replica, but I don't know who makes them, I just think it's as close to the original as possible. The exhaust pipes would go in those "splitter-like hollow spaces".
The water cooled chassis from the http://www.autoclassics.com
wouldn't have that "splitter like" part, it would just be open.
The hollow part in the front which I don't know what it's used for. I also don't know if the replicas available to me around here in Brazil have that part like that.
Images are from the great http://www.type550.com
, I hope he doesn't mind I used them here. :S
Also, for a flat underbody with a splitter to work as expected, would I need side skirts? Notice the design of the car doesn't allow for sideskirts without making it weird.
Well that's it for now.
Thank you all for your time!