Useable downforce

[Raptor]

Now nobody laugh at me here but as I said I was thinking about the same things but was going to attack it from a different angle. I was going to see if I could obtain a trunk and completely re-work the shape and experiment with fins and such. The thought of a front wing never really got serious consideration because the frame would have to be extended which would throw off the CG. I was also considering creating undercarriage channels to create better ground effect. A small rear spoiler would also be implemented for balance purposes, one that you could adjust to some degree.

See, this is what happens when you can't sleep at night and your mind starts going in different directions! I'm still thinking about doing it; might just be fun!

 

[altonk]

Raptor,

my goal is better handling in the fast sweepers.
the slower tight corners are going to be hard to generate down force.

the typical distribution of downforce in a modern race car is evenly divided between the front wing , rear wing and diffuser.

I am trying the rear wing first as it is the easiest to implement.

Next is the front wing. I am going to use some carbon fiber tie rods thru the trunk to mount the wing.


last is the diffuser I am not as hopeful here as I have to leave enough ground clearance for street use.

I may use flexible skirts that i can replace when worn colin chapman style.

 

[altonk]

I am willing to sacrifice about 20 mph in top end to get it.
I don't get much over 100 often just not practical where i ride.

 

[altonk]

here is a pic of the wing

36" wide 15" chord

if this works well I may make my own endplates and buils a dual element version

 

[Raptor]

here is a pic of the wing

36" wide 15" chord

if this works well I may make my own endplates and buils a dual element version

That's wild dude! Out of all the wings shown on the site there, this is the one I envisioned you going with. You mentioned multi-element which these plates would certainly handle.

In my case at first I was thinking more about top-end than cornering, as there are some places where you can really let the Spyder run free. But I started having too much fun doing the technical stuff cornering and my focus kind of changed. I'm not saying you can't have both; it just seems like there should be a focus on one element and the other can either benefit slightly or even suffer slightly without much consiquence.

Interesting thought on the front wing. I Just wonder if you will have enough room to implement a system that will work effectively without hurting cooling too much.

I agreee on the diffuser as well. There isn't much one can do in the rear becacuse of the rear tire configuration, so the alternative does lend itself to possible ground clearence issues. But I like your thinking as to how you will approach that part. It just may work!

At any rate, some might find this strange but frankly I'm rather excited for you. You are really taking this on and I respect that. :thumbup: So keep on and keep us posted!

 

[altonk]

A few years ago I was shifter kart racing in a class that allowed aero
We got some pretty good results

 

[altonk]

Another reason for rear downforce - high speed braking

I am going to put a push button over ride on the pillion switch

Some one here said it pushes the brake bias to the rear

With the extra bias and down force the rear will generate more braking force at speed before abs kicks in.


So on entry of a corner you do most of your braking early at speed pushing the bias button then trail brake to the apex

You can't carry that much more speed into the corner but your entry is faster

 

[altonk]

I put on the kewlmetal luggage rack today to mount the wing
It is solid and well Engineered

I also put a bestem carbon fiber rear fender liner on too

I changed to dzus connectors too

Pics tomorrow

The carbon fiber is well made and I have side pods ordered

Gonna go all carbon

 

[altonk]

new pics

some progress

 

[Raptor]

some progress

Dude this amazing stuff. the brake bias shift is brilliant! I've been thinking about how to segragate the rear from the front so that you can trail brake with much more efficently. I was going to use a lever for the front and use the pedal for the back. But a bias adjustment works just as well.

I also think the base plate will accept the wing most efficiently. What is the material choice for the vertical wing mounts? Of course we all want carbon fibre or titanium! Let me know what you have chosen. You have peaked my interest!

 

[altonk]

I'm gonna put a mode switch on the console so I can use the starter switch to change the bias