slate blue

Fair question, Greg stratches head, it started so long ago it is hard to remember but basically improve the lift to drag ratio and do this in a way that is sympathetic to the original design what is a great design of course. So changes by way of enhancement not radical changes like some body kits. No offence intended to those who have those kits on their cars either.

While the thread title has "Side Exhausts" as one of the topics it is no longer a point of interest. I am concentrating on areas that other later road cars have been improved and in general for cars with the same basic layout as ours.

So my wife wants the car drivable again, not much chance of that, my health has been a big issue, the plan when it was conceived was when it was done take it to Europe, she is from the UK and live there for a while take it to the famous tracks in the U.K. and do a few runs around the "Ring".

LEADASS

SHARKS HAVE GILL SLITS!!!! Nice.

slate blue

Sorry my bad

slate blue

Thanks

whatudrivin

None of the pictures are working! =(

slate blue

Quote:

Originally Posted by whatudrivin

None of the pictures are working! =(

Well here is some pics for you.





The above pics were done with epoxy but have now been welded. Below the upper guard vent has also been welded in. The front "marked out vent has not been started but is very interesting. It will be connected to two areas. The front section will connected to the area above the front fog lights in the high pressure zone.

This will lower lift and drive the air over the top side of the guard creating more downforce. The second part of that opening will be connected to the area just in front of the inside tyres. This is to lower the high pressure and reduce turbulence going to the floor. Dive planes will be used on the front splitter help suck away the high pressure air from the other side of the front tyres.

So the front guards will have three separate (4 vents in total) venting points to lower pressure and turbulence which leads to better floor performance.

danglerb

Shouldn't all of those line up, best to keep your ducts in a row.

Bilal928S4

Will you be getting rid of the wheel well and hood liners to make these openings work?

LostInSpace

Looks great Greg, pleased to see the project (and you) back in action :thumb up:

Is the bonnet vent an aftermarket part that you've fitted or have you cut into the bonnet and shaped the rest?

slate blue

Hi Ryan,

The bonnet is hand rolled on my English wheel. It has not been welded in at present and is pop riveted in place whereas the vents in the guards have been welded. None of the parts are commercially available but the lower vents in the guards are Ferrari 550 and the upper ones are from the 599. All the parts need to be modified moderately to fit. e.g the upper vents are designed and you will see this more clearly as the project evolves, to line up with the line around the front of the bonnet and guards. That is the same radius of curve as the front end where the beading runs. This ties in the design.

As to how to permanently fit the bonnet vent, that is not decided, I think seem welding will cause too much distortion that I may not be able to sort out as there is little curve in that bonnet which makes it more difficult. The solution may be spot welding and JB Weld then paint it. I may go one step further and make it from CF using that bonnet as the plug. I think when you see both the bonnet and the guards finished most will be very happy with the design, I have some tweaking to do but the groundwork is there.

Thanks for the well wishes

slate blue

LoL, I am still working on the design regarding the finalising of the bonnet, the guard design is set and if you look at the position of the ducts you have one to deal with the high pressure air at the front of the tyre, another mid section but in a low pressure area above the guard so it should be efficient. Then you have the final vents at the back of the guard.

I will be consulting an aerodynamicist, with regards to the front splitter/spoiler, flat floor and diffuser and rear wing. He has extensive experience especially in CFD. Should be interesting.

drnick

So your deleting the rub strips?!

slate blue

Yes, while I like the rub strips as I think it breaks up the somewhat slab look of the sides. However since this car will have the vents in the guards and the side skirts it will have enough "going on" down the side of the car.

spooledx2

Any updates on this beast?

slate blue

While in the process of finding a carbon part manufacturer for the intake system, I think it will be affordable to do a bit more in carbon. I suspect either I will have to become heavily involved in the flat floor if that is made from carbon, or I will have to make the part you don't see out of a alloy.

Making the parts in carbon is not that expensive but the tooling and CAD time is quite expensive, those costs are one offs but they are pretty big costs and even with a small run of three sets would greatly lower the costs.

I have a good idea of what I what regarding the front splitter which will have a raised and extended centre section. This allows for ground clearance but it also becomes the car"s mouth and this extra air will feed the floor and diffuser.

The work that has been done is work on fabrication of the headers and organising parts and various parts manufacturers.


You can read about that here;

https://rennlist.com/forums/928-foru...er-thread.html

https://rennlist.com/forums/928-foru...w-headers.html

https://rennlist.com/forums/928-foru...-3-system.html

All the above threads have been updated.

There will also be an aerodynamicist involved in the project, he has been a consultant for a year now. His main work was with CFD in F1. He can model the car and create CAD files for the carbon manufacturer.