Styling Dallara style rear wing

[Pilp]

Hi all, does anyone know where i can get a dallara style rear wing from? Im requiring some downforce!

 

[jimbro1000]

Best bet is hunting around on the racing community websites.

I got lucky and was offered an original by a friend (yes I have a genuine Dallara rear wing - no idea how to fit it but it is there all the same) and I could hardly turn him down.

It is possible to buy rear wings new in almost any pattern you care to mention of course but they really aren't cheap and most seem to favour two or more chords while I assume you are stuck with single chord under the usual MSA regulations.

 

[Pilp]

You lucky lucky boy! A genuine article,would have been rude to turn it down! Im fairly open as to what kind of wing i can fit, obviously there are lots of universal ones available but i want one that actually works!
Am i right in thinking the dallara one followed the line of the roof? As a racer what would be your prefered design for maximum effect?

 

[jimbro1000]

I would prefer one that went *above* the line of the roof but unfortunately regulations don't allow it.

I believe the rules are basically no part can go above the roofline and the wing itself cannot be bigger than half the height of the rear "window" or wider than the car body.

I'd just like to point out by the way that the wing I have is a genuine Dallara wing but not one from a X1/9, it is from one of their single seaters. Not quite the same thing but it will definitely do the job once I figure out how to mount it without messing with the boot.

I'm also looking for a suitable diffuser that I can borrow from another production car and I'm not sure which task is harder...

 

[Pilp]

I think the diffuser would be harder, the wing just needs some nice alloy mounts laser cutting out of 4 or 5mm so its got some rigidity, then make some nice little spreader plates, have them tig'd onto the mounts and away you go! simple really

 

[bludvl_x19]

I would prefer one that went *above* the line of the roof but unfortunately regulations don't allow it.
I believe the rules are basically no part can go above the roofline and the wing itself cannot be bigger than half the height of the rear "window" or wider than the car body.

So you wouldn't be able to use the snorkel that came with the prototipo kit? Interesting...

I'd just like to point out by the way that the wing I have is a genuine Dallara wing but not one from a X1/9, it is from one of their single seaters. Not quite the same thing but it will definitely do the job once I figure out how to mount it without messing with the boot.

Have you got any information on the wing you have? Single/multiple element, car it was designed for etc? Single seaters are my passion Interestingly, I had a quick play with the F2 that shares a shed with my X1/9, the rear wing on that looks good :idea:

I'm also looking for a suitable diffuser that I can borrow from another production car and I'm not sure which task is harder...

How 'serious' looking do you want the diffuser? Any particular reason it has to be from a production car, and you can't make your own?

 

[jimbro1000]

So you wouldn't be able to use the snorkel that came with the prototipo kit? Interesting...

The snorkel isn't a wing so doesn't fall into the same set of rules. Strictly speaking though, the silhouette rules should ban it but because it was used on a road legal "production" car (that never got mass produced) I should be able to bend the rules enough to use it as originally planned.

Have you got any information on the wing you have? Single/multiple element, car it was designed for etc? Single seaters are my passion Interestingly, I had a quick play with the F2 that shares a shed with my X1/9, the rear wing on that looks good :idea:

The wing is a single element design with fairly deep end plates that came from a single seater, the exact model is not known to me as I bought it from an owner of a proper Dallara owner who was experimenting and had opted for a much wider wing from a modern GT car. Sadly my wing isn't as wide as I would like but given the distance between the rear of the cabin and the position the wing would occupy that shouldn't be such an issue (most modern cars would only generate any negative lift from the outer edges hence why they have to be so wide - that is unless the car was designed to use the wing in the first place as these tend to have the airflow to the wing properly integrated in the design process instead of just tacking it on at the end).

I'm currently looking at using the very trailing edge of the boot line for the mounting and ditching my old Abarth lip spoiler as it just complicates things too much. The alternative is to have the wing mounting behind the boot lid which would then mean the wing sits too far back (the wing must sit within the original plan of the vehicle - including bumpers)

How 'serious' looking do you want the diffuser? Any particular reason it has to be from a production car, and you can't make your own?

I was hoping to use a ready made diffuser simply to save on work - at the moment it looks like I will have to do it myself and actually fabricate one from scratch but this is not as simple as it sounds. GRP doesn't lend itself to the sort of shapes a diffuser needs (the vertical strakes would be a nightmare to mould). I don't have access to any decent plastic forming facilities so that goes out as well. Making a diffuser out of other easy to shape materials isn't really going to work well either although I have considered using sheet aluminium (thin to make up the overall diffuser shelf and thicker sheet for the strakes). Even then it won't be particularly simple as it isn't straight lines...

The beauty of a ready made item is that it will at least have approximately the right shape to start with. The best candidate I can find at the moment is the Mk2 Elise/Exige as it comes from a car with very similar proportions and ground clearance. With the Dallara front end on the frontal ground clearance is actually lower than an Elise but without side skirts there will be a fair amount of "spill" from air drawn in from the sides. I might try extending the sills downward a little to try and balance this out but only if it proves to be a problem... There are far bigger headaches on my list of jobs right now!

 

[Pilp]

Having had a chat with my brother who owns his own plastics company, we are going to attempt to fabricate one from polycarbonate, light, immensley strong and he knows how to glue it all together.
Im still looking for a universal wing that might do the job, again from a gt car but im not having any luck

 

[jimbro1000]

Something like this?

http://www.nengun.com/cusco/gt-rear-wing-kit

 

[Pilp]

Kinda like that, need the mountings to be more inboard than those are though, hoping that we can get some 6mm polycarb and form a box from it for strength and mount that through the boot lid floorwith a couple of spreader plates, The adjustment will be underneath the wing itself