793 replies to this topic

[turbotoaster]

i dont know much about aero but side wind affect F1 cars and they have nothing like the side profile of that rear wing

 

are you not worried about that?

I have thought about, thats why im replacing the wing pylons that are thicker yet have triangular cutouts to keep the weight out of it yet allow side winds to pass through.

 

The end plates are that large because of CFD tests have shown an increase in downforce for hardly any increase in drag, this will allow me to run the wing at a less angle to achieve the same downforce hence a drop in drag.

 

Im unsure how they will fair in side winds at high speed

 

 

 

 

UK law allows such extentions on public roads?

 

 

Errrr....... No; not really.

 

 

The wing extends out further than the car meaning it's not really legal on the road as it could take out a pedestrian.

You need to make yourself an interchangeable smaller wing and splitter for road use.   .

 

They dont extend wider than the rear clam shell, from the pics they might but the rear clam is 1760mm and the wing is 1750mm so in theory if the end plates were rounded off then it should be fine, if you look at the gt3 rs for example you could in theory hit your head on the wing so I just assumed the rules apply if the wing is wider than the widest point of the body.

[Mangham54]

 

i dont know much about aero but side wind affect F1 cars and they have nothing like the side profile of that rear wing

 

are you not worried about that?

I have thought about, thats why im replacing the wing pylons that are thicker yet have triangular cutouts to keep the weight out of it yet allow side winds to pass through.

 

The end plates are that large because of CFD tests have shown an increase in downforce for hardly any increase in drag, this will allow me to run the wing at a less angle to achieve the same downforce hence a drop in drag.

 

Im unsure how they will fair in side winds at high speed

 

 

 

 

UK law allows such extentions on public roads?

 

 

Errrr....... No; not really.

 

 

The wing extends out further than the car meaning it's not really legal on the road as it could take out a pedestrian.

You need to make yourself an interchangeable smaller wing and splitter for road use.   .

 

They dont extend wider than the rear clam shell, from the pics they might but the rear clam is 1760mm and the wing is 1750mm so in theory if the end plates were rounded off then it should be fine, if you look at the gt3 rs for example you could in theory hit your head on the wing so I just assumed the rules apply if the wing is wider than the widest point of the body.

 

 

Easiest way to find out, pop to your local VOSA centre and ask them, or book another MoT.

[Silent Steve]

As Mangham says, I reckon. Best get it checked. If you hit a pedestrian, you'd take their feet off with that front splitter.

 

I assume it's not too difficult to run it without spoilers on the road.

 

Good luck in TA!

 

 

[Mike (Cliffie)]

"[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]The end plates are that large because of CFD tests have shown an increase in downforce for hardly any increase in drag, this will allow me to run the wing at a less angle to achieve the same downforce hence a drop in drag."[/color]

 

[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]Works when above as it stops spill but not so sure you need them under quite as large.[/color]

[dewismotorsport]

Just a thought, how long does the front splitter take to remove? Reason being I can't see that being easy to get on and off a trailer with it in place

[oakmere]

Pretty sure that would not pass for the road as projections have to have minimum radiuses etc but MOT don't check for things like that only SVA tests. Your problem would be if you got pulled by the police or had an accident.

[chris_uk]

"[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]The end plates are that large because of CFD tests have shown an increase in downforce for hardly any increase in drag, this will allow me to run the wing at a less angle to achieve the same downforce hence a drop in drag."[/color]

 

[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]Works when above as it stops spill but not so sure you need them under quite as large.[/color]

 

lemans cars usually have them big enough to connect to the body 

 

 

 

this new design is supposed to make the air stay on the wing longer making the wing more effective. 

 

[TJenkos]

That thing just looks like a death trap. Seriously, how is that even safe?!

[turbotoaster]

"[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]The end plates are that large because of CFD tests have shown an increase in downforce for hardly any increase in drag, this will allow me to run the wing at a less angle to achieve the same downforce hence a drop in drag."[/color]

 

[color=rgb(40,40,40);font-family:helvetica, arial, sans-serif;]Works when above as it stops spill but not so sure you need them under quite as large.[/color]

If you have simons book its in there, have a look, i might be able to take a picture of the page later with the info on, the data was created without raising the endplate higher above the wing, only lower

 

Just a thought, how long does the front splitter take to remove? Reason being I can't see that being easy to get on and off a trailer with it in place

takes a while as its attached in 14 places, when it comes to the trailer we will raise the ride height, im thinking of making some fake suspension, ie just steel box section with holes at each end, simply unbolt the shocks, bolt these on which will raise the ride height up and wheel onto the trailer......this is making the assumption I cant build a trailer that will allow the car on even with very long ramps.

 

The splitter will be about 50mm from the ground in track mode

[turbotoaster]

oh yeh, as the wing uprights are temporary so thats why I havent painted them black I have been working on designing my final ones, these wont be fitted until I can verify that the wing works and is in the correct position.

 

But I came up with something like this, its inspired by Frank 'Ronin' exige from the US, it will put the wing in the same position as currently, just rather more aesthetically

 

My current uprights are 5mm ali thick, this would be 10mm ali and the minimum thickness would be 20mm x 10mm

 

 

What does everyone think, obviously if you know of any other race car where the wing uprights exit the car from behind rather than on top let me know, i looked at the 458 gt3 but they just look a bit flimsy(even though im sure they arnt)

[turbotoaster]

Fitted my completed side skirt today, when the car is at track height it should hopefully make a difference as the bottom of the end fence will be 44mm from the floor




Also a few people have mentioned to me that they think the front splitter wont make it to 50mph never mind 150mph so i decided to stand on the edge to see what happened, bear in mind im 110kg and all the weight is being distributed through 2 feet compared to the downforce which will be more distributed across the surface of it, i would have done this before but never had my mate to take the pics with me at the time

Sorry the quality isnt good, he text them over to me just

Hands out to show im not holding onto anything


The car is still on ramps one side as i was doing the skirt so thats why it looks one side of the splitter is higher than the other


Just to show theres nothing underneath, you can see one of my 3 skid plates I made so they will rub getting out of my drive, under braking on track rather than risking damaging the splitter

[Baron Von Scubadaddy]

Shazam !

[Mangham54]

110kg. Think the next weight saving activity is a dose of Salmonella.

[Mike (Cliffie)]

Good on ya for standing on it.

[mbes2]

A true splitter ! 

 

Good work

[simonlpearce]

Fair play! So long as you don't twat it on a curb or something you should be good.

 

Go pro would get some cracking footage bolted to that too!

Edited by simonlpearce, 01 May 2014 - 12:00 PM.

[turbotoaster]

Good on ya for standing on it.

Well Simon was giving me stick saying it wouldn't stay on at speed so I wanted to prove to myself and him that it would. I was goi.g to ask have you stood on yours to check how strong it is but your only tiny compared to me. The next thing to test strength wise is the rear wing but I'm not 100% sure the best way. I was thinking next time I have the rear clam off I would stand in the subframe then sit on the wing and lift my feet up. It's not the ultimate test as the wing will produce more downforce than that but it might be the simplest way as it will distribute the load over my bottom rather than trying to hang something off the wing which could cause it damage.   

Fair play! So long as you don't twat it on a curb or something you should be good. Go pro would get some cracking footage bolted to that too!

Yeh. That's why I made some skid plates for it to try and stop any damage to it when coming off my driveway kerb. I don't have any plans for bouncing up kerbs with so hopefully it will be fine. Haven't got the money for a go pro but might buy a cheap eBay camera to record my in car track laps so I can see where I'm going wrong

[Mangham54]

I may sound very negative here,not my intention,but in time attack you will need to be prepared to find the splitter digging a trench in gravel, so strength is paramount - as long as it doesn't compromise the clam /chassis.

[Nev]

Very impressive to stand on the splitter and see it is so strong.

[Zoobeef]

Do i get the balls to try that today? I only weigh 70kg too. I'll let you know.