151 replies to this topic

[siztenboots]

its a mclaren senna , some bits I like , but not so keen on the massive front end overhang.

but it shows you can have a huge sidepod , and I do like your angular cardboard design at the moment.

[MAXR]

They’re all starting to look the same to me. It could have been a Ferrari. They tend to bring out limited editions for the ultra rich and famous.

[The Batman]

They’re all starting to look the same to me. It could have been a Ferrari. They tend to bring out limited editions for the ultra rich and famous.

 

how many you got? 12?

[MAXR]

Photos of the empty sill cavity that could be utilised for cold air feed.

 

 

 

 

 

 

 

 

 

 

Passenger side done in 1.5 hours. 

 

 

 

 

 

 

 

 

 

 

 

New door mirror trial. Looks nice but needs moving up as it's tilting down on the door curvature. I had to remove the door safety bar to fit the mirror bracket. So I couldn't be bothered to remove it all again to move it up.

 

 

 

 

 

 

 

[siztenboots]

door mirror looks massive

[MAXR]

They're not massive, but they are an unusual shape, quite deep and some angles they do look deceptively large. I wanted bigger mirrors as I'll have no rear visibility due to the coupe back and the VX ones are too small and naff looking. I also wanted electric mirrors for adjustment when belted in.

[The Batman]

its defo got big ears now

 

but i suppose thats a good thing and means you can move out the way quicker when you see me in your human size mirrors

[Dave E]

I’m definitely attending the next td the both of you’re on

Max, loving the side, there are some really good ideas there and the rear also has some good lateral thinking on the coupe idea

Are you going to run a wing or spoiler as you’ll be generating lift off the coupe back.

Edited by Dave E, 09 September 2018 - 09:59 PM.

[The Batman]

Even if it’s that Norwich track?

[MAXR]

its defo got big ears now

but i suppose thats a good thing and means you can move out the way quicker when you see me in your human size mirrors

F.O.😡 It's the camera angle....Besides, your car will expire again if it goes above 80mph, it's just not used to it!

[MAXR]

I’m definitely attending the next td the both of you’re on

Max, loving the side, there are some really good ideas there and the rear also has some good lateral thinking on the coupe idea

Are you going to run a wing or spoiler as you’ll be generating lift off the coupe back.

Ah, now you're asking. I'm going to use the crashbox in the front to hopefully generate additional downforce with a couple of scoops. I may also extend the canards/ chin pertrusions on the Audi front as the air will pass into the air ducts. At sides, the air intakes will have very noticeable curved areas to direct air up and into the engine bay. At the rear, I may make and fit a more pronounced tubby rear boot spoiler and try and also get the air from the underside to pass over a diffuser wing fitted low down in the new back end.

I think the air will flow through the rear clam and out the lights vent ok. But, I have no idea how the turbulent air will effect the situation. Im doing a bit of reading at the moment on the subject, but clearly it's a very complicated situation to not only understand but to implement.

...I will get Joe to follow me on track filming whilst I drive with smoke bombs strapped on the sides and the underside. Oh, I sh*t, Joe doesn't drive fast enough to keep up! I'll just have to use my wife instead!😂

[MAXR]

As mentioned before, the door mirrors are off a 2018 Seat Leon. Now, VW would have extensively tested all their car in a wind tunnels, which includes these not large door mirrors.

As for the Lotus VX220 OEM door mirrors, the nearest they've been to a wind tunnel is when Trevor carried a box of VX door mirrors from the parts shed to the assembly shed on a particularly windy day.

[MAXR]

Joe you sh*t! get rid of that title from above my photo! It's a blatant lie and nobody will believe it anyway, cause they've seen your videos!

[The Batman]

Hahahahahahahaha

[Dave E]

I’m definitely attending the next td the both of you’re on

Max, loving the side, there are some really good ideas there and the rear also has some good lateral thinking on the coupe idea

Are you going to run a wing or spoiler as you’ll be generating lift off the coupe back.

At the rear, I may make and fit a more pronounced tubby rear boot spoiler and try and also get the air from the underside to pass over a diffuser wing fitted low down in the new back end

Max, I’ve no training but aerodynamics is something that I’ve been looking into recently so take all this with a pinch of salt, I’d love for someone with actual knowledge to share their opinions on what your doing and correct any misunderstandings.

If cooling is your primary goal I’d take the sill air and channel it through the engine bay then exit out of the rear clam, away from the diffuser as it will lessen the pressure difference making it less effective, above the number plate where you used to have the round holes. This would also vent into the low pressure area between diffuser and wing/spoiler reducing drag.

Also taking air from elsewhere to go over the wing will disrupt the clean airflow you’ve created by fitting the coupe cover, it may help but without a wind tunnel I can’t see how you could “tune” the direction, volume and wing shap to utilise the extra flow, you might do more harm than good. The clean air you get with the coupe would be more predictable without this additional variable. Speaking of which, fitting some vortex generator on the roll cover would energise the airflow and help keep it attached, increasing wing efficiency and again reducing drag.

[MAXR]

Dave,

 

I will be utilising the sills, it's a no-brainer. As you said, Aerodynamics is a very complex science and I can't claim I know much apart from a basic understanding.

 

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I had a request to modify the arches to allow wider tyres. Unfortunately, I can't modify the entire car to meet peoples individual requirements. However, I had a quick look (over an hour!) and came up with this option, which I may implement on my car as the more I look at my car, the more I think that the front & rear could do with widening. 

 

 

All I've done is to space out the front wheel arch be moving out the front clam by 35mm per side. I've always disliked the front wings, which look very flat sided. Sticking on plastic wheel arches won't give the same look as what I've come up with and won't look OEM. As I'm grafting on a new front & rear on the VX, now is the time to do it. A similar procedure will be done on the back, but possibly by cutting along the rear arch flared crease, around the rear light chamfer &  along the corner edge. I will space it out by approx 40mm per side.

 

As I am fitting new outer sills, this will blend into the rear of the front arch nicely.

 

Anyway, more thought needs to be done before I commit with the Dremel.

 

 

 

 

 

 

 

 

 

 

 

 

 

[CHILL Gone DUTCH]

[quote name="MAXR" post="1962169" timestamp="
and try and also get the air from the underside to pass over a diffuser wing fitted low down in the new back end.
[/quote]

I've been running my diffuser like this last year
My plan is also to create a diffuser more wing shaped under the car , but you have to be careful about the top surface becoming a lower pressure than the bottom

Do not as straight foraward as you think

[Captain Vimes]

I like the angular side scoops, they suit the vx.

If you’re channeling air, I’d direct some of it on the rear brakes as well as the engine bay. Not sure if this would cause problems with aero though?

[MAXR]

I like the angular side scoops, they suit the vx.

If you’re channeling air, I’d direct some of it on the rear brakes as well as the engine bay. Not sure if this would cause problems with aero though?

With the additional supply of cold air from the sills, I could easily have a smaller corrugated pipe plugged into the back of the sill and directed at the discs.

I will have rear vents, once I graft on the Toyota C-HR lower bumper. Again, I also have no idea about the aero effects caused by hot air exiting the light clusters, bumper vents, underside diffuser with lower wing. But, hopefully the gains from the coupe back improved air flow will offset some of the exiting air concerns.

Chris,

I am fitting a low down wing/ diffuser channelling the underside air over the low wing and onto the finned diffuser above.

I spend far more time formulating a plan than I do doing actual physical work! Lol. But, aerodynamics is not one area I understand and therefore it becomes purely a guessing game. Shame, as it's an interesting science. More often than not, turbulence is generated by well meaning enhancements and not a clean flow. Oh well, I can always use the 'but it looks good" option as a fall back.

[MAXR]

....The pulled out front wing works really well, I think. Mainly due to the wing vent I created earlier, which keeps the front wing looking flush with the front of the door edge. If I didn't have the vent as I have it, it would have create an awkward area. The front of the wing gets nicely dealt with by the new flexible Audi front end which bends and curves to meet the wing in a cohesive aesthetically pleasing way. The big bonus for me, is the way the wing is now not so flat sided, it forms a much more bulbous curve and is more pleasing to my eyes.

...The rear of the headlight clearance is now sorted and headlights facing correctly forward. I am amazed and pleased that The Audi lights have so much mechanical adjustments (3 in total) to align the light beams within the housing and it's so easy. I fired up the lights last night in my garage and it's awesomely easy to adjust with an Allen key.