Little Red Devil

[VWindahouse]

Sounds really deep and throaty, can't wait to hear it at Happy Laps

Sounds tough as bro!

Too quiet?

Gavin

Haha I blame my prehistoric recording gear. It's a tad bit louder than the clip

Irrespective of if Anth goes with a diffuser at some point, the point I was making previously was that at the expense of less drag, the addition of high velocity, positive pressure into the negative pressure wake of the car would more than likely make the rear of the car unstable and render the wing useless. What I was suggesting was that he explore the addition of a flat floor on the car, with or without a basic diffuser to eliminate the drag issues cause by the rear bumper. I've seen many a Soarer or supra lose their expensive, votex rear bumpers on drag strips due to the drag from the bumper and I've also seen how just covering that area in can solve the issue cheaply, effectively an without the cutting of holes.

Undercar aero tuning does not increase drag and is why so many exotics now no longer sport the garish wings present during the 90's. you can have highly efficient negative lift without the traditional sacrifice of drag caused by wings and spoilers.

Anth I'll try to draw my thoughts up at some stage for you.

Thanks mate, that would be great! Found a thread that goes over under panels for the Golf. It's a bit long and most of it rubbish but I think it's what you may be suggesting

aerodynamics - better feel, increased efficiency - VW GTI Forum / VW Rabbit Forum / VW R32 Forum / VW Golf Forum - Golfmkv.com

[kaanage]

Irrespective of if Anth goes with a diffuser at some point, the point I was making previously was that at the expense of less drag, the addition of high velocity, positive pressure into the negative pressure wake of the car would more than likely make the rear of the car unstable and render the wing useless. What I was suggesting was that he explore the addition of a flat floor on the car, with or without a basic diffuser to eliminate the drag issues cause by the rear bumper. I've seen many a Soarer or supra lose their expensive, votex rear bumpers on drag strips due to the drag from the bumper and I've also seen how just covering that area in can solve the issue cheaply, effectively an without the cutting of holes.

I still find this highly improbable (although everyone seems to have ignored my posts) due to the large separation between the wing and the bumper on the Polo. Look at the picture of the Civic with the massive diffuser and rear wing again - if a hatchback was liable to loose rear wing effectiveness due to repressurising of the wake, as you assert, then that car would show the effects. Anthony's car would be even less prone to be affected since his wing is mounted higher and more forward than the one on the Civic.

Soarers and Supras are completely different since the low angle of the rear window means that airflow can stay largely attached down to the boot lid which is not far above the bumper.

Horses for courses.

[VWindahouse]

Not ignoring you mate, and I agree with your comments regarding the wing completely.

[VWindahouse]

Ok so had a quick look under the car and there are two main area's of concern.

There is a large gap between the plastic panel that runs under the entire mid section of the car on left hand side and the torsion beam. This is where the exhaust snakes around and then over the bar then to the muffler. I guess VW were worried about the heat of the exhaust and left it uncovered.

Then the even bigger and higher cap between the bar and the wheel well. Everywhere else is pretty flat or a flatish transition like from the right hand side plastic underbody section to the fuel tank to the torsion beam so the air can't penetrate along the entire section.

Man I wish I had a hoist.

[gavs]

Little Red Devil

I still find this highly improbable (although everyone seems to have ignored my posts) due to the large separation between the wing and the bumper on the Polo. Look at the picture of the Civic with the massive diffuser and rear wing again - if a hatchback was liable to loose rear wing effectiveness due to repressurising of the wake, as you assert, then that car would show the effects. Anthony's car would be even less prone to be affected since his wing is mounted higher and more forward than the one on the Civic.

Soarers and Supras are completely different since the low angle of the rear window means that airflow can stay largely attached down to the boot lid which is not far above the bumper.

Horses for courses.

Sorry, I really need to learn how to be more clear in what I'm trying to say!

RE the Soarer comment, I was meaning that like Anthony mentioned earlier, the drag reduction he has performed is something that should have been done on these (much) higher powered drag cars because the air under the car was blowing out or even ripping off the rear bumpers until some bright spark thought to cover the area in with a flat piece of plastic, which is stopping the air getting behind the bumper in the first place.

I appreciate you opinion a lot mate as you know but to my mind, if these guys were seriously wanting the best package possible in a time attack car, they wouldn't have bought a civic to begin with because without undercar aero like this: then there is no hope of being able to compete with the evo's etc on an aerodynamic front. There could also be radiators etc behind there as well but to make that design better, I would have just hacked out the entire rear bumper, gone with a flat undercarriage and fitter the biggest damn diffuser I could get in there, then extended it out and lifted the lower edge of the bumper up.

I'm no aerodynamicist, far from it but what I have read countless times is in regard to the aerodynamic in-efficiencies in bluff ended vehicles every other month with what I do for a living, and how to resolve/optimize these flaws...

[seangti]

hi mate. I did renault happy laps last weekend at QR on the clubman circuit. I ran my street tyres which are new Bridgestone RE002. Even though it was happy laps and not sprints I was able to give it a reasonable run whilst not fully committed. With these tyres I was lapping in 71sec flat, with a committed lap I think a 70sec or a high 69sec is reasonable. With the semi-slicks I was mid-to-low 67sec laps. i.e. ~3sec a lap from tyres alone.

As I think you know, I break the track up into sectors almost per corner. 6 sectors on most tracks so I can compare cornering pace. Sector 1, i.e. turn one is where the biggest difference in pace was, I was 1.2 secs slower with street tyres and braking much earlier. Other corners/sectors were roughly 0.3-0.5secs quicker each. Interestingly, g-forces were only marginally higher in comparison, say 0.48g to 0.54g cornering load. Braking was much the same marginal increase. Top speed difference was 3km/h, so only a bee's whisker.

I'm yet look further at the info to compare apex, entry and exit speed to better understand where that time is coming from, but thought I'd share what I've learnt so far.

My point - we need to get some data for you You're spending time on aero, though without a base capability it's near impossible to measure the value of them.

If you're going to happy laps this weekend I can give you my gtech so we can start measuring, if you like.

[VWindahouse]

Too true mate and good idea. Appreciate the loan for sure. Also I've been wondering if we can get together to work out the best shift points for my set up?

Cheers.

[seangti]

Too true mate and good idea. Appreciate the loan for sure. Also I've been wondering if we can get together to work out the best shift points for my set up?

Cheers.

Yup sure. Just need to find a suitable location to stretch 4th gear (6000rpm would be sufficient) to get the 4th and 5th gear over lap. Lakeside could be sufficient, though would need to be 2-up to do that. 2nd and 3rd gear can be done elsewhere and best ran from 2k rpm.

[seangti]

I had the privilege of having a good steer of Anthony's car at Lakeside over the weekend, did about 18 laps. Yikes, insert multiple profanity here...

What a beast, still having a chuckle today. Mighty impressed with it; power, cornering and those brakes. The power is addictive though needs to be balanced as it spins through 3rd at half throttle, haha, the cornering is balanced with some understeer (which I found reasuring given the speed), and the brakes, it just keeps teasing to dive later and later. My car with standard sized rotors averages a maximum of around -0.7g's under braking, these brembo's were over -0.9 with a few -1g dives, and still easily had more in it.

I lapped mostly in 4th and 5th gear, which if doing a committed lap would probably run 4th a lot further down the straight. I did a best 1:08.16s lap, I reckon I could do 1:06's with a clean and committed lap. Much beyond that I wouldn't have pears big enough, haha.

Thanks again Anthony, I owe you

[VWindahouse]

Not at all mate, glad you enjoyed it And I really appreciate the driver tuition. Can't wait to properly try your preferred lines and tip in points.

I thought we were faster than 1:08 but then again you had a 70 odd kilogram weight penalty to cart around

[team_v]

Not at all mate, glad you enjoyed it And I really appreciate the driver tuition. Can't wait to properly try your preferred lines and tip in points.

I thought we were faster than 1:08 but then again you had a 70 odd kilogram weight penalty to cart around

1:08 is pretty good for the amount of traffic and limited speeds we were dealing with.

[seangti]

1:08 is pretty good for the amount of traffic and limited speeds we were dealing with.

Must of been a different event mate, no idea what you're talking about

[VWindahouse]

Well it's with a very heavy heart my Fiance and I have decided to part with the Devil. This is due to a few of the reasons culminating in the decision, such as taking a new job that's only a 10 min walk from home, a pending oversea's wedding and the onset of ankle biters. It was a toss up between Nat's Polo 77TSI and the Devil but the 77TSI has next to no K's on it plus 4 doors so it was the logical choice to keep. I will get a big 4WD or something more family and dog friendly later down the track.

Ok so the Devil won't be available for another 3 weeks but all test drive requests welcome to anyone interested. Plus any questions please call me (PM for mobile number). It's a car that needs to driven to be believed and is a pleasure to drive in all situations. My guess after the new full 3" exhaust system went in is it's putting out about 190fwkw however last dynoed at 174kW and 413Nm.

It's currently done 97***k's and mechanically perfect. It's a real testament to Jimmy and Gavin. It was serviced by VW for the 3 year warranty period and never had an issue not even the gear box. Then Jimmy put his magic and meticulous mark on it there after. I think it's log book was perfect just past the major 100,000k timing belt service that Jimmy did around 60K from memory. Before that he serviced it every 7500k's or so with filter change every time and only and still has only ever had Penrite Enviro oil. Good review here
http://www.animegame.com/cars/Oil%20Tests.pdf

After the 60 or 70k mark Gavin has done all the oil changes never being longer than 9000k's in frequency but not recorded in the log book which I still have and the plugs were replaced every 15000k's. The car will have one more oil, filter and plug change before sold also. Plus has had the factory coil pack recall done. Only thing I will mention is there is a slight knock on the driver side front strut when you go over a bad patch of bitumen and on full lock to the right the tierod hits the swaybar but I think if you raised the front coilovers a bit this would go away.

Only ever and I mean ever had BP 98 in her also. The front tyres have about 60% tread left and the rear honestly look brand new. I also have a brand new EVO tyre I will include in the sale.

It's a 2006 model but wasn't registered until Feb 2007, and has cloth seats with paint protection and a good tint (sorry can't remember the brand).

For a car 6 years old it is in good condition with some usual stone chips in the bonnet and a parking lot scratch along the driver side quarter panel that stops on the door. And the interior is pretty immaculate for it's age too. And here is the current mod list with everything included;

Custom Code Stage III tune

3” cold air feed ducting
Modshack VTDA with custom cold air 3” ducting inlet with K&N pod filter
Custom alloy 3" MAF housing
Custom 3" turbo inlet pipe
Billet Turbo Ko3s Hybrid turbo with ceramic ball bearing conversion with Forge adjustable spring turbo actuator - yellow spring
Forge Motorsport 007P closed loop diverter valve with yellow spring rated 15-23psi
SEAT Sport intercooler - dual pass core
Custom pipe work - 2" hotside, 2.5" coldside to TB
ATP turbo hiflow exhaust manifold HPC coated
Custom stainless steel 3” dump pipe with 4" expansion chamber & Magnaflow 100 CEL catalytic converter
Custom 3" stainless steel catback exhaust with Magnaflow resonator & 6" round muffler with 42DD 4" outlet
Phenolic intake manifold gasket

ECS lightweight crank pulley
42 Draft Design Ultimate catch can with Morosso exhaust valve and PCV delete
SAI Pump, N249 & N112 delete
Wahler 71c thermostat
Genesis II 500cc injectors
Bosch 3 bar FPR
APR high performance in tank fuel pump
42 Draft Design aluminium shift cable bushings
Deka lightweight ETX14 battery 12lbs 5.4kg
Braille aluminum battery mount
NKG BKR7EKT spark plugs
Superpro sports dog bone bush
Vibra-Technics Gearbox mount
Vibra-Technics Engine mount
Audi A3 custom drive shaft
Sachs 228mm duty clutch plate
Sachs clutch pressure plate
ECS 14lbs light weight flywheel

Wiechers steel front strut brace
Ultra Racing front lower control arm brace
Ultra Racing rear lower brace
Ultra Racing middle lower brace
Whiteline adjustable front sway bar 22mm set on hard
Whiteline adjustable rear sway bar 20mm set on hard
Whiteline rear shim kit +3mm toe in reduction
FK AK coilovers
K-MAC front camber & castor adjustable top mounts
Superpro anti-lift poly rear control arm bushes

Brembo 4 pot front brake calipers
Remsa Master HPT front brake pads
DBA 4000 312mm front slotted rotors
Audi TT rear brake calipers
Lucas/TRW rear brake pads
RDA 256x20mm ventilated rear slotted rotors
HEL braided brake lines

Enkei RPF1 17x8, 35ET, 15.5 lbs 7kg
Federal EVO 595 215/40R17

MK5 Golf alloy steering wheel inserts
SWG air vent pod
Prosport Evo electronic boost gauge
Prosport Evo electronic EGT gauge
Prosport Evo electronic air fuel gauge
ANS-420 touch screen double din head unit with GPS

Ford Focus RS bonnet vents
APR Performance GTC-200 48" SCCA Spec. carbon fiber rear wing
Rear bumper valance delete with JMF alloy bumper diffusers

Sharan antenna
Colour coded rear valance
Badgless upper honeycomb grille

Asking $15,200

Cheers,
Ant.

[Lito]

Major sad face

[noone]

Wow... Sad day dude...

Best of luck for the future.