30 replies to this topic

[Cookies220]

I know a couple of peeps on here were having a go at making a full width splitter. Anyone made one that they can now offer to the rest of us who are too lazy to make their own?

[VXT Tim]

Isn't there one in the group buy room?

[Paulus H]

Mmm how would one define decent....

There are a few factors. Does it help generate more grip. Does it effect the balance of the car. Does it rip/not rip the front clam off or splinter when you go over a speed bump. Does it look cool?

I would be all for one of these if it helped with front end grip. However I have a feeling that if anything it would at best (if there was any effect at all) slightly increase the total front and rear downforce.

I certainly would not want to fit sill extensions to make the most of the splitter.

Paul

[VXT Tim]

http://www.vx220.org...tter-group-buy/ Link to what appears to be a very popular front splitter.

[Paulus H]

Interesting, I wonder if anyone knows if it has any aerodynamic effect?? Paul

[Nev]

I doubt it would have much influence, 1 or inches of material can't compensate much for poor aerodynamics It looks nice though. Might be better spending you money on brake pads or handling.

Edited by Nev, 30 January 2011 - 08:57 AM.

[Cookies220]

Just seen the one in the group buy (cheers Robin). Looks pretty

[cs_]

http://www.vx220.org...tter-group-buy/

Link to what appears to be a very popular front splitter.

in fact, this splitter is still in a first group buy in the german VX boards, so I would say, it is not really popular yet. it's a brandnew part.

I drove the original VX and since 2006 I had two different front splitters mounted. I would not drive without. From my experience a well designed front splitter together with an even well designed rear diffuser are the real deal if it comes to higher speeds, they significantly increase high speed stability. with the original aerodynamics the car felt very unstable both on front and rear axle doing 120mph or more. long highway bends turned out to be freaking, several times I went through moments thinking I will lose the rear end. After the upgrade to the first splitter from AK Motorsport and a carbon diffuser from Regelin / VX-Performance I had an absolutely new car in matter of high speed stability. I can drive 160+mph and the car sticks to the road. even if there are ground waves / bumps there is not one problem, you can literally feel the car being sucked back to ground, following the tarmac very sharp and precise.
of course these modifications improve trackday performance in the same way.

owning a VX, first things to do are wheels, suspension and aerodynamics, because all these thing are crap in the original VX. you can get so much more out of the car doing these modifications, you will not believe it until you experience it by yourself.

these are my two splitters I had/have on the VX:


2006-2010 - Regelin carbon read diffuser + AK Motorsport front splitter (originally created for a Subaru WRX)


2011+ - Maintools (ex Dempert, ex Regelin) front splitter + RaceStyler aluminium rear diffuser

the 2011 setup is not tested yet but I am very convinced it will be a further improvement:
- the front splitter is mounted absolutely bulletproof, much better than the AK, it turns out to be a part of the front clam without any openings or slits where air my press in
- the underfloor is now an even aluminium plane right from the front end to the outer end of the diffuser, no gaps, no steps, absolutely even
- the diffuser made from aluminium is immune to the heat radiation emitted from the catalyst which is a major topic if you have removed the rear part of the underfloor replacing it with the diffuser for cooling purposes. had my carbon diffuser damaged from the emitted heat and was forced to go for aluminium as a solution

so in a nutshell: splitter and diffuser = great improvement in terms of downforce

Edited by cs_, 30 January 2011 - 09:38 AM.

[luke.]

What wheels are they cs? They are pretty much the only other wheels I like compared to compomotive 5 spokes

[cs_]

these are ATS DTC wheels, I would say 50% of all VXs in Germany stand on these. very light parts. I like the look and they behave fantastic. there are regular group buys for these wheels. some even hate them only because almost everyone else drives them already.

[robin]

what sort of price do the wheels sell for on the group buys?

[Nev]

CS_, you say 'well designed', but what genuine design and testing went into this? Any wind tunnel testing?

[KurtVerbose]

That's a fab looking car, and I've had vx-performance.de recommended to me by a German Speedster owner.Do you have certification available for any of these modifications? I can imagine the Swiss MOT guy just having a laugh.

[cs_]

I'll have to admit, not everything is stricktly legal with this car (but most of it indeed is). in case of the splitter the AK branded was made legal, registered for the car. the thing is: no one really knows these cars. so the new splitter has just become a new type label, thermoprint on metal sticker, quite professional looking. if I wanted, I could get it registered too. for almost any part from the aftermarket there is some "referee" (we call the "TUEV-Gutachter") that will give you some positive technical report which is the base for a registration in the car documents. @Nev with "well designed" I mean it seems very well thought, it fits like a glove, the mounting is easy and sturdy and the quality of material seems very good. for the aerodynamics it comes down to my own experience. like I said, the new splitter is not tested by me yet, but I would think hundreds of cars have mounted it. and looking at it, I am sure it will do the job. why a wind tunnel? that would be shooting on bird with cannons I think. everything that produces downforce will cost you an amount of usable horsepower. thisway you have to find a compromise between output and stability. I have enough output out of the engine. and the stability is what I can feel driving high speeds. I think anyone who drives that kind of car should be able not to rely to some tunnel testing. but on his own rear end feeling what the car does. the most important measuring equipment, I think.

[Cookies220]

Is it likely to shatter if you hit a speed bump too fast. I'd hate to have to buy a whole new splitter Ideally, you'd want the 'plank' to be separate so you could replace it.

[cs_]

when I had the small wheels mounted (205/40R17 on front) I had to choose the gas stations by their driveway. only the flat ones could be accessed. speed bumps strictly had to be avoided. if necessary, made a u-turn and drive somewhere else. car had only 8 cm ground clearance way back then. yet I have bigger wheels mounted (215/45R17 on front) giving 11 cm clearance. car drives better and no more problems with any driveway. I mean, OK, the splitter gives you a bit less clearance beneath the clam, but the usual aftermarket suspension many drive poses similar problems. nevertheless would I want the original suspension back. looked like a station wagon and drove like a rattletrap. this is a sportscar. has to be close to the ground.

[2.2_na]

I had to choose the gas stations by their driveway. only the flat ones could be accessed. speed bumps strictly had to be avoided.

As I have brushed the top of a speed hump with my front number plate before, I end up doing that anyway.
Some petrol stations with a short & steep slope leading on to their forecourt ...I just slow down and drive past!

Speed humps seem to be unavoidable though (in London side roads - they are everywhere!).

[palmer]

http://www.ms-edel-c.../shop_frame.htm

[rapidos]

Which one is the best according to you ?
version 1 :


version 2 :

version 3 :

version 4 :

version 5:

Personal drawing welcome

[techieboy]

Version 3 for me.