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New Suspension and Setup

matt.v10

New Member
Hi Guys,

I’ve not written too much about my car but after another significant piece of work I’d like to share what I’ve been up to.

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I have been improving my car over the last few years, checking off things that needed working on since buying it, some fairly minor, others slightly more involved. I’ll fill out my car blog at some point covering these rather than putting it all down in this thread.

I have found the Vee’s handling to be a little ‘different’ to other sports cars I’ve driven, at first this translated to entertaining, quirky and risky in a sort of taming the beast kind of feel, overtime this novelty started to wear off and as I got used to the car I drove quicker, had a couple of outings on the Nurburgring and a Pistonheads taster session around Silverstone and my opinion began to evolve. I didn’t have a lot of confidence in the car, I was just guessing when and how hard it would lose grip so stayed well away from the cars limits.

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On the road down fast B roads the car felt floaty, the wheel took a lot of concentration to keep the car on the line you wanted, the most scary bits were faster A roads/ duel carriage ways, again the car was floaty, the steering almost less disconnected from the wheels the higher the speed and if you got to a long corner then the looseness of the car and driver where beyond bearable!

On track the roll in the car was far more pronounced as expected, it felt like a boat in the corners, on both road and track particularly in slower corners there was a lot of understeer followed by the back end just beginning to twitch. I have spun the car twice at low speeds with no harm done as I provoked it in a safe environment to see where the line is and what happens when you go past it.... Verdict: scary.

I believe the above is typical of a standard Phase 2 V6. My car was on dampers refurbished by KONI and set to Renaults recommended geometry, it has been maintained by Scott and had everything it has required and more. I have also driven other Phase 2’s as well as driving many miles in my brothers 2004 car all of which were very similar and no different to my own, if anything slightly worse.

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So enough was enough. KW Variant 3’s were purchased, I had tried to get Ohlins road and tracks but they don’t supply them for my car and was unwilling to take ‘technology risk’ on the RSC’s so the decision was made. The car was put on new Michelin Pilot supersports and solid top mounts from pure motorsport were also purchased.

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Now the best bit… Thursday morning I took the car up to Centre Gravity http://www.centregravity.co.uk after hearing feedback from owners on this forum and from friends who run GT3 RS’s and Cup cars. The guys had set up Clio V6’s before one not too long ago and were not phased at all by the handling characteristics of the car. After two days of setup with me on site for half that time I took the car out for the hand over test drive, I didn’t push the car too hard on unfamiliar roads and with a passenger on board and I was in the mindset that I was going to pick out any fault I could detect. We covered various road types, different corners and I found it hard to describe how that much of a change could be possible! The car was at ease, it felt as if a huge amount of the nervousness of the car had gone, the floaty feeling at high speed had been massively reduced, white knuckles and sweaty palms were replaced with not so much a grin as shock, disbelief that the same car felt like this. Throughout the final test-drive I was traveling around 20mph quicker than before with a lot less input into the car and a much greater feeling of control and therefore confidence.

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I have spent today driving my favourite roads local to me and although not tested the car enough to write my final opinion I have a car that inspires confidence rather than apprehension. The weight of the steering is physically lighter due to the changes in front end Toe and turn is way quicker as well as understeer being reduced. It is a much faster and more importantly a much more fun car to drive now.

The process to get the car up to this standard was lengthy although quicker than I expected, the car was analysed to see where it stood in comparison with Renaults defaults, the dampers were tested/ mapped and I decided I wanted the car set up for fast B road driving with zero wet weather driving. The new kit was fitted, and it was noted a number of times the condition of the car, a big thanks to Scott here, there was no worn suspension components so again no reason for the way I felt about the car other than the stock dampers and Geo set up. The car had ballast put into it and was corner weighted, this was particularly interesting and difficult as there was a disproportionate amount of weight on the drivers side of the car due to the cars being originally engineered as left hand drive cars. The camber, caster, toe etc were all set up and at the front end the geometry is very different to the Default Renault settings. The guys said the car has a lot of potential that Renault were not allowing to be be realised, in other words they deliberately restricted the cars abilities, this could be for a few reasons including customer safety and is not uncommon among sportswear manufacturers.

I have a folder of documentation collated throughout the process which is way above my levels of understanding and two stages of adjustment I can make to the dampers to increase the aggression of the setup further if desired. Other interesting points to note, spacers are not a helpful add on as among other things reduce the polar moment of inertia further effectively making the wheelbase even shorter and making the snap oversteer even faster than it already was, ride height is lower especially at the front to get that dynamic weight forward in the car helping to reduce understeer and improve turn in, braking etc. I believe my car is close to that of a 997GT3 in terms of height and road comfort. When driving around under normal road circumstances I wouldn’t have said there is a change in comfort over stock, and my brief was for no compromise.

Excuse the lengthy write up but this is only scratching the surface, I am speaking in layman’s terms because my technical suspension knowledge is limited. A nice endorsement at the end of Friday was that Chris at Centre Gravity really liked the car and would love one himself!

Thanks for reading.

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Great stuff Matt. Glad that all went well and according to plan.......not to mention the successful end result and how much one learns in the process. :approve:

I am not surprised at the following though. A similar compromise exist in air/oil cooled 911's - designed as LHD, all RHD 911's were compromised, even the seating position in 993's, and that was due to the oil cooling system, and tank being on the right hand side.
"...was a disproportionate amount of weight on the drivers side of the car due to the cars being originally engineered as left hand drive cars"

Did Chris explain where these compromises were on the Vee?

Lastly, not surprised at the verdict on use of spacers either - something I would never have, if I can help it, and certainly not on the front.
 
Cheers Dulan. I was going to write to you to say it was back but you found the thread first. Yes he explained everything. The limitations were my brain remembering it all. There were a number of factors, the obvious one is the steering column and associated gear. There were other factors but I've forgotten. He had to spend a lot of time to get the car balanced across axles to within 20kg. Presumably a right hand drive car is fairly imbalanced to start with.


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matt.v10":1qh5mu6v said:
ther interesting points to note, spacers are not a helpful add on as among other things reduce the polar moment of inertia further effectively making the wheelbase even shorter and making the snap oversteer even faster than it already was
This and Google is going to occupy my evening.
 
Surely low ET wheels (such as phase 2 fronts at ET6) is no different to having spacers though. Its an inherent problem with the car.
To compensate its going to be a wider track and higher ET wheels. Extended wishbones, ET35ish rims, Camber adjusters.
 
No different but the point is the spacers exacerbate the problem. Your going even wider and the wheelbase/ width becomes squarer.
 
Just FYI I believe that the suspension from [mention=77,#000000]arno samimi[/mention] is Ohlins based hence the price!! Just getting bored with waiting and hearing about all the other cars he has developed and fitted out!! :rofl:
 
Sounds promising then. Like you said, I couldn't wait, especially for an unknown.


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Thanks for taking the time to write such a detailed post Matt.

With mods like this its hard sometimes to know if people are hyping something to justify their purchase, but it genuinely comes across as a marked difference, which will be very useful for others considering it. Id love to hear your throughts after a few more miles under the belt.

matt.v10":2ja4xnf2 said:
[post]217817[/post] On the road down fast B roads the car felt floaty, the wheel took a lot of concentration to keep the car on the line you wanted, the most scary bits were faster A roads/ duel carriage ways, again the car was floaty, the steering almost less disconnected from the wheels the higher the speed and if you got to a long corner then the looseness of the car and driver where beyond bearable!

Thats my favourite part of driving the vee :rofl: I must say though, I only feel about 5% of what your describing. Maybe its because im a bit of a slow driver though as i find it more pleasureable than scary or maybe a ph1/ph2 thing.

I felt the exact opposite on track, I couldnt of been more impressed with the car and its stability. It felt alot more sure footed then it did on the road. Its the off cambers, bumps and pot holes that make my palms sweat on the road.
 
Thanks Duncan, your defiantly right about the justification of any purchase and no doubt that must play a part in my opinion although I'd like to think I've tried to be as impartial as possible. I am going to do a back to back on the same roads with Oli's car for further comparison.

Another very valid point you have hit upon is this is very much driver dependent. These handling characteristics become more exposed at higher speeds often above where many would take their cars so by no means would I suggest this is beneficial for everyone. At slower speeds on a normal drive you may feel slightly more stability, quicker and more confident turn in on a roundabout for example.

Chris from centre gravity, myself and a few others on here have all agreed the car is at its best on a B road blast which is why the car has essentially been set up using a template for a Tarmac rally car. I certainly don't use it on track other than small outings like origine RS so this is certainly no track day toy and it would have been pointless setting it up as one.


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Maybe slightly off topic but I nabbed a picture of the offset of the front phase 2 wheel today. ET6, the offset that makes aftermarket wheel makers guffaw!

Comparatively this would be a normal-ish ET42 wheel with a 36mm spacer.

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Looks great. What top mounts did you go for? Assume that requires drilling through the strut tops.
 
Very enjoyable read Matt.

It's very difficult to call these things without being swayed by personnal testimony, but KWv3 seem to get the nod from all quarters.
In general, we're fighting the laws of physics with the Vee's architecture though.
I'm please you recognise fresh sticky Michelin tyres as a must - I'm always perplexed why some folk run ageing or lesser-performing tyres.

The top mounts are intriguing - please eloborate!

:)
 
He did say the top mounts are Pure Motorsport ones.

I have them too on my 182 and cannot fault them. No noises and still solid after approx. 40,000km of city potholes, rough country roads, track ripple strips and kerbs, etc.
 
Thanks guys, enjoyed writing something that may help others on the forum in the future.

Ali I went for Pure Motorsport top mounts, I believe Ktec also do some nice ones. Chris at CG approved of pure motorsport products and aligned them to take their strut brace if ever I wanted to use it. And and quality top mount will require three holes for fixing in each strut tower. I must stress my car has lost no ride comfort in any of the changes I have had and I had no requirement for a comfortable ride, my brief was for the best B road driver the Clio could be on a dry day, with no compromises.

Good point Kett, Chris won't set up the cars if the tyres are not in a good standard. It cost a decent sum for the setup so very little point skimping on tyres.
 
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