Corner Weighting? - Page 3

**cantfind1** · 09-06-2010, 05:05 PM

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Originally Posted by Thorney

Simply trying to be informative

Fair enough, you're entitled to your opinion, however getting it 'spot on' as you say will change as you change weight in the car, hence its a pointless exercise unless you maintain that as a constant, for most people even on track day cars thats important to know.

I believe I said that quite clearly, I even made a seperate post about it, the process of geo is abour camber, toe, castor, trail, height, tyre pressure, dampers, spring settings, spring types etc

As you say in your opinion, which of course you are entitled to. However, having founded the CSL Cup, won multiple races in it myself (14 seconds last Donington round is still the largest margin of any win this season or last) and running multiple cars both race race winning I'll rely on our credentials.

Take a look at last year, at Donington Park I ran my car on 6 degrees of negative camber, Dan Stringfellow and the others all took the piss in the paddock saying it looked silly, fast forward to now and the whole grid is running 5-6 degrees from last years 3-4 degrees. Dan was having major issues in handling and set up last season, even considering changing suspension, I did three laps of Brands Hatch and suggested stiffer springs and softer damping (which was the exact opposit to what he'd been told by all the other self appointed 'experts'). Fast forward to now, he's stuck with Nitron who have redeveloped his suspension with guess what? Stiffer springs and softer damping and hes winning straight away (end of last season he didn't beat me once in last 4 races).

I think I have a rough idea what to do.

My point is that corner weighting on a car where the actual chassis weight displacement will not meaningfully change over the course of its use is very much worth doing, but for 99.99% of all track day cars the range of weight variance that the car will undergo even during an average track day makes the process excessive and there are better things to spend money on to get ultimate track times. If you disagree with that then fine, vive la difference but please dont say I'm wrong, we simply dont agree, thats fair enough.

Fair enough, but I think his wins are down to his engine mapping which was done by a friend of mine! Hence why you wanted his car compression checked after he beat you and you couldn't understand why, as you thought it was running to much compression John! lol

I'll stick with my opinion of your company thanks. And yes it is my opinion don't want to put anyone off!

I think you underestimate the knowledge that some people have mate!

Thorney · 09-06-2010, 05:12 PM

Actually that was Jamie Martin at first race at Rockingham, and the less I say about him the better really, sometimes running a large teams means I get things ascribed to me that are in fact said or done by others, comes with the territory really.

I've no idea who you are, but you seem to know Dan, ring him up, in fact ring his dad even, at Brands Hatch he drove my car (now raced by Nick) and he asked me to drive his car, ie he wanted my opinion. He came back after a stint in mine and said how well it handled, especially the kerbs. He asked my opinion on his car and I said it was simply springs too soft and he'd been going stiffer and stiffer on the damping to compensate. All of the other people he'd spoken to (including a few Kumho racers) all agreed with what he was doing when I said that was wrong he was dubious (undestandably I guess) At Oulton Park he drove well (won first race) and his dad came over to us and said "you were right, you're the only people we've spoken to about this who suggested that and you're right, thank you"

Credit has to go to Nitron for working with Dan (and I believe Shirmer) to redevelop the kit but the overall idea, based on three laps of a wet track to go stifer springs and softer damping was me, sorry.

Dan is quick because Dan can drive, he'd be quicker though if he made some changes, which I think he knows but what the hell, if I'm such a nasty person why would I offer to help.....nah far easier to post on a forum.

_Nathan_ · 09-06-2010, 05:20 PM

John - Do you come in each lap and corner weight based upon the fuel used so far? No.

Now take that compromise and expand it a bit, I'm not saying the car will be perfect but then no car is once it has used some fuel etc. The fuel load in my car (and indeed your M3) could vary by 85-90KG if it started with a full tank and ran to the reserve collector then add some driver weight varience on driver change, still worth doing though IMO and I assume you'll still corner weight your e92 for British GT?

You found 0.7 seconds a lap through corner weighting your vx220, if you could find half of that by being half way towards perfect from your starting point then it is worth doing no?

Of course it isn't going to be perfect at all points during the day but then geo won't be either after you've banged it off a load of curbs and people still set that.

Anyway, my opinion is just that, not trying to change your mind just putting another opinion there for people to read, I've not run a race team so that puts me on the back foot anyway. No point in arguing

**cantfind1** · 09-06-2010, 05:28 PM

I have never said you were a nasty person.

All I wanted to know was where to get my car corner weighted in this country near London.

Not a hard request!

I know you do corner weighting but I didn t go to you because of bad experiences in the past and once again I am proved right by your in ability to listen to the customer.

You don t need to know who I am, it doesn t matter. The fact of the matter is that you don't know everything there is to know about these cars, but you assume you do.

Thanks for pointing out that corner weighting is dynamic and that fuel changes during a race and weight changes! wow I never realised.

My simple point is and what Nathan pointed out is that no you will not get it perfect but that doesn't matter, half way is better than way off. Which is what people with road legal track cars are trying to achieve! QED

That's why we spend stupid amounts of money on gaining 20HP, only to find that most of the modifications exhaust, remap, etc etc do bollocks all!

Until you find someone that really knows what they are doing and unfortunately I have not found that person to be you John.

I am out!

Thorney · 09-06-2010, 06:23 PM

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