I had a full geometry setup today on the Vortx at AB Performance. Very friendly company to deal with, they are top blokes and I would recommend them to anyone.

The car is very stable now and feels planted through the twisties. I had a good drive home.

Here is a couple of pic's of the scales taken whilst corner weighting for proof of wieght.

First is the car with half a tank of fuel. 478 Kg's in full road trim is certainly lighter than I thought it would be.

Description

Next is the car with me in it. 558 Kg's is what I was expecting it to weigh without me in it.

Description

Overall I have had an excellent day and I'm well pleased with the result .

without appearing to be tooo nosey, but how much did it cost you?

Was it just the corner weights done or did u have the front and rear castor /camber etc adjusted as well ?

And Yes I agree it would be nice to know a ballpark figure for it

Kev.....

quote:

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Originally posted by Kev99
Was it just the corner weights done or did u have the front and rear castor /camber etc adjusted as well ?

And Yes I agree it would be nice to know a ballpark figure for it

Kev.....

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Hey Stu,
Thats a good weight hopefuly mine will be around that figure now i don't have the reverse

does it feel more planted on the front
i still feel like i'm chasing the steering a bit, but that could be the slop in the QR

i need mine setting up a bit better, even thou i've had it 4wheel lasered.

shame they are so far, but might be worth a day out

Here is mine.
Quite a bit heavier than yours with me in it. And a ZX12R. 37 L fuel.
Low fuel and no driver itīs 490 kg.






Soren S2

[Edited on 27/3/09 by sorens2]

quote:

---

Originally posted by Johneturbo
Hey Stu,
Thats a good weight hopefuly mine will be around that figure now i don't have the reverse

does it feel more planted on the front
i still feel like i'm chasing the steering a bit, but that could be the slop in the QR

i need mine setting up a bit better, even thou i've had it 4wheel lasered.

shame they are so far, but might be worth a day out

---

andy is a very helpfull chap, i try to encorage everyone to get their car professionally setup as the difference is huge ( for example the manual for our wheel aligner says its acceptable for a car to be within four lines front and rear which can equate to nearly ten mill )

ref weights its a power verses weight dilema, we did an 06 r1 racecar with doorbars petty strutt etc that came in at under 428 with 12 litres of fuel with 8 inch wide slicks you took off the arm bars and petty strutt, and cat and swaped silencer for an alloy one, took off original stainless mnr supplied manifold and replaced with an inconnel manifold it came in at 398 / 399, swap all hex bolts for dome headed cap screws and used k nuts instead of nylocs it could be reduced by quite a bit, but just altering those variables would cost 2k

did you know 15inch to 13 inch wheels can make as much as 14 kilos per car

whereas a dry sumped busa etc may have more beans but carries nearly 10 ltres of oil, has 18 kilos of pipes /oil / fittings / oil cooler plus bracketry and securing fasteners for all and the engine is a lot heavier to start with

although these new modern swing sumps as ab makes are fantastic and save a lot of money / hassle and weight and so much simpler and just a reliable

hope to see you at stoneleigh guys and also at the bash im trying to sort with live music, bar and onsite camping

cheers

marc

[Edited on 27/3/09 by marc n]

You say reduced toe out improved things but wondered what it is set to now?

Actually list of all settings would be of interest and would be interested on people's views on road Vs track settings.

Cheers Greg

can someone help me out by posting a basic trackday/competition suggested setup for an inboard shocked MNR.

Mine has been in for new wishbones and I need a starting point to work from.

Castor angles - any ideas how many washers on each side of each of the rod ends? I seem to remember the washers being arranged to maximise the castor angles - e.g. all of the washers infront of the rod end on the top wishbone mounts and opposite on the bottom.

Front tow - usually a smidgen of negative/ tow out? Any thoughts?

Should be alright for camber between 1 and 1.5 degrees as i am running ACB10's.

I hope to be ready with the new car for the first sprint on the 11th of April at Kames.

Cheers
Paul

setup wise 1 - 1.25 deg negative camber
and 1mm toe in each corner is a good safe setting, tyres 16 psi front 18 rear

best rolling road is tts by far