Notices
Driving Dynamics Driving techniques (trail braking, power slides, donuts, scandinavian flicks, etc), and vehicle dynamics (roll centres, c/g weigh transfer, etc)

Classic geometry settings

Thread Tools
 
Search this Thread
 
Old 25 February 2016, 01:17 PM
  #31  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

So even though the 22/24 ones are available im prob best to just stick with a 22mm rear then

Il prob just do as you say then if its tried and tested

The car does only really get used on a track if that makes any odds
Old 25 February 2016, 01:23 PM
  #32  
InTurbo
Scooby Regular
iTrader: (3)
 
InTurbo's Avatar
 
Join Date: Jan 2013
Location: Oxford
Posts: 739
Likes: 0
Received 0 Likes on 0 Posts
Default

Here is a video of a caterham following a rb320 in the wet with the rear roll bar set on the stiffest setting with oem size front. As you can see it's very oversteer based. Geo and dccd setting also help.

Old 25 February 2016, 01:36 PM
  #33  
InTurbo
Scooby Regular
iTrader: (3)
 
InTurbo's Avatar
 
Join Date: Jan 2013
Location: Oxford
Posts: 739
Likes: 0
Received 0 Likes on 0 Posts
Default

A adjustable rear 22 will give 21,22,23 settings.
If your cars still understeering with tyres correct geo and rear bar then something is wrong.

Obviously once all that is correct it's a case of adjusting dampers and tyres pressures to fine tune.
Old 25 February 2016, 01:42 PM
  #34  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

That rb320 looks properly planted

il get ordering some bits and align as you have said as a start

Cheers

Il report back in due course of my findings!
Old 28 February 2016, 11:41 AM
  #35  
gary77
Scooby Regular
iTrader: (1)
 
gary77's Avatar
 
Join Date: May 2014
Location: fife
Posts: 1,249
Likes: 0
Received 1 Like on 1 Post
Default

Get the best tyres you can afford that's the first step , you could spend thousands on suspension parts but with shot tyres it's never going to grip
Old 29 February 2016, 10:53 AM
  #36  
Ash Webster
Scooby Regular
 
Ash Webster's Avatar
 
Join Date: Dec 2013
Location: Lytham St Annes
Posts: 975
Received 2 Likes on 2 Posts
Default

Originally Posted by d.kenny
That rb320 looks properly planted

il get ordering some bits and align as you have said as a start

Cheers

Il report back in due course of my findings!
personally I prefer Toyo r888 GG


good luck and let us know how you get on!
Old 29 February 2016, 12:01 PM
  #37  
2pot
Scooby Regular
Support Scoobynet!
iTrader: (3)
 
2pot's Avatar
 
Join Date: Feb 2010
Location: Birmingham
Posts: 1,838
Received 90 Likes on 78 Posts
Default

Originally Posted by d.kenny
tyre pressures may of been a bit hard i dont know

think i was 34 on front and 32 at rear
Were those pressures hot or cold. I'd expect 40/42 front (hot) on a road tyre - to help the side-wall/contact patch.

You could adjust turn-in, by running 345mm front 350mm rear.

You'd only need a bigger front bar (with whatever size rear, that gives you the balance you like) if you're using sticky track tyres.

If your not driving on the road much, then, camber-wise:
neg 2.30' front
neg 1 to 1.15' rear
As a starting point.

If you're not using front camber plates?
Use these for some additional negative camber, over the oem adjuster:
https://nke-performance.ecwid.com/#!...egory=11136397

Last edited by 2pot; 29 February 2016 at 12:37 PM.
Old 12 March 2016, 04:05 PM
  #38  
gary77
Scooby Regular
iTrader: (1)
 
gary77's Avatar
 
Join Date: May 2014
Location: fife
Posts: 1,249
Likes: 0
Received 1 Like on 1 Post
Default

Are those alignment settings suitable for a classic ? Is having camber bolts enough to setup a classic
Old 08 April 2016, 01:04 PM
  #39  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

So iv got a pair of anti roll bars

They are 22 front and 24 rear though

Whats the best starting point would you recommend?

Middle hole on back and softest on front?
Old 09 April 2016, 11:11 AM
  #40  
PedroFT
Scooby Regular
iTrader: (1)
 
PedroFT's Avatar
 
Join Date: Sep 2014
Location: Portugal
Posts: 147
Received 4 Likes on 4 Posts
Default

Start with soft on the back, stock on the front.
Old 09 August 2016, 06:52 PM
  #41  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

Soooo

Iv finally started bolting some bits on (its been a while)

Been changing gear box to a 6 speed and going back over these anti roll bars!

I know you advise to inly fit rear but it seems a waste to have a 22mm front st there rotting to or do you all definitely recommend just fitting the rear on its softest to make the front end dart in a bit more?

Any more recommendations on tyres?

Cant seem to get hold of ns2r in soft/track wear so lerhaps going to have to get the federals or ad08r's

Any thoughts?

I wanna spend max really on tyres of about 100 per corner in 215/45 17 trim

Thoughts???
Old 14 August 2016, 07:48 PM
  #42  
PedroFT
Scooby Regular
iTrader: (1)
 
PedroFT's Avatar
 
Join Date: Sep 2014
Location: Portugal
Posts: 147
Received 4 Likes on 4 Posts
Default

If it's for track use only, get a set of Dunlop slicks from Clio cup of ebay (~190£ with postage)
That's what I did... and they managed to hold 41º of ambient temp and 1:30h of track use.
Old 20 October 2016, 07:04 PM
  #43  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

Had alignment done

0.03 toe in on rear 0.06 total toe

1.3 neg camber on rear

0.00 toe on front

2.0 neg on front

4 degrees castor

See how it gos on saturday

Have re050 tyres on

Whiteline 24mm rear arb set on softest

Just have to play with dampers on the day any suggestions for bc's?

Any idea on cold tyre pressures to run aswell?

Cheers

Last edited by d.kenny; 20 October 2016 at 07:05 PM.
Old 20 October 2016, 09:07 PM
  #44  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

That was meant to be on the more track focused setup lol

Gotta be better than it was
Old 21 October 2016, 07:08 AM
  #45  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

What would be more aggressive?

What would i be changing and for what affect?

I have some experience with front wheel drive but nothing else

Cheers
Old 21 October 2016, 03:54 PM
  #46  
drakesnow
Scooby Regular
 
drakesnow's Avatar
 
Join Date: Dec 2012
Location: Down south!
Posts: 146
Likes: 0
Received 0 Likes on 0 Posts
Default

One of the things that intrigues me about running zero toe up front is that it might reduce the looseness steering feel that you get when running a hair of toe in at the front. Of course once you start to push on the car a bit, i.e. on the track into corners hard, that goes away.

I think the settings you have a pretty good, very similar to what I run on my Type R which sees the odd track day and is mainly a road car. The main difference between my set up and yours is that I run a bit of toe in at the front and on the rear, with a slight bias to running a bit more toe in at the rear to settle it.

Let us know how it feels, as I may (on my next set up) go to what you have - with running things set to zero toe on the front axle and just a tiny bit of toe in at the rear.
Old 13 October 2017, 09:30 AM
  #47  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

on the road it seems a bit unsettled and seems to move around a lot if that makes sense...it almost doesnt feel safe lol

i think the suspension is way to hard on it as the only give seems to be in the tyres which is minimal and hence why i think the bc's have got to go to make way for something better...thinking 50mm bilsteins
Old 29 December 2017, 06:31 PM
  #48  
d.kenny
Scooby Regular
Thread Starter
 
d.kenny's Avatar
 
Join Date: Sep 2011
Location: garage
Posts: 590
Likes: 0
Received 1 Like on 1 Post
Default

Put rear arb on middle setting today and still on standard front

gave it about 1.5mm toe in overall on front and when it dried out car was much better

Bc coilovers on pretty much softest all round and i liked how it went

better tyres now i reckon to
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
neilwrx
Wanted
8
04 May 2016 09:33 PM
bugeyedom
General Technical
3
24 January 2016 11:16 AM
Gurj
Suspension
3
31 December 2015 11:41 AM
Porsche911r101
General Technical
9
21 December 2015 11:15 AM
biggraham
Drivetrain
0
20 December 2015 09:09 PM



Quick Reply: Classic geometry settings



All times are GMT +1. The time now is 08:08 PM.