Can this be right
Can this be right
Author
Discussion

bugsy

Original Poster:

1,371 posts

260 months

Tuesday 29th March 2005
quotequote all
Just spoke to Gaz and they are telling me that the S series should have 400lb springs on the back and 350lb on the front, this contradicts what I have seen on the forums, ie; these should be the other way round.

gefopsman

260 posts

263 months

Tuesday 29th March 2005
quotequote all


Having just come into some funds I was about to invest in some front dampers and springs. I was thinking 350 front and 300 rear.

I reckon Gaz have made a mistake as so many have posted on here that it is the other way around.

ps. When are you looking to take delivery of your new tyres.

M@H

11,298 posts

296 months

Tuesday 29th March 2005
quotequote all
..the other way round ..the car weighting is roughly 55% front 45% rear.

Cheers
Matt

>> Edited by M@H on Tuesday 29th March 11:06

Hoover33

5,993 posts

266 months

Tuesday 29th March 2005
quotequote all
I am running 300lbs on the front and 340lbs on the rear.

Initialy I was not happy with cars handling until Austec had a little fettle with it and the lazer alignment.

Just playing around with damper settings to see what they do.... apart from that

The higher rated at the front and lesser at the back from what I recall has been recomended by HarryW and Jools..... both of which from what I gather have spent alot time playing around with suspension set-ups on their cars whilst honning around tracks.... so they are probably right.

bugsy

Original Poster:

1,371 posts

260 months

Tuesday 29th March 2005
quotequote all
gefopsman said:


Having just come into some funds I was about to invest in some front dampers and springs. I was thinking 350 front and 300 rear.

I reckon Gaz have made a mistake as so many have posted on here that it is the other way around.

ps. When are you looking to take delivery of your new tyres.


YHM

HarryW

15,862 posts

293 months

Tuesday 29th March 2005
quotequote all
I can not say I have been one of the people setting the path for suspension bits for the S. Yes Joolz does play a lot with his and I sourced my bits with major advice from him . However i do not pretend to understand whats really going on though .
I would say PeterH along with Joolz understand whats what with settings for the S, me I'm just a punter for the finished article .
Only thing I would add to the stiffer springs on the front is the effective wheel rate. If you look at the angle of the spring/shocks away from the vertical you will understand.

Harry

bugsy

Original Poster:

1,371 posts

260 months

Tuesday 29th March 2005
quotequote all
Had a quote from my local company for £570 plus the very awful tax, how does that sound for the full monty Gaz shocks, springs and fitting.

Mind you they are talking fast road setup, 500lb and 400lb springs, I wonder if my teeth will stay intact.

If I'm right,thats what some companies want for supply only!

>> Edited by bugsy on Tuesday 29th March 18:01

GreenV8S

30,999 posts

308 months

Tuesday 29th March 2005
quotequote all
For this layout, you want the front suspension stiffer than the rear, measured at the wheel.

It's important to distinguish between spring rates and wheel rates. The S series trailing arm rear suspension has a different leverage to the twin wishbone front suspension. As a result, the wheel rate at the rear is roughly a third of the spring rate, and the wheel rate at the front is roughly half of the spring rate.

So, even if you fit the stiffer springs on the back, the back can end up softer than the front at the wheels.

Having said that, with the spring rates you're talking about I think the rears will still be too hard for the fronts, this will tend to lead to oversteer. If you don't have too much power and are comfortable with a car that steers on the throttle then this may be OK. So this might be OK for an aggressive driver with a V6 under the bonnet. But it probably won't suit a more conservative driver in a V8.

bugsy

Original Poster:

1,371 posts

260 months

Wednesday 30th March 2005
quotequote all
GreenV8S said:
For this layout, you want the front suspension stiffer than the rear, measured at the wheel.

It's important to distinguish between spring rates and wheel rates. The S series trailing arm rear suspension has a different leverage to the twin wishbone front suspension. As a result, the wheel rate at the rear is roughly a third of the spring rate, and the wheel rate at the front is roughly half of the spring rate.

So, even if you fit the stiffer springs on the back, the back can end up softer than the front at the wheels.

Having said that, with the spring rates you're talking about I think the rears will still be too hard for the fronts, this will tend to lead to oversteer. If you don't have too much power and are comfortable with a car that steers on the throttle then this may be OK. So this might be OK for an aggressive driver with a V6 under the bonnet. But it probably won't suit a more conservative driver in a V8.


Ok how about 400lb on the front and 350lb on the back?

KentishS2

15,169 posts

258 months

Wednesday 30th March 2005
quotequote all
GreenV8S said:

If you don't have too much power and are comfortable with a car that steers on the throttle then this may be OK. So this might be OK for an aggressive driver with a V6 under the bonnet.


Cheeky begger!


And bugsy, what the hell are you doing posting on here at 5am, get out there and polish that car