30 replies to this topic

[mandarinvx]

How do you like those spring rates on bumpy roads? I am considering GAZ Golds, but I just don't believe that 425/475 is enough of a split considering how different the front and rear axle weights are. (I know that it doesn't directly translate, but still.)

I'm currently running 400/475, if anything I preferred it with the 425's up front

[N17VES]

I would be interested to see the graphs if you get the chance to post them.

Those are VERY soft springs for a VX, I wouldn't even recommend them for the road. For track use on 48's I'm finding the ideal rates on the Europa are 600/850 and for a VX on the road I would suggest a 450/600. Also, one point to note... be careful what you read into the difference in bump/rebound ratio, you don't want to end up using silly rebound levels to control roll, this is the springs job.

Really interested in swapping the springs on mine - Would you still suggest 450/600 as a track setup on a n/a running A048's?

[theolodian]

How do you like those spring rates on bumpy roads? I am considering GAZ Golds, but I just don't believe that 425/475 is enough of a split considering how different the front and rear axle weights are. (I know that it doesn't directly translate, but still.)

I'm currently running 400/475, if anything I preferred it with the 425's up front

Balance wise, or simply how the front rides, or both?

[mandarinvx]

How do you like those spring rates on bumpy roads? I am considering GAZ Golds, but I just don't believe that 425/475 is enough of a split considering how different the front and rear axle weights are. (I know that it doesn't directly translate, but still.)

I'm currently running 400/475, if anything I preferred it with the 425's up front

Balance wise, or simply how the front rides, or both?

More from front end grip

I'm not sure I'm experienced enough to tell a difference in balance over such a short range

[Retset]

I'm on 400/550

How do you like those spring rates on bumpy roads?

No problems on bumpy roads - deals better than standard car with potholes etc. Sometimes it can feel a little 'choppy' down certain fast roads. Hard to describe but almost like a resonant frequency or something. Took Paul from PSR in it recently and he commented that you would never guess how hard the rear springs are.

Have a look at a lap of Snetterton and you will see that there is very little in the way of pitch and roll on these springs.

[SteveA]

Have a look at a lap of Snetterton and you will see that there is very little in the way of pitch and roll on these springs.

Nice lines

[TheHood]

As a fellow Sachs owner I'd like to thank you Steve for sharing this info with everyone - it's very generous of you

I must say I agree entirely with your assessment - way too much initial roll.

I'll be contacting faulkner springs. They get mentioned some times on SELOC and can do all sorts of rates in a 2" ID. Probably not made to the same tight tolernce as Eibach, but I doubt I'll be able to get Ebach for £100ish!

On a related subject, would anybody know what length spring would be required? I could measure the Sachs spring, but I'm not sure if the fact it's progressive will have an impact on the correct length in comparison to a single rate spring.

Edited for spelling

Edited by TheHood, 04 June 2009 - 08:08 PM.

[SteveA]

I got Nitron springs in the end. The cost for everything; Shock & Spring Dyno £55 8 x Bespoke Collets £65 4 Nitron Springs (375F 475R) £165 Delivery £15 was £300. Fitting them this weekend and testing at Cadwell on Wednesday. Will post up results soon after.

[SteveA]

Graphs, for anyone interested.

[Sticky]

I got Nitron springs in the end. The cost for everything;

Shock & Spring Dyno £55
8 x Bespoke Collets £65
4 Nitron Springs (375F 475R) £165
Delivery £15

was £300.

Fitting them this weekend and testing at Cadwell on Wednesday. Will post up results soon after.

Was all that direct from Nitron?

Eibach quoted me £135+vat per spring!!!

[SteveA]

They are not Eibachs they are Nitrons but I was offered Eibachs for £59 a spring.