lowering springs

**00 ws6q** · 01-16-2007, 01:56 PM

Anyone tried the vogtland springs ? If so how are they? Does anyone know how they compare to the pro kits?

**Eugenio_SS** · 01-16-2007, 03:44 PM

what is the spring rate ? are they progressive, linear ?
behaviour will be dictated by those specs.

**00 ws6q** · 01-17-2007, 12:47 AM

It did not say if they are progressive or linear. The only specs listed were :
spring pounds per inch front:336-542 lbs/inch
rear:77-228 lbs/inch

working rate front:440-542 lbs/inch

rear:183-228 lbs/inch

I dont know anything about these figures I just want the car to look good and have a good ride. It also said that they lower the car 1.2 inches front and back.
thanks.

**Eugenio_SS** · 01-17-2007, 07:39 AM

Originally Posted by 00 ws6q

It did not say if they are progressive or linear. The only specs listed were :
spring pounds per inch front:336-542 lbs/inch
rear:77-228 lbs/inch

working rate front:440-542 lbs/inch

rear:183-228 lbs/inch

I dont know anything about these figures I just want the car to look good and have a good ride. It also said that they lower the car 1.2 inches front and back.
thanks.

that actually says everything.
that means that the springs are progressive... otherwise the rate would not change with the difference compression position on the spring.
the working rate is based with the vehicule weight @ rest to full compression.
These springs are gonna make the rear too stiff and make the car very tail happy.
with a spring rate ~ 500 in the front, i wouldn't go anything much higher than 150 in the rear.
Basically, you'll be constantly losing traction on the rear of the car.
If anything, i'd go w/ the Strano springs, which are around 550front and 150rear (don't quote me on those #s... basing on memory only)

Then you have to look @ shocks to suit the spring rates.

**01Z28M6** · 01-17-2007, 10:34 AM

I have the Vogtland springs on my 01 Z28. The box says they are progressive and 30% lighter than the factory springs. The coils are smaller in diameter and have the toughest powder coat I've encountered.

The ride is fairly taut and supposed to be 1.2 inches lower but it seems like more than that.

**00 ws6q** · 01-18-2007, 05:19 AM

thanks very much for the info and taking the time to respond.

**hotpart.com** · 01-18-2007, 06:20 AM

These are a handling spring and will stiffen the ride up on your car. In terms on the rear rate; they are designed to help the car rotate so you do not have to run those enormous anti-roll bars other companies encourage you to run. If you take for example a typical aftermarket anti-roll bar and a 150lb spring your wheel rate be higher than a stock rear sway bar and the Vogtland spring rear wheel rate. We do not like using the bigger anti-roll bars because in the rear they tend to lift the inside tire during cornering which will hurt your total grip and really make your corner exit speeds suffer.

**Eugenio_SS** · 01-18-2007, 06:34 AM

Originally Posted by hotpart.com

These are a handling spring and will stiffen the ride up on your car. In terms on the rear rate; they are designed to help the car rotate so you do not have to run those enormous anti-roll bars other companies encourage you to run. If you take for example a typical aftermarket anti-roll bar and a 150lb spring your wheel rate be higher than a stock rear sway bar and the Vogtland spring rear wheel rate. We do not like using the bigger anti-roll bars because in the rear they tend to lift the inside tire during cornering which will hurt your total grip and really make your corner exit speeds suffer.

but those spring rates for the back are too high, even if having the 19mm rear swaybar... you'll simply lose rear traction too easily unless you increase both the spring rate in the front and put a HUGE front sway-bar to compensate. I figure you would need at least another 100lbs/in in the front and at least a 35/36mm front swaybar... for the car to behave better and not just lose rear traction on corners.

**hotpart.com** · 01-18-2007, 07:49 PM

Originally Posted by Eugenio_SS

but those spring rates for the back are too high, even if having the 19mm rear swaybar... you'll simply lose rear traction too easily unless you increase both the spring rate in the front and put a HUGE front sway-bar to compensate. I figure you would need at least another 100lbs/in in the front and at least a 35/36mm front swaybar... for the car to behave better and not just lose rear traction on corners.

These springs are designed to allow for you to rotate the car during cornering without the need of the bigger rear bar. If you want to reduce body roll you can do that with either stiffer springs or larger anti-roll bars. The problem with using a larger anti-roll bar in the rear is cornering ability and corner exit acceleration can suffer from unloading of the inside rear tire. If you increase the wheel rate by using springs and not the anit-roll bar you do not have the problem of pulling the inside rear tire during cornering. Everybody has a different feeling of what the car is doing since everybodies driving styles are different so it will be personal preference on how much wheel rate you want. Good luck on your decision. I will tell you if you just want to lower the car for looks and retain a factory quality ride these are not the springs for you. These are a performance spring designed for handling.

**BitViper** · 01-18-2007, 08:28 PM

Off topic..but in Karting ..this...

because in the rear they tend to lift the inside tire during cornering which will hurt your total grip

is exactly what you want..but that because teh frame of teh kart asct as a big sway bar

**SexOnWheels** · 01-19-2007, 11:18 AM

Originally Posted by 00 ws6q

Anyone tried the vogtland springs ? If so how are they? Does anyone know how they compare to the pro kits?

I know that vogtland produces the Strano Springs from Stranoparts.com.

The rates that Sam has selected sound ideal for our cars but I have yet to see a post from someone who is running them.

**hamburger68** · 01-22-2007, 08:25 AM

Could I run the Vogtland springs with any shocks (KYB gas-a-just for example)? Or would I need something adjustable?
Which shocks are recommendable anyway for a mostly stock daily driver?

**01Z28M6** · 01-22-2007, 10:57 AM

Originally Posted by hamburger68

Could I run the Vogtland springs with any shocks (KYB gas-a-just for example)? Or would I need something adjustable?
Which shocks are recommendable anyway for a mostly stock daily driver?

If you don't mind me throwing in my 2¢, I just replaced the deCarbon shocks with Gabriels inside the Vogtland springs. I can understand me getting booed out of the place but they are better than what they replaced and I'm a straight line driver. I spent so little on the struts that the whole effort of lowering my car cost way less than $300 US. The car hugs the road in a turn and I'm pleased with it all.