JoeyAnderson

iTrader: (20)

Having a friendly arguement with a buddy, and he thinks that it's good for the rear to squat out of the hole. From what I've read on here, I disagreed and said that I don't want my rear to squat - I want all the transferred weight to go straight the pavement, and not get lost in translation between the body and rear end.

Are there any other reasons why it is good to set these cars up so loose in the front and so stiff in the rear?

Sorry for the newb question, I've got the search button working overtime.

Pro Stock John

iTrader: (34)

All the time your car is squatting is wasted, you could already be moving forward. Sometimes when the car squats it's just moving back or up, not forward. Can be a big difference in 60ft.

12secSS

iTrader: (30)

What many people think is that as the body rolls over to the passenger's side it is applying force down on the tire, due to the engine torqueing as well. Actually what is happening is that the front end is coming up and tilting on the axis created by the front pass tire and the rear driver's side tire, what then happens is all the weight is placed on the rear passenger tires coil and shock setup. If this setup (RR) is not stiff enough to support the extra load, it will compress absorbing the load ... much like an overloaded 1/2 ton truck with a tired and old suspension. This is not making for traction. What you want is the axle (rear suspension) to react to the initial hit from the torque being applied to it, which causes the axle to literally pound the pavement hard.

See example:

Video
http://www.jenibellaracing.com/Videos/SCS2005-02.wmv

This effect causes the tires to really bite hard into the pavement, which can result in wheelstands, but also better 60's. The other way, squating causes only on tire to really bite hard while the other is unloaded and pulled up into the body, causing a loss of traction. You want the body to lift up off of the axle at launch, to help stick the tire down.

FANTAZ28

iTrader: (2)

no offence 12secss, but i watched the video and the car spun the tires, when the car lifts up like a truck when taking off its gonna cause it to spin... (see video). you want some squat but not A LOT of squat.

CrawlinWS6

iTrader: (41)

Ya, but you don't see the rearend sqwatting on take off. Which is what ou are looking to achieve.

FANTAZ28

iTrader: (2)

hey what do i know, i mean i got a car with all stock spirngs, stock sway bar, stock rear shocks that 60 fts 1.40 on hp at 3200lbs.......

Bitemark46

I've always been taught that squating unloads the pressure on the rear tires and you get the old "hook and spin" characteristic. Having no squat keeps the contact patch firmly pressed against the ground.

Here's an analogy that might help..... or hurt.

Let's say you jump out of a 10ft tree. When you land, why do you bend your knees? To soften the impact right? Now jump out and keep your knees stiff. Which would have more pressure per sq inch? Aside from your knees blowing out there is way more pressure on your feet keeping your knees stiff. Same concept with the rear suspension.

ONYOURLS1- not trying to discredit your achievements but that 1.40 could be a 1.36-1.38

I don't have stock suspension parts on my car but I'm able to pull low 1.5's w/ weighing at 3225 w/ driver and only 294rwtq and my rear suspension is stiff as a board. -Mark
-Mark

MADMAN

iTrader: (4)

Girls squat race cars do not.

12secSS

iTrader: (30)

FANTAZ28

iTrader: (2)

we arent takling about ALOT of squat... but saying NO squat on a low hp car is diffrent. we arent talking about 8sec cars here! for slower street cars * I think* that you need some squat! when i say some i dont mean like an s10 with a 50ft enlcosed hooked up to it!

Shon Herron

iTrader: (25)

I have the lowest HP car you can get and do not squat and pull mid 1.5s.
You want the front of the car to lift and the rear to stay put and force the tires to the ground.
Do not waiste any motion, make it all count.

Vids all over the place, search for my screen name.....

jshiver

iTrader: (6)

So, I guess 150 lb springs in the rear is not a good idea?

FANTAZ28

iTrader: (2)

what im trying to say is i would have little squat than the rearend lift up like in the video... but again thats me, and thats what i have the best results with

Shon Herron

iTrader: (25)

stock springs/shocks on my car (in the rear). I contribute the hook up all to the Spohn Drag bar and QA1 front suspension with the Spohn TA.

FANTAZ28

iTrader: (2)

i also run rear springs and shocks...

CAT3

iTrader: (9)

I've tried getting the rear as stiff as possible before spinning too much.. This was my best run, http://www.paradisecruisers.com/vide...ie%2001.28.wmv although with the 26 ET Streets, she spun pretty good beyond the 60'.

Bitemark46

Don't know about F-bodys but on mustangs the stock shocks are about a 50/50 rate which is what you want. Alot of guys actually keep the stock springs and struts.

ONYOURLS1- When you see the rear lift that's actually meaning that it's pushing down on the rear tires (obviously). All the mini tubbed cars or any cars w/ a ladder bar style setup I have seen lifted the rear. I got a video here somewhere and the camara is right at my drivers side tire. It shows no squat. But if you want squat, it may work for you. How is your weight transfer? What's your pinion angle at? -Mark

93LS1RX7

iTrader: (8)

Huh?

You are softening the impact on your knees not your feet. The force is exactly the same PSI. I think your example doesnt really relate to the topic.

Moparnos (The SLP Guy)

iTrader: (55)

this man pretty much said it.

Mike TexaSS

iTrader: (2)

Soften the compression setting on the shock if you're spinning past the 60'.