garagedweller2

:confused:

NHvette

They provide little resistance in the upward stroke - and max on the down.
That way, the car can quickly shift it's weight to the rear during launch.
:seeya

Schmucker

They allow the front end to lift up easier. My dad's '64 with stock suspension, except with 10/90 drag shocks on the front will pull the front end up one foot off the ground. Of course his suspension is now no where near stock.

Crash Dummy

Good synopsis Dave....

There are a couple of other advantages though. Most drag shocks are built with coil-overs(the stagnant springs most cars have) that allow you to change those springs to stiffen or allow more weight transfer in a small amount of time. They also have the advantage of allowing you to load weight from one side of the car to the other(or up down) with a simple spanner wrench in between rounds if you are having launching problems or tire spin.

Turbo-Jet

:iagree:


[Modified by Turbo-Jet, 1:52 AM 1/11/2003]

garagedweller2

what do those #s mean? (90/10) And aren't all shocks are normal cars coil-overs

Schmucker

No, look at a Corvette... rear monoleaf with shocks to control spring return. The 10/90 means 10 lbs of resistances on the up and 90 lbs on the down. Basically when I my dad launches at the strip. The nose just flies up 3 feet, the nose drops as he shifts, when the clutch comes back out the nose flies up a foot of the ground again. By having the 90lbs resistance down it tends to hold the nose up as you go down the track to keep the weight transferred to the rear.

Vetterodder

A shock (or strut) resists upward and downward movement in order offset the movement of the wheel/tire. 90/10, 50/50, etc. refers to the percentage of resistance the shock gives in either direction. A 50/50 shock resists upward movement to the same degree that it resists downward movement. A 90/10 shock has 90% resistance to downward movement but only 10% resistance to upward movement. Keep in mind that, while 90/10's are great for the strip, they are a very poor choice for any other use.

Jason Staley

:iagree:
The 90/10 means the percentage of resistance to travel. Most companies don't recommend using them on the street, but you can get by with it if you drive accordingly (i.e. no high performance driving on streets!!). I have 90/10 shocks on the front and 40/60 shocks on the rear of my prostreet Cutlass. They are definitely for drag racing only and not for turning. I can drive the car on the street and do quite often, but it rides more like a luxury car than anything else. The car just kind of floats along, with a real soft ride (leans a little in the turns, but not excessive). Anyway, unless your going to ONLY drive your car the least bit hard at the DRAG STRIP, stay with a good set of normal street shocks. I have KYB's on my vette and still pull 1.9 sec 60' foot times.
:cheers:

garagedweller2

thanks :cool: