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Author Topic:   rr spring ???
marksracing
Dirt Forum Racer

Total posts: 79
posted August 15, 2005 05:15 PM  
how will the car change if i soften the rr spring from 175 to 150

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted August 15, 2005 06:26 PM  
the call will lay over more and sometimes loosen the car up but depending on the bodyroll and eveything it could also tighten you up

CLBaker25
Dirt Maniac

Total posts: 193
posted August 16, 2005 12:15 PM  
It will loosen the car on entry and tighten it on exit.

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted August 16, 2005 05:29 PM  
Cl i have seen it actually tighten you up going in cause of the body roll giving it more side bite it depends alot on how high the body is mounted.

also depends on the type of tire how heavy the wheels is on the rr if its a beadlock or non beadlock


CLBaker25
Dirt Maniac

Total posts: 193
posted August 17, 2005 11:44 AM  
iowa,

I could see it having a tightening effect but that low of a spring I don't know that it will do anything but compress without putting much pressure on the right rear tires. It could depend on how heavy his car is. (2500 pound hobby stock -vs- 3100 pound stock car)

PS I appreciate the good discussion.

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted August 17, 2005 01:56 PM  
ya this is a good point

Here is how we look at this
with a 13 inch spring you can run a softer rate becuase of coil bind so when the car goes into the corner and starts to lay over it will really roll over on that rr making the car tighter going in then as the car starts to shift back past its neutral position and lays over on the left rear that softer spring wont rebound as quick so if you do run a soft you need to run a tie down on the left rear to componaste for it

sc1 racing
Dirt Freak

Total posts: 419
posted August 17, 2005 02:26 PM  
13 inch springs mees up ride height, take away adjust ment from the rear and bind more due to tring to bow. a 175lb 9in spring will not compress coils any differant than a 13in spring. spring weights are the same so is coil deminsions.

not to mention the 13 raising the rear off car up can disturb it entering turn..


if you softer r/r spring i would sugest you also run more stagger in left rear..remeber front gets you in, and rear gets you out. it will not help entry much but will effect center off..

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted August 17, 2005 04:25 PM  
Ill have to agree with ya to a point but then have to disagree with ya

13 springs do raise the car up
But now look at this if you have 11 inch springs in the rear and you have rack to the car and you add the 13 inch springs and get 1 inch or 1 1/2 inches of rake in the car the car will then get off the corner better and also help you get in the corner

What i mean by saying that you can run a softer spring with out coil bind is that with a taller spring you have more coils meaning that it will take more to coil bind that spring then it would say a 11 inch spring not that it changes the spring rate but it does change the way the spring acts like the guys that run 16 inch springs they run a softer spring then run weight jacks so the can compress the spring more to get there ride height where they want it with out lossing that spring rate

These are all very good points and we could go on for days with this one

LOL aint this a good place to talk about this stuff

Tire Killer
Dirt Full Roller

Total posts: 47
posted August 18, 2005 09:36 PM  
When ya'll say "put a tie down on it", what exactlly are you refering to? Don't mean to sound dumb but just unsure what you're getting at!

iowa_dirt_track_girl
Dirt Freak

Total posts: 461
posted August 19, 2005 12:06 AM  
Tie down refers to the type of shock. The compression and rebound of that shock to say in other words that shock will go dwon easy and come up hard it helps keep the car on that corner more It is usually used on the rf or lr of a car

sideways
Dirt Forum Champ
Total posts: 715
posted August 19, 2005 08:23 PM  
This also changes if you can run drop spindles in the front.I run 11"springs and have my jacks in the rear down atleast 2 inches so would like to try 13" springs in future.The front end was extremely low.My ride heights all came out different than others ran it was questioned til they couldnt catch me lol,til I rolled it and bent it all up.Gettin hit in the right rear quarter when the left side is going over the hood of a competitor(sp) will do that man that was a mess.

[This message has been edited by sideways (edited August 19, 2005).]

    

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