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Author Topic:   ballast placement
dirtracr
Dirt Forum Racer

Total posts: 79
posted October 25, 2001 03:33 PM
seems like you get a different opinion on this one wherever you go...whats everyones thoughts on the when's, where's and why's of ballast placement...

bbracer17
Dirt Freak

Total posts: 252
posted October 26, 2001 06:38 PM
I have heard that high in the rear will tighten the car and low in the rear will loosen it.

spde
Dirt Full Roller

Total posts: 63
posted October 28, 2001 09:59 PM
the higher on the car (with some roll in the car) the tighter it will make it in. the lower on the car the losser in. but if you weight down the right the losser off it will be. so more on the left the tighter off it will be. I run about 40#'s on the left side very high on the car. works very well on the dry.

jammin
Dirt Administrator

Total posts: 5060
posted October 30, 2001 01:20 PM UIN: 16262997
I never put weight behind the rear spring mounts because of weight being taken off of the front end.


jammin

bkap
Dirt Full Roller

Total posts: 61
posted October 30, 2001 01:41 PM
I run my weight, when needed, low on the cross member directly behind the rear end, with the thinking that it tightens the car on exit.

And Jammin', isn't taking weight off the front end a good thing, especially if you need more rear %? Back in my late model days, we were concerned about a pendulum effect by placing the weight on the back bumper.

jammin
Dirt Administrator

Total posts: 5060
posted October 30, 2001 02:11 PM UIN: 16262997
Only if you want the front end to wash out in the turns.

jammin

tmtrigg4
Dirt Full Roller

Total posts: 47
posted October 30, 2001 05:02 PM
Jammin,I don't completely understand. With what your saying there is a max rear percent that is optimum. What is it in your opinion? I think it has a to do with track type also. Momentum tracks don't require as much rear % as stop and go tracks. I agree that too much will wash the front end with no other changes but can be corrected with front spring changes. This brings us back to what is too much?

jammin
Dirt Administrator

Total posts: 5060
posted October 30, 2001 06:33 PM UIN: 16262997
I run a tight car and need all the weight on the front tires I can get to turn it. If I take weight off of it(front) and do the see saw affect on the rear tires, sure it will increase the rear percentage, but it will take weight off of the front tires. You can still increase rear percentage by putting lead just in front of the rear spring locations without taking weight off of the front tires. Putting weight that far back creates a momentum swing on our car that I really don't care for that much. These are my preferences, not saying they are right or wrong, but it is what I use. There are 35 different ways to do the same thing on every car, some people just have their way to do things, this is mine. So, I guess what I am getting at, it all depends on the weights and percentages that you are using. If you run a tighter car, you will need more weight on the front, looser car can take less to turn. Again, it is all in preference.

jammin

[This message has been edited by jammin (edited October 30, 2001).]

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