low weight or centered higher weight ?

[sporty]

I have a question for the pro's.

I have mostly done, low center of gravity weight, the whole car is not more then 1/4 thick. the same thickness as tungsten cube.

This has done us very well.

i did do a soap box derby car, that was hollowed out and the weight placed into the center, but i had to add alot more there, so it was higher.

The car was faster than I thought it would be, but still not fast enough for my likes. It was also stock wheel base too.

Have any of you done some serious testing with this ?

i know this has been talked about a few times in posts. but I have not read anywhere, when testing as proved or dis-proved the differance.

I would say lower is always better, but I could be wrong. hince for the post.

sporty

[Lucky 13]

Oct 15, 2008 11:19:35 GMT -6 sporty said:

I have a question for the pro's.

I have mostly done, low center of gravity weight, the whole car is not more then 1/4 thick. the same thickness as tungsten cube.

This has done us very well.

i did do a soap box derby car, that was hollowed out and the weight placed into the center, but i had to add alot more there, so it was higher.

The car was faster than I thought it would be, but still not fast enough for my likes. It was also stock wheel base too.

Have any of you done some serious testing with this ?

i know this has been talked about a few times in posts. but I have not read anywhere, when testing as proved or dis-proved the differance.

I would say lower is always better, but I could be wrong. hince for the post.

sporty

Sporty,
Low and back is the right way to have your weight. If you are using the 3/8 clearance rule get the car and weight as low to the 3/8's as possible.


Lucky 13

[derbydominator]

There was a post on here some months ago by someone more into the physics than I and his statement was as Lucky 13 pointed out as well. As low as you can go. A host of ways can be used to get the weight lower. Using the tungsten plates is one option, another option is to simply drill the axle holes higher in the car body. Good luck!

Darryl

[scojo]

Is this dependent on the shape of the track? Last year was my son's first PWD and we weighted slightly in front of the rear axle. I was surprised to see that rather than a drop and a long flat, the track was one constant angle decline with very little flat. Does that change where we should put the COG?