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Author Topic:   Ultralite floaters
Dirt Administrator

Total posts: 3323
posted September 18, 2001 02:10 AM UIN: 16262997
I have heard some guys talking about running some ultra light floater rear ends to help with unsprung weight.....What I am wondering, where does this end? How light is too light for safety and durability reasons? It just seems to never end. I don't think technology should end in the cars, but take a look at some of the cars that are on the track today.....they are light, but are they safe? It just floors me when someone comes out with a new(lighter) product. Unsprung weight is definitely a plus...but when it does it become overkill?


Dirt Forum Racer

Total posts: 98
posted September 18, 2001 05:37 AM
Light weight seems to have become an obsession with some teams and chassis builders. To the point that safety suffers dramatically. A bar left out here and there to save weight soon degrades the structure to the point of collapse. Not only will it collapse under kinetic energy, it can collapse under it's own dynamic forces applied to it under racing conditions.

I'll take safety any day over the ultra light stuff. My cars are already light enough. Eagle Chassis & Fabrication WILL NOT sacrifice safety in order to achieve less weight.


Dirt Freak

Total posts: 216
posted September 18, 2001 06:00 AM
my cars are around 2200-2300lbs race ready for a dom chassis. you go much lighter and safety and durability starts to suffer. i wont build one super light either.

Dirt Forum Racer

Total posts: 84
posted September 18, 2001 08:18 AM
Personally I have noticed that most chassis weigh in about the same. At least the chromoly ones. The big difference is when you go to buying the parts to bolt onto it. By taking your time and selecting the right ones you can save a lot of weight you can add to your chassis for safety. Also if IMCA mandates the weight rule their should be less of an importance put on the subject. Also I have seen a few of the chromoly housings rip at the weld for the pullbar bracket. Weight verses reliabilty?

[This message has been edited by BILLY BOB (edited September 18, 2001).]

Dirt Roller

Total posts: 12
posted September 18, 2001 04:47 PM
Light cars to me are almost a thing of the past. The only time you see a 2000 pound car or one lighter is at the big shows. And then these guys got 350 pounds of lead strapped to it. I agree its nice to be able to strap weight where you want it, but having to put more than 75 pounds on a car is kinda stupid. But to each his own. I'd love to have the money to buy a "trow away car". Just my 2 cents worth.

Dirt Freak

Total posts: 220
posted September 18, 2001 07:57 PM

Jammin, You are right with your concerns. What I try to due while building a car is to use as light as possible for the unsprung things. Then light bolt-ons then I can add wall thickness, or tubing diameter. This makes a car fast and safe.

There is nothing wrong with light weight stuff for bolt ons as long as the builder adds the weight back into the chassis. A chassis need to be built with crush zones and safety areas. You could take my thoughts too far and build a car sooo ridged that in the event of a big crash the car is too solid and the energy goes directly to the driver which will hurt the driver.

These are just my thoughts, I too agree with yours............Jeff

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