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Old 12-20-2019, 04:19 AM   #1
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Ballast Material

Tom & other racers:

Does PCA allow depleted uranium as ballast? I saw this in a NASA email.
Note to self - don't stand next to a NASA car, esp if it glows.


15.20 Ballast
All ballast shall be solid metal such as steel, lead, or depleted uranium, and consist of a minimum of five (5) pounds per piece. Each piece shall be bolted in place with through-bolts, fender washers, and a locking-nut / system (e.g. jam-nuts, Nylock, etc.). All ballast shall be secured sufficiently, and all bolts shall be of grade five (5). Nylock nuts or metal crimping lock nuts should not be reused.

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Old 12-20-2019, 05:23 AM   #2
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Where would you get depleted uranium? The army-navy surplus store?
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Old 12-20-2019, 05:24 AM   #3
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Was that someone with a sense of humor? Or do you suppose that's a thing?

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Old 12-20-2019, 07:30 AM   #4
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Where would you get depleted uranium? The army-navy surplus store?
10 grams = $395

You can do the math.

https://luciteria.com/elements-for-sale/buy-uranium
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Old 12-20-2019, 07:37 AM   #5
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50 lbs of lead fits in the large USPS box, "if it fits, it ships" ($17.60). Of course your mailman will hate you.
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Old 12-20-2019, 08:00 AM   #6
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Order a quantity of depleted uranium online, and you can expect a visit from guys in cheap suits but with good shoes...……………..
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Old 12-20-2019, 08:48 AM   #7
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Originally Posted by Starter986 View Post
10 grams = $395

You can do the math.
To meet the 5lb min, that's roughly $90K
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Old 12-20-2019, 03:24 PM   #8
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Was that someone with a sense of humor? Or do you suppose that's a thing?
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To meet the 5lb min, that's roughly $90K
Energy Solutions is just dumping it into the west desert here in Utah.
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Old 12-20-2019, 03:27 PM   #9
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If you are a true baller you can get what they use in F1

https://www.tungsten.com/products/tungsten-alloy-race-car-weight/
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Last edited by MaxD; 12-21-2019 at 03:25 PM.
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Old 12-21-2019, 02:40 PM   #10
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Haha!

PCA does not specify the exact materials allowed as ballast.

When I was younger, I worked in the missile industry designing guidance systems, and we always used tungsten to balance the missile airframe.

Other more dense materials all have major drawbacks: Platinum is much more expensive, Iridium is fairly rare, and Osmium is poisonous when exposed to air.

A 4" cube of tungsten weighs 41lbs!

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