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Date: March 29, 2002 at 22:52:14
From: Biff Loman, [usr02028.computan.on.ca]
Subject: Now, let's get one thing straight here


Ok: I'll say this one more time. Aluminum is somewhat more flexible than steel. However, it only takes marginally more aluminum than steel (in terms of volume, not mass) to achieve a given strength. Note: the Audi A8 is made of aluminum. Why? It's not to make the car lighter, Jason. It's to make it STIFFER. Aluminum is so close to steel in terms of stiffness that extra bracing can be added with no weight penalty, resulting in an over-all stiffer car. Steel is preferable to aluminum only because it is cheaper. That is all. Skyscrapers would be made out of aluminum if it were anywhere near economically feasible. So, BPD uses aluminum because a cast steel frame of equal strength would be way too heavy.

Yes: aluminum is more malleable. I can imagine some situations in which aluminum would not suffice; I imagine that certain kinds of giant industrial machinery, etc. can only be made of steel or an equally stiff material. But the BPDs? Dude, take a look at the pics and open your eyes: that's bigtime heavy-duty aluminum frame action right there.

So, do car rims made of aluminum also suck? I'll bet the 1503 could probably used for a spare tire, in a pinch. :) Seriously though, they are overbuilt.


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