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Pastimes : Don't Ask Rambi
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To: Jacques Chitte who wrote (51736)6/3/2000 8:48:00 PM
From: Gauguin  Read Replies (2) of 71178
 
I have exactly the same questions and inferred conditions.

....the max rated pressure of the steel in the wheels and tracks is a property of the material that needs to be designed around.

..... Giving each drive wheel a very conservative (on the small side) solid contact of 4 square inches, that drops contact pressure.....

How do we determine this contact area?

The wheel is always trying to become round (I know this is a DUH.)

In motion or at rest, what is the contact area?

Also, it is my temporary contention that the wheels are not flat. That they are not cylindrical in bearing-suface-to-rail contact.

They are cones. They rest on a very small bearing point at any given time.
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