"Derek Lyons" wrote in message
...
John Doe wrote:
And they could then ship a replacement bearings unit and the crew would
put everything back together. (assuming the CMGs had been designed to
be easily taken apart).

And theres the rub.

Indeed. I'm sure the designers of the CMGs didn't think that astronauts in
EVA suits would need to replace the high precision bearings on the CMG.
It's far easier to design the entire unit to be replaced, based on the
assumption that the shuttle would be flying routinely to ISS for the entire
life of the ISS program.

Jeff
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