Using Concrete to build space ships...

Hello TangoMan,

>> I was not referring to move the asteroid or even the mass needed to
>> build the cycler in one big chunk with ion drives.
>>
>> I did propose using several prospector crafts with ion propulsion
>to
>> get the materials off the asteroid (this could need thousands of
>> fares) dock with the carrier if needed and let the carrier craft do
>> the further transportation.
>
>It doesn't matter whether you move the mass all in one big piece or
>in millions of smaller payloads, the fuel requirement will be the
>same. Where will you get the fuel?

You nailed me here. Yes, the prospectors would use fuel as your
construction crew would probably have to also.

How would the construction crew move on an asteroid?
Wouldnt they use ion thrusters also to move forward or having to put
pressure onto the ground?

Frank