Re: [gundam] A few Questions

Paul Lampshire (
Wed, 17 Feb 1999 15:21:05 -0000

>In a message dated 2/16/99 3:24:08 PM Mountain Standard Time,
> writes:
><< How come a Gundam doesn't crush concrete when it walks over concrete?
> would think that something as big and heavy as an MS would crush or sink
> concrete or grass covered ground. Also, how come in Wing, you see the
> "skating" across the ground with the feet Jets? Can other Gundams do this
> also?
> Aaron >>
>The surface area of a Gundams (or any 18 meter robot) is huge.

I remember in a discussion on UMAA where this came up, and using my weight
at the time [100Kg] and a pair of my boots to get a baseline, and using the
MG RX78-2 for the Gundam, I worked out that it has a ground pressure 3 times
what mine would have been.

Now, a Dom, OTOH has enormous feet, and if it's about the same weight as the
RX78-2 would have a ground pressure *less* than mine...

I'll try and dig out the figures at some point...

>There is a far
>lower ground pressure under a Gundam's feet than under a semi's 18 wheels,
>a woman's high heel. so, while Gundams should leave deep foot prints or
>marks from the sharp edges of their treads, there is no reason for them to
>sink to their knees when walking across soft ground or braking concrete and

It also depends how fast their feet are moving when they hit the ground.
Ground pressure really only applies when it's standing still. What's the
walking speed of a Gundam?

>As to the hover skating, that is actually very realistic for the
>dynamics of a humanoid shaped giant robot.

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