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In lugnet.technic, Paul Davidson writes:
> I see. I understand what you're saying. The main thing I'm looking for in
> this case, though, is a constant downward speed which does not accelerate.
>
> Your ideas are interesting though, I will probably incorporate them into
> future projects (a working Star Wars shuttle is a particularly neat idea,
> I'd almost like to see pictures of yours).
>
> --
That's where the friction in the pulley comes into play. Your system will need
to accelerate initially to attain some sort of velocity. The friction will
eventually (and pretty quickly if you fine-tune it right) counter act the
acceleration, producing a nice, constant velocity system where acceleration(f)
minus friction(f) equals zero (bracketed "f" is force). It worked in my
mechanics labs anyhow.
Unfortunately I didn't take any photos of the shuttle as I wasn't happy with
the overall look. I really only built it for the flywheel system anyway. It
was predominately red as I had yet to aquire a large quantity of grey plates
at that stage. I may give it a go again some time in the future.
Pete Callaway
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