[CRUSH-build] lifting with springs

[Michael Eckelbarger]

They are only about $16 ea from McMaster-Carr  maybee we should buy a couple
when we order the sprockets.
We also need to order the motors & Transmissions.


On 1/10/07, Bill Bennett <bill at wizardofaz.net> wrote:
>
>  This gives example information for the extension rate for an unloaded
> spring. Would be interesting to see a curve of the extension rate as a
> function of load, so we could compare the loaded to unloaded rate. We want
> the loaded rate to be fast enough (reasonable amout of time to lift at end
> of game) and the unloaded rate to be slow enough (safe).
>
>  ----- Original Message -----
> *From:* Michael Eckelbarger <michael.eckelbarger at gmail.com>
> *To:* build at crush1011.org
> *Sent:* Wednesday, January 10, 2007 10:30 AM
> *Subject:* Re: [CRUSH-build] lifting with springs
>
>
> Here is a good explaination.  (see attached PDF)
>
> On 1/10/07, Bill Bennett <bill at wizardofaz.net > wrote:
> >
> >  One of the ideas we're discussing is lifting the partner's robot with
> > springs, for example, nitrogen filled gas shocks like are used in car trunk
> > lid lifters. We'll have to understand how these are controlled, since if the
> > lift is released with no load (no robot on it), it will still have to rise
> > safely. Can we get one to study this?
> >
> > Bill
> >
> > _______________________________________________
> > CRUSH-build mailing list
> > CRUSH-build at crush1011.org
> > http://crush1011.org/mailman/listinfo/crush-build
> >
> >
>  ------------------------------
>
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