[CRUSH-build] lifting with springs

[Lamar Flake]

I thnk that the quiker we order parts the quicker everything will get 
done... Espessially the parts that take a long time to order and get 
material for.


>From: "Michael Eckelbarger" <michael.eckelbarger at gmail.com>
>Reply-To: build at crush1011.org
>To: build at crush1011.org
>Subject: Re: [CRUSH-build] lifting with springs
>Date: Wed, 10 Jan 2007 14:43:22 -0700
>
>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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>>


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