Alt-BEAM Archive
Message #01732
To: Jonathan D Rogers chessmaster14@juno.com, beam@corp.sgi.com
From: Brian beamguy@yahoo.com
Date: Wed, 24 Mar 1999 15:08:54 -0800 (PST)
Subject: [alt-beam] Re: Buy Lego motors!
800ma!? ouch! That's about 8 times too much. They won't
work well for solar power, and they will guzzle
batteries.They are also quite large.
--- Jonathan D Rogers wrote:
> Hey, I just ran some tests on my so-called 9V lego
> motor, and it will
> run, albeit at a lower speed, at voltages all the
way
> down to 3V. I'm not
> sure about the torque at this voltage, but it turned
> a little gear system
> I had set up (a 24-tooth gear driving a 14-tooth
> gear-I forgot how to
> calculate the ratio)at 3V with no problem and
> amperage of about 800mA.
> Like I said, the torque may not be fantastic, but
> gear redcution could
> help with that. I'm thinking that you don't want a
> very high RPM on a
> Suneater so it doesn't fall down stairs, etc.
> So, even though these motors aren't cheap at $17.50
a
> piece, I think they
> could be quite good for making Suneaters,
Photovores,
> and perhaps even
> walkers.
> They also make a 9V motor with built-in gear
> reduction, and a really tiny
> 9V motor. I have one of the micro-motors, which may
> be useful for making
> small 'bots...I haven't got one of the geared ones,
> though.
> I'll keep y'all posted on this, since it could be a
> great new motor
> option...
> I'll also try the voltage-upper stuff and see how it
> works!
> Thanks, everyone!
>
> Jonathan
>
>
>
===
Brian
beamboter@iname.com
www.welcome.to/briansbeam
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