Subject:
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Re: new Mindstorms servos?
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Newsgroups:
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lugnet.robotics
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Date:
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Sun, 8 Jan 2006 13:56:15 GMT
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Original-From:
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Juergen Stuber <JUERGEN@JSTUBER.stopspammersNET>
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Viewed:
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1972 times
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Hi,
"Mark Bellis" writes:
> In lugnet.robotics, Yann Vernier wrote:
> >
> > <http://www.botmag.com/articles/lego_mindstorms_robot_news_1.shtml>
>
> The speed of the motor attached to another robot in the
> video shows that its speed is significantly slower than
> the 71427 motors supplied with the RCX 1.0 to 2.0. I
> suggest more like 60-100rpm rather than 300. This gives
> more torque for the same amount of electric current.
in the video I counted about eight revolutions in 5 seconds,
that would put it at about 96 rpm.
Jürgen
--
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
gnupg key fingerprint = 2767 CA3C 5680 58BA 9A91 23D9 BED6 9A7A AF9E 68B4
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Message has 2 Replies:
 | | Re: new Mindstorms servos?
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| (...) Although I think there's two things to watch out for here. First, if you have continuous monitoring of the encoders, you could have speed control (in other words, the speed in the video may not be the maximum, but something less). Second, (...) (18 years ago, 8-Jan-06, to lugnet.robotics)
| | | Re: new Mindstorms servos?
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| The problem with gearing down motors in order to exchange RPM for torque is that if you actually NEED RPM rather than torque then you have to gear them back up again. If you have a high RPM motor to start with, you have to gear it down in order to (...) (18 years ago, 9-Jan-06, to lugnet.robotics)
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Message is in Reply To:
| | Re: new Mindstorms servos?
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| (...) The speed of the motor attached to another robot in the video shows that its speed is significantly slower than the 71427 motors supplied with the RCX 1.0 to 2.0. I suggest more like 60-100rpm rather than 300. This gives more torque for the (...) (18 years ago, 7-Jan-06, to lugnet.robotics, FTX)
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