Subject:
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Re: baffled by a part in RIS 1.5
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Tue, 3 Apr 2001 13:35:38 GMT
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Viewed:
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1287 times
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N.cm = newton.centimeter
In lugnet.robotics.rcx, Eric Sophie writes:
> Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over
> rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means
> the range of operable force applied before the clutch disengages. Nano
> Centemeter of force. In short I used one in each hand of the Robot I am
> building, after gearing the the motor 1 or two "steps" (8 to 24 tooth) I
> then inserted the Torque gear, and ran the axle straight to a worm gear
> assymbly, the hand closes with a good deal of force, then when the fingers
> reach the thunb, the force is greater then the presecribed limits then the
> gear starts to slip and thus preventing damage to the structure.
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?i=39790
>
> They are really very handy if you can gear them for the proper application.
>
>
> In lugnet.robotics.rcx, Dave Mee writes:
> > Hello!
> >
> > There is a part in my RIS set which i have never used. Nor can I think of
> > what it could be used for, or describe it without using words like "weird"
> > and "what the".
> >
> > It's a thick white gear, 1 stud wide by three studs in diameter. One one
> > side, "LEGO" is inevitably stamped around it, and on the other, the cryptic
> > text "2.5 - 5.0 Ncm", twice. It has a grey bit and a hole in the middle
> > suitable for a rod (you know, those extruded plus signs whose length you can
> > never discern until you discover you've used the wrong one at the start of
> > your model, and everything has to come apart to finish it.). This middle
> > section rotates separately.
> >
> > Having grown up with computers, physical things make me dizzy when I think
> > about them. What on earth is this piece for? I have no idea. I can't even
> > start to think what it could be used for - it seems utterly pointless, a
> > gear whose centre rotates separately from the rest of it!
> >
> > Please... there must be someone with a better answer than 'mouse frisbee
> > (thick)'.
> >
> > TIA!
> >
> > Dave
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Message has 2 Replies:
 | | Re: baffled by a part in RIS 1.5
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| "Constantine Hannaher" <constantine.hannahe...shome.com> wrote in message news:GB7xrE.KJ3@lugnet.com... (...) Whoah! Thanks for the insights everybody! N.cm? This stuff is meant to be used by 12 year old kids? 27 year old kid hangs his head in (...) (24 years ago, 3-Apr-01, to lugnet.robotics.rcx)
| | | Re: baffled by a part in RIS 1.5
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| I did'nt have the piece with me at the time I posted to lugnet, and yes Symbology is important. Increadibly, all of these mechanical aspects can be mapped out and calculated. It's just cool. (...) (24 years ago, 5-Apr-01, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Re: baffled by a part in RIS 1.5
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| Ok, this is called a "Slip Gear" or "Torque Gear" It is used to prevent over rotation by means of an internal clutch, the 2.5 - 5.0 NCM I belive means the range of operable force applied before the clutch disengages. Nano Centemeter of force. In (...) (24 years ago, 3-Apr-01, to lugnet.robotics.rcx)
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