Subject:
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Re: Meaning of lettering on white gearwheel.
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 16 Oct 2000 12:53:04 GMT
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Reply-To:
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Rob Doucette <lugnet@doucettenet.ANTISPAMcom>
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Viewed:
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882 times
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"John Coppola" <lego-robotics@crynwr.com> wrote in message
news:4.3.2.7.2.20001016171517.03f59f08@mail.iinet.net.au...
> Ncm is the metric measure for torque, imperial is
> ft/lb's
ft-lb as in length * force (torque or moment, not to be confused with
momentum which is force*time or mass*velocity) not length/force.
> At 05:05 PM 16/10/2000, Mario Ferrari wrote:
> > Sean Harrington <harrington@macgenius.com> wrote:
> > > In lugnet.robotics, sjbaker1@airmail.net writes:
> > > > On the white 'slipping clutch' 24t gearwheel part is written:
> > > >
> > > > 2.5 5.0 Ncm 2.5 5.0 Ncm
> > > >
> > > > What is the significance of this?
This is the torque range which will cause the clutch gear to slip. It is a
great little protection device for Technic/Mindstorm creations.
> > > I think Ncm is Newtons per centimeter, but I can't remember how a • Newton
> > is
> > > defined.
Newton * centimeter... a Newton is the metric unit for force, defined as a
kilogram * meter/second^2, 1N = 1kg accellerated at 1 m/s^2.
> > > Can a real physicist jump in here and keep me from embarrassing myself
> > further?
Doesn't take a physicist... this is high school physics stuff (which is the
stuff you forget first!).
--
-Rob.
=============================
New sets and parts for sale or trade:
http://www.doucettenet.com/lego/
http://www.brickbay.com/store.asp?p=doucette
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Message is in Reply To:
 | | Re: Meaning of lettering on white gearwheel.
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| Ncm is the metric measure for torque, imperial is ft/lb's hence 5Ncm is the the amount of torque required before the gear will 'slip', 2.5Ncm before it will engage again. the difference is the hysterisis. one would assume that Lego has a range of (...) (24 years ago, 16-Oct-00, to lugnet.robotics)
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