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 09:05:51 GMT
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Viewed:
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694 times
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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?
>
> I think Ncm is Newtons per centimeter, but I can't remember how a Newton • is
> defined.
>
> So, if you're spinning the drive shaft, and the counter force on the gear • teeth
> is less than 2.5 Ncm, you're fine. If the counter force on the gear teeth • is
> 2.5 or greater, you will begin slipping, transferring exponentially less
> rotation until you meet 5.0 Ncm of resistance, at which and beyond, no • rotation
> is transferred at all.
>
> Can a real physicist jump in here and keep me from embarrassing myself
further?
I'm not a real physicist so I'm taking the risk to add confusion instead of
knowledge :-)
I heard that the 2.5 and 5.0 numbers refer to the threesholds the gear
starts to slip in the two possible rotation directions, clockwise and
counterclockwise. Actually this theory sounds reliable, as if you open the
gear you see that this device is not at all symmetrical with regard to the
rotation direction. It would be great if someone tests a bunch of them and
posts some stats so we all know a bit of more of this so useful gear.
Mario
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Message is in Reply To:
 | | Re: Meaning of lettering on white gearwheel.
|
| (...) I think Ncm is Newtons per centimeter, but I can't remember how a Newton is defined. So, if you're spinning the drive shaft, and the counter force on the gear teeth is less than 2.5 Ncm, you're fine. If the counter force on the gear teeth is (...) (24 years ago, 16-Oct-00, to lugnet.robotics)
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