Thanks Michiel. This result agrees, more or less, with Andy's estimate of 5760 g-cm. In either case, it makes my 36 g-cm motor seem kind of puny :-) The holding torque is only 660, but it seems harder to turn by hand, when it's on, than I would have thought from these numbers. Maybe I'm kind of puny :-) Thanks guys, Colin >From: Michiel Boerman > >This question has kept me intrigued for the past couple of days, so I >did a little experiment involving an alloy rod, a bit of string and a >bucket of metal scrap. > >With the bucket attached to the string and the string wound on the rod >it turned out i could lift about 5 kilos of scrap by twisting the rod >(10 mm diameter) with my fingers. > >So: 5 kilos with an arm of 5 mm makes 2.5 kgcm or 0.25 nm > >Michiel > >On Feb 19, 2004, at 3:50 AM, Colin Constant wrote: > >>Hi guys, >> >>I'm starting to do some things with stepper motors, and I'm trying to >>get >>just kind of an intuitive feel for torque specs. Like, if I was >>tightening >>a nut on a 1/4 in. bolt, with just my fingers, about how many g-cm >>could I >>exert on it? >> >>I should mention that my confusion has nothing to do with the metric >>units; >>I'd be just as clueless in imperial. >> >>TIA, >>Colin >> >>_________________________________________________________________ >>MSN 8 helps eliminate e-mail viruses. Get 2 months FREE*. >>http://join.msn.com/?page=features/virus&pgmarket=en- >>ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgma >>rket%3den-ca >> >>-- >>http://www.piclist.com hint: The PICList is archived three different >>ways. See http://www.piclist.com/#archives for details. >> > >-- >http://www.piclist.com hint: The list server can filter out subtopics >(like ads or off topics) for you. See http://www.piclist.com/#topics _________________________________________________________________ The new MSN 8: advanced junk mail protection and 2 months FREE* http://join.msn.com/?page=dept/bcomm&pgmarket=en-ca&RU=http%3a%2f%2fjoin.msn.com%2f%3fpage%3dmisc%2fspecialoffers%26pgmarket%3den-ca -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.