-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Sunday, 2013-09-08 at 11:32 +1000, Basil Chupin wrote:
I was thinking about the bearings.
Are the wheel bearings on your bicycle or your car horizontal or vertical? :-)
I have seen machinery stop when changed position. It depends what they are designed to do. I remember a project I was involved with, a rotating and tilting platform, that moved easily when horizontal, and stuck when reached about 30 degrees. We had to buy motors 10 times bigger than designed, and step motors had a size limit. Not even the manufacturer was aware of the problem, because that machinery was designed for heavy motors: if the torque increased, they just slowed down. For us, too much torque and the step motors started loosing steps. Disastrous. (http://commons.wikimedia.org/wiki/File:10inchRotaryTable.jpg) I just wanted confirmation that my recolection of "vertical HD = no" is unfounded nowdays. Just in case :-) Maybe, just maybe, a disk designed for 20000 hours would last 15000 if placed vertical. Or maybe 25000. - -- Cheers, Carlos E. R. (from 12.3 x86_64 "Dartmouth" at Telcontar) -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (GNU/Linux) iEYEARECAAYFAlIsZt8ACgkQtTMYHG2NR9X91ACeLAHrJxQGdNlX1wsI2Ms6a+VV GAgAoJVS8Ba60FU793ArnRkDrY20+GGO =2oXq -----END PGP SIGNATURE----- -- To unsubscribe, e-mail: opensuse+unsubscribe@opensuse.org To contact the owner, e-mail: opensuse+owner@opensuse.org