On Tue, Jan 7, 2014 at 3:55 PM, Michael Ross <[email protected]> wrote: > Hi Jukka, > > Is that "tight enough" ± a smidge? I am going with the torque wrench. > > I watched a class once where people tried to control applied torque by feel > with the max hold set, but hidden, then check the max after to see how well > that worked. It was just terrible. A person might get it right once, but > they were unable to do very well repeatedly. > > Then a set of seemingly identical joints were torqued, and the un-torquing > checked. Again, no correlation to the applied torque.
I'm wondering if they did a controlled test to see how well a "machine" did. > My contention is this loosening is not because the joints are prone to > loosening, but that they were not torqued correctly to begin with, and > maybe sometimes not enough. If you torque them right, they won't loosen - > ever. > > Mike I'm not quite buying your last line there. With no movement then yes but with vibrations in all directions, no. I've seen this test in other videos but couldn't find them but here is one to show what happens with a bolt/nut and a vibrating machine with strain gauge: http://www.nord-lock.com/wp-content/uploads/2012/06/nl_us.wmv _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org For EV drag racing discussion, please use NEDRA (http://groups.yahoo.com/group/NEDRA)
