nunu78 1,743 Posted March 1, 2018 Today got the delivery of my Blackbird avenger V2 from GF factory. Everything is fine the way it should be except a very loud rotor. slight movement of my wrist make a loud sound of a rotor movement, to me the only other example of rotor this loud was BR 123 with myota movement . Is it just my bad luck or this is common with this particular model. Share this post Link to post Share on other sites
nunu78 1,743 Posted March 1, 2018 anyone who has the the same experience??? Share this post Link to post Share on other sites
GenTLe 1,511 Posted March 1, 2018 7750? Normal. Open it in and put a very tiny amount of oil in the roto bearing. Also check that the rotor screw is not loose (don't overtighten it!) EDIT: my bad that's a non chrono. Just check the rotor screw, if it (the rotor) touches the case back and if rotating it with a toothpick in both directions you can hear the click doing its 'click' sound (meaning it is actually charging the mainspring) Share this post Link to post Share on other sites
NCRich 13,804 Posted March 1, 2018 What Gentle says. Good to see you out and about Nunu. Share this post Link to post Share on other sites
