clkcadet Posted September 21, 2009 Report Share Posted September 21, 2009 Hi All I just received a beautiful looking SS GMTIIC with ETA clone (I think I may have gotten a swiss by accident but thats another story) One thing I noticed, and unlike my other reps is that when I "tap" the middle of the crystal I get a kind of tinny, cheap sound as a response. Usually I hear a nice thud from my other reps and gens. I thought this may be the crystal being non-sapphire, but I dont think that is the case. I then removed the caseback and everything was intact and looked good. I then had the idea that the rotor may be a bit loose, I held it down gently while tapping on the crystal and I heard the nice thud I hear on other watches. If it helps, I notice when winding on my hand the rotor is a bit nosier than normal. Does anyone think I have a loose rotor that causes this sound? If so could anyone advise the correct tool to use to cure this loose rotor? If its not the rotor does anyone have any other advise? I am willing to install a Clark if that may help. Thanks! Link to comment Share on other sites More sharing options...
freddy333 Posted September 21, 2009 Report Share Posted September 21, 2009 The rotor should be attached by a single screw. Make sure the screw is snug, but be careful not to over-tighten it. While you are in there, I would check to be sure the 2 screws that secure the movement into the case are snug as well. If anything is loose inside the case, those are more likely the culprits than the rotor. But anything is possible with reps. Link to comment Share on other sites More sharing options...
clkcadet Posted September 21, 2009 Author Report Share Posted September 21, 2009 Can you please advise the correct tool that could be used to tighten the rotor if this is the case? If the rotor is fine is it possible that i have a non sapphire crystal that is creating this cheap sound when i tap it ? Link to comment Share on other sites More sharing options...
offshore Posted September 21, 2009 Report Share Posted September 21, 2009 A correct sized screwdriver is all thats required to tighten the rotor. It is very possible that you have a non sapphire- Below is some text from a "How to" I am writing for another web site. This is an opportune time to get some other members here to "proof" read it, and tell me if I've got anything wrong If you tap an acrylic crystal with your finger nail you will hear a Link to comment Share on other sites More sharing options...
freddy333 Posted September 21, 2009 Report Share Posted September 21, 2009 OS - the easiest way to ID a (mineral) glass crystal is to view it from the side. Glass always has a green tint to it, while sapphire & Plexi are either clear or white. Also, glass feels cool to the touch, while sapphire & Plexi tend to have a neutral (room temperature) feel. These tests require no tools &, once you know what to look for, are quite reliable. Link to comment Share on other sites More sharing options...
clkcadet Posted September 21, 2009 Author Report Share Posted September 21, 2009 Offshore, can you provide info on which correct screwdriver to use? I can buy at a local hardware store. A lsoit appears it is pure sapphire I see no green tint. Link to comment Share on other sites More sharing options...
offshore Posted September 21, 2009 Report Share Posted September 21, 2009 @freddy, Thanks my friend, I'll make the necessary adjustments. @clkcadet, If you entertain doing any work on watches, DON'T buy a screwdriver or a set, at the local hardware store! And buy the best set of drivers you can find. They are without doubt the one tool which any repairer needs to have the best quality available. You can get some reasonable sets from maybe $25-$30 and upwards. Top quality Swiss sets can run to as much as $200. The correct size, is the one that fits snugly into the screw head, which is why you need a set of 6-9 various sizes. Have a search through the various posts here, it is a subject which is much discussed. Offshore Link to comment Share on other sites More sharing options...
freddy333 Posted September 21, 2009 Report Share Posted September 21, 2009 The correct size, is the one that fits snugly into the screw head. Ditto. Link to comment Share on other sites More sharing options...
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