Question on automatic weight(?) making sounds

[ghoatson]

Just got a Corum Admiral's Cup 48 in titanium a few days ago from trustytime. So far, I've been pretty pleased with it, but over the last couple days, the automatic winding weight (I don't know what its called) has been making a spinning sound. It's a whirring "zzzzzzz" (or perhaps buzzing) sound if I happen to move my arm in a way that sets the weight swinging. It just keeps spinning from the momentum and is very loud. It is significantly louder than, say, an automatic Sturhling Original that I have.

Is there any way to oil it or do I need to tighten the main screw? Any idea as to how I can fix this because it's driving me slightly crazy.

Also, I'm very very new to watches and doing self repair. I did take the case-back off to see what was going on, and it seemed like the weight was moving up and down a little. But I'm definitely no expert and would hate to wreck a (for me) expensive new watch.

Thanks for any light you can shed on this problem.

[ghoatson]

Nevermind. Looks like this is common to all asian 7750/7753 movements. There is a supposed fix here: http://www.rwg.cc/topic/17871-you-do-not-have-to-live-with-the-7750-whirrrr/ but, frankly, I'm scared to do that. Haha.

[Jkay]

The asian or swiss 775x series has over 200 parts. It is commonly accepted that to have a long-term reliable watch with this movement it is necessary to have a full service done by a watchsmith who knows the movement .. not just anyone.. Add it to the cost of your watch when you consider buying one. That's why I never recommend this complex and temperamental movement to newbies.

They can not wrap their head around the need to service what they falsely consider a new and ready to go movement. It's simply not.

Once you have it back from it's visit to the watch doctor you can enjoy it for years to come.

[Watchmeister]

You got it. Often the Asian rotor is very noisy out of the box. It can be improved but if you haven't done it before have a watchsmith do it. Whenever I am considering a chrono I factor in a service as an insurance policy. On an automatic or hand wind I let them remain ticking timebombs. If and when they blow up replacement movements are usually fairly inexpensive as is the service if you go that route.