New Eta 2824-2 Rotor Grinding

[crezo]

Hi all. I just completed my first build using a brand new 2824-2. However after fitting everything I've noticed the rotor is not sounding as smooth as it did out of the box.

It has a very audible grinding noise. It looks fine from what I can see, there doesn't appear to be anything catching on it and the movement tabs and screws are definately not catching on it either.

It seems to be winding and keeping perfect time from wearing it today, so all I can think of is perhaps I accidentally applied too much pressure on it when fitting and damaged the bearing?

Does anyone have any advice of what to look at for a possible issue / fix?

Thanjs for your time.

[oldhippy]

Does yours have a large screw in the middle of the isolating weight or is it held with a cerclip? 

[jdm]

Try lubricaribg the ball bearing with 9010

[crezo]

Hi, it's a screw with brass surround

[bobm12]

You'll need a staking tool to replace the bearing on the rotor.

[ramrod]

yup - and mark has a video on this. i watched it last night. doh! or maybe it was a breitling that he replaced the rotor. anyway, he's got a video on it.

[crezo]

Hi guys thabks for the replies.

Just spotted that video and had a look through. So you think its likely to be a bearing swap rather than something that's actually fixable?

[ramrod]

not fixable. it's a disposable piece. replace it in one fell swoop.

in the automotive world it's called nonserviceable.

Edited February 20, 2016 by ramrod

[crezo]

not fixable. it's a disposable piece. replace it in one fell swoop.

in the automotive world it's called nonserviceable.

OK, great to know thank you!!

[Andyclient]

Do you mean when the case back is on and tight or is it grinding without the back on ? I would try a drop of oil on the bearing as suggested , but if it is grinding on the case back try a thicker case seal or not closing it down so tight

[crezo]

Do you mean when the case back is on and tight or is it grinding without the back on ? I would try a drop of oil on the bearing as suggested , but if it is grinding on the case back try a thicker case seal or not closing it down so tight

It's with the casebook off. I'll try ailing and if no luck I'll just have to replace it.

[crezo]

Found a new rotor with bearing with some even nicer finishing for pretty cheap so will just replace the whole thing.

Thanks all.

[rogart63]

Your strap is to small :) That is actually really silly that you can't replace the bearings. 

[ro63rto]

not fixable. it's a disposable piece. replace it in one fell swoop.

in the automotive world it's called nonserviceable.

Found this. Looks like you can.

1497 is the bearing.

http://www.startimesupply.com/merchant2/merchant.mvc?Screen=PROD&Product_Code=ETA2824-1497

[ramrod]

yes - that's what i meant. the entire bearing is not serviceable and has to be replaced.

[crezo]

Your strap is to small :) That is actually really silly that you can't replace the bearings.

Haha really? I hadn't noticed ;) I've got a guy in Canada making me a new one to fit this, and that 20mm one was the only one I had lying around to test fit to make sure the watch was keeping good time.

[oldhippy]

I would say the strap is the least of your worry's. 

[crezo]

Well after fitting a brand new eta rotor and bearing, refitting the old one, making sure I wasn't under or over tightening the screw and comparing both of them it appears to just be rotor noise.

It seems I was maybe just expecting the eta to be a lot quieter than my miyotos as it's an eta. Apparently not as a lot of people have reported rotor noise on these as well.

When I can get my 9015 miyotos running dead on 5 seconds a day, there certainly doesn't seem to be much advantage to the standard grade eta 2824 other than the 'swiss made' cudos. Both running within COSC standard at a considerably different price point.

Ah well, I guess I'll just have to live with it.

Thanks for the help anyway all.

[ramrod]

interesting. i have a couple of bulovas that are considerably noisier than i expected - as well as one seiko. after inspection, they're fine. just a bit louder than normal.

must be the same with yours..

[jdm]

Well after fitting a brand new eta rotor and bearing, refitting the old one, making sure I wasn't under or over tightening the screw and comparing both of them it appears to just be rotor noise.

 

Yes as I had mentioned above it's unlikely to have a bearing failure on a brand new piece. One more droplet of fine oil is all what you need.