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wegeman76 · 11 March 2010, 12:53 AM

All my other watches I can hear the rotor spinning but on my GMT ceramic nothing?

My other watches mostley ETA movements

WatchnRoll · 11 March 2010, 12:56 AM

Because...it's a Rolex!

Actually I don't know the answer but that just seemed appropriate.

Jackxv · 11 March 2010, 12:56 AM

Because of the excellent construction

Jack

The GMT Master · 11 March 2010, 12:58 AM

The only Rolex in the current line up where you can actually feel the rotor moving is on the Daytona. But even still, shows just how smooth the mechanism is on a Rolex movement

DM101 · 11 March 2010, 01:02 AM

Tested:

DAYTONA - yes (wound, wound sound)

EXPLOER 1 - yes (click click sound)

14060M - yes (same as EXP 1)

The REST (faintly can hear the rotor)

GMT2c SS and TT - Both No

Exploerre 2 - No

DateJust - No

16610 - No

Oyst Perpual 21mm - No

Atomant · 11 March 2010, 01:04 AM

maybe I think a watch maker would be appropriate to answer this question than to have us all guessing.

wegeman76 · 11 March 2010, 01:02 AM

Maybe because there is no ball bearings in the rotor?

warrior · 11 March 2010, 01:40 AM

This would be my guess! Actually, I think I've read that the lack of ball bearings in the rotor is one of the perceived weaknesses of the Rolex 3135 movement. But, I'm not a watchmaker so someone will chime in.

Quote:

Originally Posted by wegeman76

Maybe because there is no ball bearings in the rotor?

vjb.knife · 11 March 2010, 11:51 AM

Quote:

Originally Posted by wegeman76

Maybe because there is no ball bearings in the rotor?

This is the answer. The ball bearing assembly in ETA movements is inherently more noisy the the bushing used on Rolex rotors as long as they are not worn out.

The other answer is that you need your hearing checked. I can hear it and feel it, no problem.

Rolesor · 11 March 2010, 01:11 AM

never noticed that when trying them on! Very cool!

HL65 · 11 March 2010, 01:12 AM

The Daytona has a nice sound to it--you definitely hear it--not on my others--GMT or LV.

wegeman76 · 11 March 2010, 01:17 AM

lol
That is true
JJ would know, he knows evrything

JJ Irani · 11 March 2010, 02:40 AM

Quote:

Originally Posted by wegeman76

lol
That is true
JJ would know, he knows evrything

Yeah..........sure!!

My guess is you don't hear the rotor because of the solid, sound-proof construction of the Oyster case!!!

Tools · 11 March 2010, 02:50 AM

Quote:

Originally Posted by JJ Irani

Yeah..........sure!!

My guess is you don't hear the rotor because of the solid, sound-proof construction of the Oyster case!!!

That helps JJ..

But, the Rotor axle on a Rolex rotor is solid and is attached to the movement through a solid bushing and capture jewel........... As long as it is oiled, the axle/bushing set-up is precise and silent.. There is no lost movement or energy and Rolex has made this their choice because of it's silent and precise construction. Naysayers do point to the wear on this axle as a weak point or a fault...but it's a choice, works well, and easily replaced at service or if anything goes wrong...

Other watches do use bearings...a much more complicated (more parts involved) and noisy set-up.. (The Daytona does use a bearing rotor)

ersnyder · 11 March 2010, 01:42 AM

You don't hear it on the SD either. It's VERY noisy on my PAM 90 and a little on my Roadster and Tank.

Nairn1980 · 11 March 2010, 01:44 AM

Didnt know the Daytona made a noise, but just listened to mine very carefully and I can hear it :)

NavitimerNut · 11 March 2010, 01:46 AM

I tried on a watch with an ETA movement, and at an arms length away, I could hear the rotor grinding and making so much noise, I thought it was broken. On the other hand, I tried on a GMT and I was suprised how smooth and quiet the movement was.

Starwalker · 11 March 2010, 01:47 AM

sometimes, when walking up or down step and if you are wearing the daytona tight, u can kinda feel/hear the rotor, its kinda cool.

JEC · 11 March 2010, 01:57 AM

As far as I know, it's because Rolex uses a lighter and more balanced rotor combined with a narrower winding pinion. The gearing is higher, so it takes less rotation to wind, and doesn't need as much momentum. But that's the weakness, because the pinion is narrower it's more fragile and more easily affected by shocks.

sparky_magoo · 11 March 2010, 02:00 AM

I used to have an Omega Seamaster Chrono. I could feel the rotor spin and it always bothered me. My DOXA and both of my Rolexs are silent.

wegeman76 · 11 March 2010, 02:04 AM

Weak point not to sure about that
I have seen rolex last for 20 years with no service

clarencek · 11 March 2010, 03:56 AM

Asked this same question a while ago and got some great answers about the different rotors used in the Daytona vs the sub:

http://rolexforums.com/showthread.php?t=87561

Rscmaine · 11 March 2010, 04:01 AM

Hell, I can't hear the rotor on my lawn mower - your expect me to hear my watch?

Arrgo · 11 March 2010, 02:29 AM

Omega - Ball bearings - noisy as a locomotive
Rolex - Bushing - quiet as a mouse

Cheers

snow_rocks · 11 March 2010, 02:36 AM

If I hold my 1680 up to my ear and rock it back and forth, I can hear the rotor settle down, but not on my EX1.

Where's the WD-40?

Thomas · 11 March 2010, 04:33 AM

How long before someone gets out a stethescope to listen to their rotor?

Dr. Robert · 11 March 2010, 04:43 AM

Quote:

Originally Posted by Thomas

How long before someone gets out a stethescope to listen to their rotor?

I just did.......and my Rolexes sound quite healthy

JJ Irani · 11 March 2010, 04:45 AM

Quote:

Originally Posted by Thomas

How long before someone gets out a stethescope to listen to their rotor?

Quote:

Originally Posted by Dr. Robert

I just did.......and my Rolexes sound quite healthy

Alcan · 11 March 2010, 04:42 AM

As has been mentioned, most Rolex models use a bushing for the pivot whereas Daytona models including this Zenith use a ball bearing pivot.

CorruptedSanity · 11 March 2010, 02:32 AM

Excellent mechanism? You can't hear it because its a Rolex? Hehe

let's not kid ourselves guys.
Because this would then make my Audemars Piguet Royal Oak inferior because a reasonable flick of the wrist will send the rotor into a healthy whizz. And this is from a famed 2120 movement too

The same theory applies to the Jaeger LeCoultre Reverso movement.
I wo
ndered why my Milgauss GV rotor was silent too. I assumed because of the robust case/cage utilized to make it anti-magnetic.

11 March 2010, 12:53 AM	#1
wegeman76 "TRF" Member Join Date: Jul 2009 Real Name: Luigi Location: glenview Watch: Rolex GMTIIC Posts: 224	Why cant you hear the rotor on a Rolex? All my other watches I can hear the rotor spinning but on my GMT ceramic nothing? My other watches mostley ETA movements

11 March 2010, 12:56 AM	#3
Jackxv "TRF" Member Join Date: Dec 2007 Location: Netherlands Posts: 969	Construction Because of the excellent construction Jack

11 March 2010, 01:04 AM	#6
Atomant "TRF" Member Join Date: Jun 2007 Location: Fernwood Posts: 3,455	maybe I think a watch maker would be appropriate to answer this question than to have us all guessing. __________________ 116613LN 16600SD 16610LV 116710 16710 16570 Speedy 3570.50 PAM25 Oris TT1 and a bunch of G-Shocks. Flipped: Daytona 116520 Seamaster 2231.80

11 March 2010, 01:12 AM	#11
HL65 TRF Moderator & 2024 DATE-JUST41 Patron Join Date: Dec 2007 Real Name: Ken Location: SW Florida Watch: One on my wrist. Posts: 63,706	The Daytona has a nice sound to it--you definitely hear it--not on my others--GMT or LV. __________________ *SPEM SUCCESSUS ALIT*

11 March 2010, 01:47 AM	#18
Starwalker "TRF" Member Join Date: Oct 2008 Location: aroundtheworld Watch: SS Daytona - BLACK Posts: 2,253	sometimes, when walking up or down step and if you are wearing the daytona tight, u can kinda feel/hear the rotor, its kinda cool. __________________ 116520 Black - 116500 White - 116713LN - 116613LB - Panerai 389 - Chopard Mille Miglia GMT Chronograph - Chopard LUC Sport 2000 - Moser Pioneer Centre Seconds

11 March 2010, 12:56 AM	#2
WatchnRoll "TRF" Member Join Date: Feb 2010 Location: Florida Posts: 538	Because...it's a Rolex! Actually I don't know the answer but that just seemed appropriate.

11 March 2010, 12:58 AM	#4
The GMT Master "TRF" Member Join Date: Jul 2008 Real Name: Chris Location: England Posts: 8,149	The only Rolex in the current line up where you can actually feel the rotor moving is on the Daytona. But even still, shows just how smooth the mechanism is on a Rolex movement

11 March 2010, 01:02 AM	#5
DM101 "TRF" Member Join Date: May 2008 Location: Singapore Posts: 901	Tested: DAYTONA - yes (wound, wound sound) EXPLOER 1 - yes (click click sound) 14060M - yes (same as EXP 1) The REST (faintly can hear the rotor) GMT2c SS and TT - Both No Exploerre 2 - No DateJust - No 16610 - No Oyst Perpual 21mm - No

11 March 2010, 01:11 AM	#10
Rolesor "TRF" Member Join Date: May 2009 Real Name: Brandon Location: Toronto, ON Watch: 116234 Posts: 4,141	never noticed that when trying them on! Very cool!

11 March 2010, 01:17 AM	#12
wegeman76 "TRF" Member Join Date: Jul 2009 Real Name: Luigi Location: glenview Watch: Rolex GMTIIC Posts: 224	lol That is true JJ would know, he knows evrything

11 March 2010, 01:42 AM	#15
ersnyder 2024 Pledge Member Join Date: Jul 2009 Real Name: Eric Location: Long Beach CA USA Watch: Rolex Explorer II Posts: 4,102	You don't hear it on the SD either. It's VERY noisy on my PAM 90 and a little on my Roadster and Tank.

11 March 2010, 01:44 AM	#16
Nairn1980 "TRF" Member Join Date: Jan 2010 Location: UK Watch: GMT Posts: 8,338	Didnt know the Daytona made a noise, but just listened to mine very carefully and I can hear it :)

11 March 2010, 01:46 AM	#17
NavitimerNut "TRF" Member Join Date: Feb 2009 Real Name: Caleb Location: California Watch: Rolex 1500 Posts: 1,295	I tried on a watch with an ETA movement, and at an arms length away, I could hear the rotor grinding and making so much noise, I thought it was broken. On the other hand, I tried on a GMT and I was suprised how smooth and quiet the movement was.

11 March 2010, 01:57 AM	#19
JEC Member Join Date: Feb 2010 Real Name: J. Location: Montreal Watch: Speedmaster Pro Posts: 232	As far as I know, it's because Rolex uses a lighter and more balanced rotor combined with a narrower winding pinion. The gearing is higher, so it takes less rotation to wind, and doesn't need as much momentum. But that's the weakness, because the pinion is narrower it's more fragile and more easily affected by shocks.

11 March 2010, 02:00 AM	#20
sparky_magoo Member Join Date: Jan 2010 Real Name: Mark Location: RENO Watch: Deep Sea Posts: 64	I used to have an Omega Seamaster Chrono. I could feel the rotor spin and it always bothered me. My DOXA and both of my Rolexs are silent.

11 March 2010, 02:04 AM	#21
wegeman76 "TRF" Member Join Date: Jul 2009 Real Name: Luigi Location: glenview Watch: Rolex GMTIIC Posts: 224	Weak point not to sure about that I have seen rolex last for 20 years with no service

11 March 2010, 03:56 AM	#22
clarencek "TRF" Member Join Date: Apr 2009 Location: New York Posts: 400	Asked this same question a while ago and got some great answers about the different rotors used in the Daytona vs the sub: http://rolexforums.com/showthread.php?t=87561

11 March 2010, 04:01 AM	#23
Rscmaine "TRF" Member Join Date: Feb 2009 Real Name: Nat Parkinson Location: Maine, USA Watch: me pull a rabbit.. Posts: 1,196	Hell, I can't hear the rotor on my *lawn mower* - your expect me to hear my watch? __________________ When the alien spaceships actually landed, to everyone's surprise, it turned out that the world's governments had not been hiding anything. They were just as clueless as the rest of us!

11 March 2010, 02:29 AM	#24
Arrgo "TRF" Member Join Date: Jan 2010 Real Name: Alan Location: Wet coast, Canada Watch: A few, yes Posts: 368	Omega - Ball bearings - noisy as a locomotive Rolex - Bushing - quiet as a mouse Cheers __________________ Experience is something you don't get until just after you need it. - Steven Wright

11 March 2010, 02:36 AM	#25
snow_rocks Banned Join Date: Feb 2009 Real Name: Rick Location: At what TIME?!!! Watch: the SKY tonite! Posts: 3,225	If I hold my 1680 up to my ear and rock it back and forth, I can hear the rotor settle down, but not on my EX1. Where's the WD-40?

11 March 2010, 04:33 AM	#26
Thomas Banned Join Date: Jul 2007 Location: USA Posts: 625	How long before someone gets out a stethescope to listen to their rotor?

11 March 2010, 02:32 AM	#30
CorruptedSanity Member Join Date: Nov 2008 Real Name: Saif Location: Abu Dhabi, UAE Watch: AP Posts: 402	Excellent mechanism? You can't hear it because its a Rolex? Hehe let's not kid ourselves guys. Because this would then make my Audemars Piguet Royal Oak inferior because a reasonable flick of the wrist will send the rotor into a healthy whizz. And this is from a famed 2120 movement too The same theory applies to the Jaeger LeCoultre Reverso movement. I wo ndered why my Milgauss GV rotor was silent too. I assumed because of the robust case/cage utilized to make it anti-magnetic.

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