Will every ETA/Valjoux 7750...

Thread: Will every ETA/Valjoux 7750...

Page 1 of 5 1 2 3 4 5 LastLast
Results 1 to 10 of 47
  1. #1
    Member X2TIME's Avatar
    Join Date
    Mar 2010
    Location
    Montreal
    Posts
    97

    Will every ETA/Valjoux 7750...

    ...always display that wobbling or whirring characteristic? Also, how is this wobble brought about, do you have to shake the watch, does it occur during normal wear, does it only occur at certain levels of winding or power reserve?

    Thanks...
    Christofer

  2. #2
    Member Tragic's Avatar
    Join Date
    Feb 2006
    Location
    Cincinnati
    Posts
    13,407

    Re: Will every ETA/Valjoux 7750...

    I've had several 7750's and I never felt/noticed that.
    "Time is the school in which we learn. Time is the fire in which we burn."

  3. #3
    Member watch-man7777's Avatar
    Join Date
    Feb 2007
    Location
    Massachusetts
    Posts
    4,439

    Re: Will every ETA/Valjoux 7750...

    I think it might depend on how chunky/thick the case of the watch is. I had a Hamilton Aviation Chrono which houses a Val. 7753 and at times I could feel the rotor moving while wearing the watch. I kind of liked it though.
    -Jarrod


  4. Remove Advertisements
    WatchUSeek.com
    Advertisements
     

  5. #4
    Member hpark21's Avatar
    Join Date
    Oct 2007
    Location
    Born in South Korea - Canadian citizen - Living in Philly Suburb
    Posts
    5,494

    Re: Will every ETA/Valjoux 7750...

    Quote Originally Posted by X2TIME View Post
    ...always display that wobbling or whirring characteristic? Also, how is this wobble brought about, do you have to shake the watch, does it occur during normal wear, does it only occur at certain levels of winding or power reserve?

    Thanks...
    7750 has single directional winding mechanism.

    Which means, it will wind the watch in only 1 direction.

    However, weight will rotate in both directions. Since winding mechanism does NOT engage in one of the directions, depending on your wrist movement, a quick jerk may cause the winding rotor to go into free spin (in non-winding direction) causing the whole watch to wobble due to the fact that it swings VERY quickly.

    This will be felt mostly on lighter, less bulkier watches.
    Chronic flipper...


  6. #5
    Member X2TIME's Avatar
    Join Date
    Mar 2010
    Location
    Montreal
    Posts
    97

    Re: Will every ETA/Valjoux 7750...

    Quote Originally Posted by Tragic View Post
    I've had several 7750's and I never felt/noticed that.
    Well, how many is several? And you never felt any vibration from the movement; you have heard of this characteristic, though, haven't you?
    Christofer

  7. #6
    Member X2TIME's Avatar
    Join Date
    Mar 2010
    Location
    Montreal
    Posts
    97

    Re: Will every ETA/Valjoux 7750...

    Quote Originally Posted by hpark21 View Post
    7750 has single directional winding mechanism.

    Which means, it will wind the watch in only 1 direction.

    However, weight will rotate in both directions. Since winding mechanism does NOT engage in one of the directions, depending on your wrist movement, a quick jerk may cause the winding rotor to go into free spin (in non-winding direction) causing the whole watch to wobble due to the fact that it swings VERY quickly.

    This will be felt mostly on lighter, less bulkier watches.
    Yes, this is what I had read. So you are saying it will be inherent to all watches housing a 7750, but you would feel it more on a less bulky watch, correct?

    Is there any other type of movement, that will display these vibration characteristics, other than the free spin of a tumbler in a uni-directional winding mechanism? I ask because I remember holding a watch, but I can't remember the make or model, and I remember holding it in my palm and it started to vibrate in my hand and I thought it was the coolest thing ever, but I don't recall shaking it vigorously to achieve this result.

    Thx for your input.
    Christofer

  8. #7
    Member hpark21's Avatar
    Join Date
    Oct 2007
    Location
    Born in South Korea - Canadian citizen - Living in Philly Suburb
    Posts
    5,494

    Re: Will every ETA/Valjoux 7750...

    You do not need to shake it vigorously, Just 1 quick jerk is enough.
    Chronic flipper...


  9. #8
    Member lysanderxiii's Avatar
    Join Date
    Oct 2006
    Location
    N 32 deg, 47' 27.9168"; W 79 deg, 54' 30.3372"
    Posts
    8,842

    Re: Will every ETA/Valjoux 7750...

    Quote Originally Posted by X2TIME View Post
    Is there any other type of movement, that will display these vibration characteristics, other than the free spin of a tumbler in a uni-directional winding mechanism? I ask because I remember holding a watch, but I can't remember the make or model, and I remember holding it in my palm and it started to vibrate in my hand and I thought it was the coolest thing ever, but I don't recall shaking it vigorously to achieve this result.
    The ETA 2000-1, 2004-1 and, I assume, the 2094 do this, but as they are 10.5''' movements, the effect is very slight.

    The Miyota 8205/15, although unidirectional winding, do not exhibit this phenomenon because there is too much drag on the rotor from the reverse pawl to allow the rotor to get spinning fast.
    familiaritas parit contemptum; raritate admiratione wins.- Lucius Apuleius
    est necessry, accurate ad secundo? - Lysander magna
    iustum est horologium - Obscurus Genius

  10. #9
    Member
    Join Date
    Jul 2007
    Location
    Northern California
    Posts
    9,059

    Re: Will every ETA/Valjoux 7750...

    Which direction winds the 7750 & the Miyota 8215? Clockwise or counter?

  11. #10
    Member FlyPenFly's Avatar
    Join Date
    May 2009
    Location
    San Diego, CA
    Posts
    1,803

    Re: Will every ETA/Valjoux 7750...

    I've noticed the wobble in either direction even in the best made 7750s under 10,000.


Page 1 of 5 1 2 3 4 5 LastLast

Thread Information

Users Browsing this Thread

There are currently 1 users browsing this thread. (0 members and 1 guests)

    Posting Permissions

    • You may not post new threads
    • You may not post replies
    • You may not post attachments
    • You may not edit your posts
    •