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Thread: Hauck clock

  1. #1
    Registered user. Nicko's Avatar
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    Default Hauck clock

    S/n 36674, plate 1607, 3 ball pendulum no26, Suspension Horolovar .0038" (.097mm).

    It has a very small pendulum rotation.
    Anticlockwise rotation beat at 30º, overswing to 60º
    Clockwise rotation beat at 45 overswing to 90º.

    The pallets contact the EW teeth right on the corner of the lock face & the impulse face.
    Looses 1 hour in 12.

    What to do to increase swing and have the pallets contact further up on.
    The timekeeping is way out, different suspension maybe?

    Look forward to you suggestions

    Cheers

  2. #2
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    Default Re: Hauck clock

    Quote Originally Posted by Nicko View Post
    S/n 36674, plate 1607, 3 ball pendulum no26, Suspension Horolovar .0038" (.097mm).

    It has a very small pendulum rotation.
    Anticlockwise rotation beat at 30º, overswing to 60º
    Clockwise rotation beat at 45 overswing to 90º.

    The pallets contact the EW teeth right on the corner of the lock face & the impulse face.
    Looses 1 hour in 12.

    What to do to increase swing and have the pallets contact further up on.
    The timekeeping is way out, different suspension maybe?

    Look forward to you suggestions

    Cheers
    Hi Nicho, I am not familiar to your clock. I can only make some suggestions based on my experiences.
    To increase the pendulum rotation, you need to do the followings:
    1. take out the main spring to clean. The main spring should be clean with 3M or steel wool,
    2. All the pivot holes and pivots need to be cleaned. You can use tooth pick to clean the pivot holes.
    3. Use correct size suspension spring,
    4. Fine tune the escapement, so the EW teeth land at the lock face instead of impulse face. Locking should not be too deep.
    5. Fine tune the position of the fork to maximize the rotation but still keep enough over swing. Keep in mind, over swing will decrease with the unwind of the main spring.
    6. Fine tune the beat to get them as even as possible.
    To me, above are the basic procedures to be done for each clock.
    Hope it help.
    I am sure many professional clock repairers and makers here will lend their hands to help you.
    Ming

  3. #3
    Registered user. MartinM's Avatar
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    Default Re: Hauck clock (By: Nicko)

    These clocks run pretty deep into the escape wheel.
    If you manually manipulate the anchor to one side and then bring it to center, where is the EW tooth in its travel across the impulse face of the pallet? It should be about 25% into the full impulse. Same for the opposite direction.
    If that looks good, move on to getting the clock into beat by turning the suspension in its mount, slightly.
    Then look at how much rotation and overswing you have. Correct by raising or lowering the fork on the suspension spring. Moving down increases overswing and reduces rotation. Too far down and you'll get flutter, which will make the clock appear to have too strong of a suspension spring.
    If you're not getting flutter and it's still fast, you'll need to thin the spring or go down in size.
    Living life at eight beats per minute.

  4. #4
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    Default Re: Hauck clock (By: MartinM)

    Are the escapement teeth landing on the lock side of the knee
    or the impulse side of the knee?
    Have the pallets or depthing been fiddled with?
    Running slow is almost always the wrong spring size for that
    particular bob. ( if the loss rate is consistent )
    I'd get it running well first before I attacked changing the suspension spring.
    Tinker Dwight

  5. #5
    Registered user. Nicko's Avatar
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    Default Re: Hauck clock (By: marylander)

    Hi Marylander, Thankyou for your reply.
    The clock has been dismantled, cleaned in an ultrasonic cleaner and reassembled, including the main spring which was dry and lacking in lubrication. The pivot holes have been cleaned by using tooth picks.
    I'm not sure about the suspension spring, there are no listings for Hauck clocks. A Horovolar .0038" is currently fitted but I have others .0035 and .0033.
    I have raised the pallets using the eccentric mounting. The lock on both pallets has been deepened.

    Now, the point of the entrance pallet lands on the tip of the EW tooth that is entering the movement. At this point the escapement is locked with the teeth not being able to move backwoods or forwards.

    Its difficult to photograph and the see the wheel in the photograph

    Cheers
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  6. #6

    Default Re: Hauck clock (By: Nicko)

    It's usually a mistake to alter the eccentric setting. I can't see the pallets in your pic.
    A man with a clock always knows the time. A man with two clocks is never sure.

  7. #7
    Registered user. Nicko's Avatar
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    Default Re: Hauck clock

    Hi Martin, Thanks for your reply.
    I'm not sure where the centre point would be now. The suspension midpoint has been altered to bring the static position to the centre of its swing. I'll have another look at that.

    Hi Tinker, Thanks for your reply.
    The pallets land pretty much on the corner of the two faces, although now that the pallets have been raised the pallets land on the locking face. Yes the pallets have been fiddled with.

    Hi Shutterbug, thanks for your reply.
    Yes I know that it is usually mistake, but I think it was the right thing to do in this case. I am prepared to be proved wrong.
    I can't see the pallet in the photo either. Maybe I'll sketch it up and scan it.

    Cheers

  8. #8
    Registered user. Nicko's Avatar
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    Default Re: Hauck clock (By: Nicko)

    Shutterbug,
    If you have a look at fig10 on page 46 of the 10th edition of the guide, the tooth has just gone past the entrance pallet. On two of my EW teeth, the entrance pallet actually strikes the tooth at C, sitting right on the point and locking up the escapement.

  9. #9

    Default Re: Hauck clock (By: Nicko)

    Yeah, big problem there, Nicko. Locks are set in two ways. The first is by manipulating the distance between the pallets, and the second is by moving the eccentric. The eccentric is usually accurately set at the factory and I've never seen the need to change one. There may be an issue with something being inserted into the clock from a donor movement. A video of it running would sure help
    A man with a clock always knows the time. A man with two clocks is never sure.

  10. #10
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    Default Re: Hauck clock (By: Nicko)

    Hi Nicko, The main spring can not be cleaned by Ultrasonic cleaner. You have to take the spring out of barrel and clean. The old main spring surface are saturated with dry oil like varnish. If the spring is not cleaned, the friction between each turn will reduce the output power. Lack the power will reduce the pendulum rotate. As long as the EW teeth land at the locking faces about 1-1.5mm to the transition point, it will be fine. Do not let them land too deep. It will loss power if EW teeth land to deep.
    Ming

  11. #11
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    Default Re: Hauck clock (By: marylander)

    The eccentric should only be set to adjust the drop distances.
    One would move the pallets to keep the drops onto a lock surface
    while adjusting the drops.
    The eccentric effects both the drops and lock but is not the right way
    to adjust the locks.
    The amount of lock should be minimal at the instant of drop. You can only
    check the lock by rotating the bob as the fork and suspension spring also
    effect where the tooth lands on the lock surface ( this is unlike any other
    dead beat you may have worked on ).
    Tinker Dwight

  12. #12
    Registered user. Nicko's Avatar
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    Default Re: Hauck clock (By: marylander)

    Hi Marylander, Thanks for your reply.
    As you say the main spring is never cleaned in my Ultrasonic. They stretched out and are cleaned separately using solvent and a cloth, then lubed with Keystone Mainspring Lubricant.

  13. #13
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    Default Re: Hauck clock (By: Tinker Dwight)

    Hi Tinker, Thanks for your reply.
    Both of the pallets were landing on the corner of the impulse area and the locking faces. I did (maybe incorrectly) raise the eccentric to get the pallets to land on the locking face. I think this was partially successful but has introduced other errors. What is the error called when the entrance pallet only just clears the entrance tooth?
    I'll try again with a photo. As you can see the entrance pallet has landed on the tip of that marked tooth. The EW runs CCW in Hauck clocks. Also it only does this for 2 teeth. That would indicate a distorted tooth. Bit I can't see it. I've checked the tooth angles against a template, I've put it into a lathe collet and checked the length of the teeth with a clock gauge. How do I get that tooth passed the pallet.

    Cheers

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  14. #14
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    Default Re: Hauck clock (By: Nicko)

    If a couple of teeth are higher, it may indicate the bent pivot. You can check the truth of the pivots. Just a thought.
    Ming

  15. #15
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    Default Re: Hauck clock (By: marylander)

    On the escapement wheel, two things can happen to jam
    the wheel.
    One can be that the tooth height is off and the other is that
    the spacing between teeth is off.

    Please got back and adjust the eccentric correctly. Adjust it
    for the drops and not for the locks. You will have issue as long
    as it is not corrected. If it is wrong you will be wasting time.
    The teeth are suppose to land right at the edge but on the
    lock side of the corner and not on the impulse face. This is
    adjusted by sliding the pallet in or out of the anchor, not
    by adjusting the eccentric. The fork height also effects this some.
    Tinker Dwight

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