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Bechstein Jack Spring Cord Replacement

  • 1.  Bechstein Jack Spring Cord Replacement

    Posted 30 days ago
    Yesterday I came to a Bechstein that had many "sticking keys." After fixing what I could I realized the jack spring cords had broken on some notes, and that was the cause of the problem. Any idea how long the job would take if we decide that all (or the majority of) the cords need replacement?

    Also, any tips for that job, from those of you who've done it before?

    Thank you,

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    Benjamin Sanchez
    Professional Piano Services
    (805)315-8050
    www.professional-piano-services.com
    BenPianoPro@comcast.net
    ------------------------------


  • 2.  RE: Bechstein Jack Spring Cord Replacement

    Posted 30 days ago
    They're generally called silk loops. Perhaps someone in your local chapter can do a clinic on that.


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    Steven Rosenthal
    Honolulu HI
    808-521-7129
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  • 3.  RE: Bechstein Jack Spring Cord Replacement

    Posted 30 days ago
    Joe Garrett in his "G Piano Works" labor guide suggests 8 hours for a set.

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    Terry Farrell
    Farrell Piano Service, Inc.
    Brandon, Florida
    terry@farrellpiano.com
    813-684-3505
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  • 4.  RE: Bechstein Jack Spring Cord Replacement

    Posted 30 days ago
    If you use a standard labor calc, and don't include all the collateral processes, especially in a Bechstein,  but in my opinion, with any process or any piano, you will be taking this on as unpaid life's work.

    To remove the whips, you need to remove the stickers from the key pivots...no capstans. This takes time, and you may break something, as a first timer, second timer or 10th timer. Then after you safely extract the whips, and do your repair, you will have to re-install the stickers...more time. Then comes the fun part. You then get to adjust the hammer line...which is, by the sound of it, way out of regulation. Adjusting the hammer line the first time, on a Bechstein is an 8 hour exercise. I have gotten it down to an amazing whirlwind of 2.5 hrs, but first time you may well be pushed to your frustration limit. You need a special tool (jurgen has it), so that gets added to the bill.

    Bechsteins, because they are so hard to deal with, are mostly way out of regulation and not serviced regularly or at all. Beware...this is only the tip of the iceberg. It probably needs an entire action restoration.

    The only way I do anything on Bechsteins, which I have successfully completely restored, is to charge the appropriate Bechstein up-charge of budget estimate, times two, times two again.  Proceed with vigilance. I probably will never restore one of these again.

    They are amazing actions when in good condition and well regulated, but go in with eyes wide open.



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    Jim Ialeggio
    grandpianosolutions.com
    Shirley, MA
    978 425-9026
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  • 5.  RE: Bechstein Jack Spring Cord Replacement

    Posted 29 days ago
    Thank you everyone. Thankfully this Bechstein has normal capstans. I spoke with one tech who showed me a traditional Bechstein whippen this morning. So glad I don't have to deal with that. 🙂

    I'm wondering if someone didn't redesign the action at some point in time. Most of the piano is in excellent condition. It needs a little touch up regulation, which I'll be able to do just as easily as on a Steinway. And no, I'm sure it's not a different brand. Aside from the name on the plate and fallboard, it has the extra thick agraffes in the treble - a telltale sign of a Bechstein.

    Thanks!

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    Benjamin Sanchez
    Professional Piano Services
    (805)315-8050
    www.professional-piano-services.com
    BenPianoPro@comcast.net
    ------------------------------



  • 6.  RE: Bechstein Jack Spring Cord Replacement

    Posted 30 days ago
    Is it the upright flange cord?
    It appears there is a butt plate
    screw, not unlike Yamaha.

    You could probably use the method
    for Yamaha to replace all those cords.

    This Bechstein rebuild link shows all
    the parts....pretty amazing....and good
    to see his jigs for various things....

    http://www.aatuners.com/bechstein-refurb.html

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    Richard Adkins
    Piano Technician
    Coe College
    Cedar Rapids, IA
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  • 7.  RE: Bechstein Jack Spring Cord Replacement

    Posted 29 days ago
    I had to read down through several posts to find out that this thread is about a
    grand action. Please always specify the piano in your opening post.  There are many Bechstein uprights with jack spring cords loops. There are a few tricks to working with those actions but I will not divert this thread with that discussion.

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    Jurgen Goering
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  • 8.  RE: Bechstein Jack Spring Cord Replacement

    Posted 28 days ago
    Yes, totally right. It's a Bechstein A, roughly 6' grand. Thankfully it has a "standard" grand action with the common capstans.

    Two more questions. One, what type of glue would you recommend for gluing in the new jack cords? (I apologize if I keep calling them by the wrong name, but the correct one escapes my mind at the moment.)

    Two, anyone have an idea where to find the correct serial number? It's not printed on the plate. The hammer rail has 617156 printed on it, the keys have 2130 printed on the lower two, and I think there was another somewhere as well, but don't remember for sure.

    Judging by the case parts (Victorian style legs and only two pedals), I'm inclined to think that 2130 is the correct number, as that would place the piano in 1867. The number on the hammer rail doesn't exist yet according to the online piano atlas.

    Anyway, thanks again everyone,

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    Benjamin Sanchez
    Professional Piano Services
    (805)315-8050
    www.professional-piano-services.com
    BenPianoPro@comcast.net
    ------------------------------



  • 9.  RE: Bechstein Jack Spring Cord Replacement

    Posted 28 days ago
    Bechstein serial # or case numbers are very confusing. There are beautifully carved numbers all over the place, leading one to chose which ever number tickles their fancy. I never figured what number, if any, was a serial number on the B I worked on. ​

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    Jim Ialeggio
    grandpianosolutions.com
    Shirley, MA
    978 425-9026
    ------------------------------