Pianotech

  • 1.  Piano string broken at hitch pin

    Member
    Posted 06-13-2017 06:52
    There is plenty of information and instructions on tying a broken wound
    string at the top (tuning pin) end. I found the missing piano string in
    the bottom of an upright with the tuning pin coil still intact, but was
    missing the hitch pin loop (loop was long gone, I looked). The problem
    is trying to calculate the right length of new string at the hitch pin
    end so the winding of the bi-chord string is close to it's neighbor at
    the other (tuning pin) end and is clear of the bridge pins. I tried to
    form a new hitch pin loop and tied a knot to the string, but my guess
    was off by about a quarter inch (too long) and the knot ended up in the
    middle of the bridge. I removed the string and left it at the bottom of
    the piano for another day. Of course I could always order another
    string for the nearly 50 year old Story and Clark, but was trying to
    effect a less expensive solution.


  • 2.  RE: Piano string broken at hitch pin

    Registered Piano Technician
    Posted 06-13-2017 14:52
    Mr. Shearer,

    I just had this happen to me yesterday morning. Thankfully the local chapter meeting was last night, so I posed the very question that you asked. 

    The consensus was that, because the string didn't break at the tuning pin end, it was probably defective in the first place and finally popped. I was advised to get a new string. Even though it is possible to splice it, unless it is an emergency, it will probably break again as soon as it's brought up to pitch. This time with all the time, effort and frustration that you put in behind it. 

    If you have to make a return trip anyway, you might as well order the new string and install that instead of splicing. 

    Hope this helps,

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



  • 3.  RE: Piano string broken at hitch pin

    Registered Piano Technician
    Posted 06-13-2017 15:51
    If the "easy" fix doesn't go well, the fiddling can cost you more than just replacing it would. It depends partly on what you have decided your hourly wage for repairs is.

    ------------------------------
    Susan Kline
    Philomath, Oregon
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  • 4.  RE: Piano string broken at hitch pin

    Registered Piano Technician
    Posted 06-13-2017 16:37
    My experience is also only trial and error. Sometimes this is associated with flood damage, so I would take a good look for corrosion on the strings as well as rust on the casters.

    ------------------------------
    Peter Stevenson RPT
    P.S. Piano Service
    Prince George BC
    250-562-5358
    ps@pspianoservice.com
    ------------------------------



  • 5.  RE: Piano string broken at hitch pin

    Registered Piano Technician
    Posted 06-13-2017 16:47
    I've found that long tenor strings can break at the hitch pin if they are corroded by rodent urine.

    You know, it's been awhile since I've had to work on a severely mouse-infested piano. I don't miss it.

    ------------------------------
    Susan Kline
    Philomath, Oregon
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  • 6.  RE: Piano string broken at hitch pin

    Registered Piano Technician
    Posted 06-14-2017 09:19
    I performed this repair several times.  Usually the string broke either at the hitch pin or due to rust forming in the string braid.  The trick is to tie the knot  first and then assume you will lose at least 1/4 inch in length when  everything is tightened up. I use a jig that allows me to set the tail loop very accurately.  That being said I have had to make the tail repair twice to get it right when  everything was brought up to pitch.

    ------------------------------
    Norman Cantrell
    Piano Clinic
    Lawton OK
    580-355-5003
    ------------------------------



  • 7.  RE: Piano string broken at hitch pin

    Member
    Posted 06-15-2017 05:35
    Thank you Norman. Please describe (or better yet, attach a photo) your
    jig.