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Tuning Repairing, and voicing a Yamaha P22 from 1984

  • 1.  Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 15 days ago

    Hey everyone! It's been a while since my last post of beginning my Journey!

    I have recently purchased a Satin Walnut Yamaha p22 from 1984 for $400 ($900 after getting it moved to my house) to use as a learning instrument for tuning, regulation, voicing, and repair while having Daniel (or Dan) Reed helping me out little bit (Mostly on the phone) since I do live pretty close to him. 

    So far the problems I've found on the piano (other than it being 30 cents out of tune) is the spring cords on all keys which I plan on replacing in the future, just need to find and buy the right materials and supplies for the job, though I'm not sure where or who to buy them from and what material is best for replacing spring cords of this model.

    The hammers do have some grooves (roughly 1-1.5 millimeters deep) and some of them weren't spaced properly when the 1st owners of this piano played for several years (the grooves on some of the hammers formed with improper spacing), a few of them that sound harsh/tinny, and to some that play Mezzo forte when trying to play Forte/Fortissimo. 

    There were some mouse droppings in the piano , but thankfully not much damage was done by the mice (Except a bit of missing felt at the tenor strings in the treble bridge)

    There is a little bit of minor cosmetic wear (Scratches and tiny chips) on the piano and some surface level rust in some places inside and outside the piano (Which will also be shown in pictures).

    The piano did tune nicely, no strings snapped while raising the pitch and had no problem overpulling the strings to let the string tension settle.

     Some new felt definitely needs to be put in for the pedals since the original felt deteriorated.

     

    I'd like to hear thoughts on how I could make this piano better both functionally and aesthetically (But more importantly on function and sound). 

    This is my first time doing something Like this so I'd rather approach with caution, looking for resources, and ask for help instead of diving into something I'm not familiar with yet.

    Overall, I'm pretty happy I bought this piano with the help of Dan Reed and Brian Janey (From San Diego Chapter). 

    I also do have images in pdf form.

    If I made any mistakes with what I said in the post, criticism would be appreciated!  



    ------------------------------
    John-Paul Karas
    Murrieta CA
    (951) 240-1440
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  • 2.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 15 days ago

    Hi.  Fellow SD Chapter member.  Take a look in the Archives here and look up replacing the loops on Yamaha upright pianos.  There have been many posts on this topic for years.  I use a fine braided fishing line for this job, but you can get the original silk thread from Yamaha or similar from supply houses.

    Since you'll be removing the hammers anyway, you can sand the hammers to remove (mostly) the grooves.  Don't remove the grooves completely, but of course if they were misaligned, you might want to.  The "tinny" sound can be voiced with needling, but it will be difficult since the felt is so dense.  In the past, I have tried using acetone to soften hammers.  Steaming is another method, but it's easy to go too far and Yamaha doesn't approve of it.  If you go too far, they're toast.  If you have the budget, you could replace them, if even for the experience.

    Improving the appearance, I've had good experience with Howard's Restore-A-Finish.  Get it at Home Depot in the paint section.  Comes in different shades to match the wood color.  Wipe it on with a rag, wipe off the excess, you're done.

    Yes, replace whatever felt  is deteriorated.  Look at the damper rods.  They have rubber grommets where they attach to the action.  Likely the rubber is brittle, so replace the grommets to keep the noise down.  LIkely the brass is tarnished or spotty, so use some Brasso, or Flitz or whatever, either with a rag or fine steel wool to shine it up.  The fallboard hardware is probably loose, so there's that.  And all the regulating, leveling keys, replacing the key bushings, etc., are all a good learning experience.  If you want to replace the keytops, it's easy on a Yamaha because the keys are all cut exactly to fit, not much filing needed if you use their keytops.  

    Good luck, have fun.



    ------------------------------
    Paul McCloud, RPT
    Accutone Piano Service
    www.AccutonePianoService.com
    pavadasa@gmail.com
    ------------------------------



  • 3.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 14 days ago

    Hi paul! Thank you so much for this advice you've given me. I'll be to sure to look in the archives to find the methods of replacing spring cord loops for the piano as well as sanding/filing the hammers.

    I have checked the rubber grommets for all 3 pedals, none of them have them are brittle and the feel of them are almost like new! The only noise I've noticed from the damper rods were the felt punchings at the bottom of the rods.

    Other than that I appreciate the tips for everything you gave me and hope the best comes out of this project!



    ------------------------------
    John-Paul Karas
    Murrieta CA
    (951) 240-1440
    ------------------------------



  • 4.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 15 days ago

    Hi,

    In my opinion, I would start with replacing the hammer spring cords. I believe what you need is Schaff's #932W. If you don't yet have a Schaff account, contact them to set up one. Search the Journal index for the article by Jeff Hickey. The method differs slightly, depending on whether your pianos hammers are attached by small plates with screws or whether they are screwed in from the front. (The former is easier to deal with.) 

    You will need an action cradle. My preference would be to remove all the dampers, then the hammer rest rail. This will make it much easier to file the hammers, which really need it. Personally, I would get rid of the grooves--just don't take off any more felt than necessary. 

    The piano probably needs regulation, but you will be unable to regulate it if until those springs are replaced, and filing the hammers will make it sound 100% better.

    Buy the PTG's vertical regulation workbook and get to work if you have all the necessary tools and supplies.



    ------------------------------
    Scott Cole, RPT
    rvpianotuner.com
    Talent, OR
    (541-601-9033
    ------------------------------



  • 5.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 15 days ago

    Besides what's already been said, the lack of volume is likely due to the regulation, specifically let-off. You'll notice an incredible improvement when this is regulated, both in the loudest and softest dynamic ranges. IMO, this is a great learning instrument, good luck!



    ------------------------------
    Tim Foster RPT
    New Oxford PA
    (470) 231-6074
    ------------------------------



  • 6.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 15 days ago

    John-Paul,

    I would highly recommend you use Yamaha flanges with cords. They almost all fit without fussing around with alignment. They're not expensive; about $100 for a set when I bought them a few years ago. I tried another brand many years ago and I found I spent a lot of time spacing hammers. That's an arduous task when you find that you must remove the flange/hammers assembly many times to reshape the flange for proper alignment.  



    ------------------------------
    Roger Gable RPT
    Gable Piano
    Everett WA
    (425) 252-5000
    ------------------------------



  • 7.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 14 days ago

    John-Paul, while the suggestions above are all excellent, for the purposes of gaining experience I would recommend that you file and shape the hammers while they are in the action and that you get the silk loop string from Schaff, you might try Pacific Piano Supply also, and replace them yourself. One of the basic aspects of action work is that it's X times 88. This piano is a good chance to build up the stamina and rhythm for this type of work and a sense of how everything is 'scaled' (from big to small). This is a really good piano to work out on because you will be rewarded with a fairly nice instrument when you're done. 

    There is a metal rail directly behind the dampers with a strip of felt on it, it helps to remove the rail as it allows you to tip the hammers farther forward for different operations.

    Howard Piano Industries has a lot of good instructional videos too, here.



    ------------------------------
    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
    ------------------------------



  • 8.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 14 days ago

    You do make a good point when it comes to shaping in the hammers while they're in the action. I do think it'll be really beneficial experience to train my stamina and rhythm to get the job done consistently.

    I'm about to head to Home Depot to buy some sandpaper sheets of varying roughness for shaping each hammer individually while also using a single file if that's the best way to go for this procedure.

    I just recently submitted an application for Schaff to buy some supplies including the ones you mentioned. 

    I did test some of the butt flanges and they did have a little bit too much motion in them (Did a swing test and swung 10-15 times) but have little to no side to side movement.  

    This piano model does not have a hammer butt plate and the screws to keep the butt flanges secure to glue the loops, which to my understanding probably means I would have to remove each center pin from the flange on all 88 hammer butts to Glue every single Loop (Unless there's a method of doing it without removing the center pins from the flange) 
    I'm not sure if reinserting those Center pins would the best idea because of the Excessive motion And would have to result to buying Center pins of different sizes To fit the flanges back in, Leading to a A lot of hassle in buying many different supplies through  Schaff (Or a different piano supply store) while making the repair process much longer, 

    Do you think it might be an easier option if I just bought the Yamaha butt flanges with the chords on them to alleviate the extra hassle?

    Overall I really do appreciate the help Steven, and all the other techs suggestions above.



    ------------------------------
    John-Paul Karas
    Murrieta CA
    (951) 240-1440
    ------------------------------



  • 9.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 14 days ago

    John-Paul, if you are an aspiring piano technician you will need those tools and supplies. If this is more of a hobby or project, then maybe just get the replacement flanges. Either way you need to get your hands on a pin extraction/setting tool and replacement center pins. Putting the old pins back in isn't going to work, they will be looser than they already are. Or, it is possible to replace the silk loops with the flanges in place but that won't help with them being to loose already. Looks like you're at a crossroads here.



    ------------------------------
    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
    ------------------------------



  • 10.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 14 days ago

    My apologies Steven. I am wanting to be an aspiring piano technician. I'm just worrying a little too much on budget. I do believe Buying the supplies to build my inventory of tools and everything else in my kit will benefit me greatly in this profession.

     I definitely don't think of this as a hobby for myself, but a profession to achieve the best end results for a quality instrument.



    ------------------------------
    John-Paul Karas
    Murrieta CA
    (951) 240-1440
    ------------------------------



  • 11.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 12 days ago
    I would also make sure to tighten the butt plate screw well before you try the swing test of the center pin friction. If it’s loose, it will give you a false reading.

    Even if you buy new flanges from Yamaha, you should check the center pins’ friction. Even new parts are not always where you need them to be. The last time I used new flanges from Yamaha the bushings were very fluffy and not cut very well. You will have to space the hammers as well, so if you shape the hammer heads, you can make your life a little easier so you’re not fighting old grooves in the hammerhead trying to align to the strings with new flanges.

    As others have said, this is a great opportunity for learning and if you’re interested in Piano technology work, this is the place to build it, working.

    Good luck

    Joe Wiencek
    NYC




  • 12.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 12 days ago

    Read! Butts have no plate.



    ------------------------------
    Larry Messerly, RPT
    Bringing Harmony to Homes
    www.lacrossepianotuning.com
    ljmesserly@gmail.com
    928-899-7292
    ------------------------------



  • 13.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 12 days ago
    You’re right Larry. I read too fast. I thought I read it has butt plates.

    A good piano to learn many skills on, including pinning and hammer spacing and traveling. Or flange cord replacement plus all of the above.

    Joe




  • 14.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    Since the silk cords  deteriorate over time  I don't understand the reasoning behind replacing the cords with more silk that will only deteriorate again.  Nylon, Dacron or even cotton will last at least 100 years and  might be a  much better replacement.  Braided fishing cast line is readily available and would  be a  good choice also.

    Since the flanges have seen a  lot of use and wear replacing the flange and cords is straight forward and simple.



    ------------------------------
    Blaine Hebert RPT
    Duarte CA
    (626) 390-0512
    ------------------------------



  • 15.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    Blaine: "Since the silk cords  deteriorate over time..."

    SILK does not deteriorate over time. Yamaha used something other than silk that turned out to be a failure, after 10 or 15 years the material degrades to the point where it turns to powder if you rub it between your fingers. Many pre WWII grands used 2 silk loops per whippen and most are still intact. 

    Some other modern manufacturers such as Samick have had some failures with the material they used for loops but none so much as Yamaha. But the Yamaha pianos are of such good quality otherwise that they promise to be long lived instruments and justify the expense of replacing them.  Imo.



    ------------------------------
    Steven Rosenthal RPT
    Honolulu HI
    (808) 521-7129
    ------------------------------



  • 16.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    I don't think silk is the problem.

    IIRC whatever Yamaha used that is now crumbling, was not silk, but rather some kind of cloth.

    I want to say Kawai did use the black silk cord in pianos of the same era (dunno what they use now?), and those are still going strong.



    ------------------------------
    Nathan Monteleone RPT
    Fort Worth TX
    (817) 675-9494
    nbmont@gmail.com
    ------------------------------



  • 17.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    I can't add much more than the already good advice others have  given.  Personally I would order a set of Yamaha flanges with cords and install them one at a time with the action in place, but  if you have an action cradle this job is  easier on a bench.  Shaping the hammers on an upright is harder than on a grand.  You can shape each hammer when you pull it out to replace the flange (or just the cord if you want to go that route) but you might have trouble getting consistency  between each hammer.  You could  also try gang filing the hammers  in place  with a strip of  coarse cloth-backed sanding material.  In the tenor and bass you can use a narrow strip (the cloth  material will tear easily into strips) to file the angled hammers.

    I make my own hammer filing sticks  from belt sanding material; any sanding belt is OK, I have used 60 to 120 grit, each grit has its advantages.  I glue mine onto  9  inch segments from a wood yard stick.  Some sanding belts have plasticized backs that are hard to get glue to stick well but contact cement usually works if other glues don't.  In a pinch any coarse sandpaper will work, but regular sandpaper wears out too fast.

    Have fun, but this looks to be a fairly simple and straight forward job, so don't get too  far from specifications or make any  drastic changes.



    ------------------------------
    Blaine Hebert RPT
    Duarte CA
    (626) 390-0512
    ------------------------------



  • 18.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago
    Blaine,
    I just did a cord replacement job recently and removed the dampers, damper stop rail, and hammer rest rail. This doesn't take too long, and filing the hammers is MUCH easier.
    Removing the dampers also makes it easier to install new cords.

    I also found that removing the dampers, which didn't take too long, made it easier to vacuum back there and to spray Prolube on the damper spoons.



    --
    Scott Cole, RPT
    Editor, PTG Journal
    Serving Southern Oregon and Northern California
    (541)601-9033








  • 19.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    I usually find that  my customers don't even realize that  the cords are breaking.  Selling a  $600 job on a  piano that  the customer though was fine can be tough, keeping the cost down becomes  an important part of the job and anything that can keep the time down helps.

    In a perfect world pulling the dampers, thorough cleaning and lubrication, hammer filing and regulation would be wonderful, but the $1000+ cost might be hard  to swallow for a family that just wants the 7 year old to take lessons.

    Most of these pianos are lucky to just get tuned.



    ------------------------------
    Blaine Hebert RPT
    Duarte CA
    (626) 390-0512
    ------------------------------



  • 20.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 13 days ago

    Paul-

    Please Wait a Moment! I disagree with the advice you're being given because it seems to me you have not learned the very basic skills upon which the string cord repair is compounded.

    Do you know how to replace a flange bushing and how to fit a center pin in a loose  or tight bushing to get proper resistance? You don't have the basic tools and supplies, so I don't think so. Get the tools and supplies and get your colleagues to give you a hundred or so various discarded hammer assemblies, take them apart and rebush them. See the PACE lessons and the Playground videos. (Get a set of Mannino broaches!)

    Have you ever filed a set of hammers? The basic skill is filing the hammers while they are installed in the action, because you want to shape them evenly. It's the way you will do them in the customer's home, not removing and filing them one at a time.Your hammers can be reshaped, but not too much. You need to work carefully so you don't take off too much felt. See the PACE lessons. Make some good sandpaper files and you'll be glad to have them many times. 

    Check the key bushings and replace them if necessary. Begin buying the tools and supplies for this, which can be a regular service you can offer.

    Align and fit the hammers to the strings and proceed with regulation. Understanding action function and regulation will be you most important diagnostic and service skill. It's where everything starts and ends, and it can always be improved. See the PACE lessons, Doug Neal's video in the Academy and the videos in the Education site.

    When you've learned these basic skills, you're ready to look at the flange cords. Chances are the piano will play rather well without them, but it will play better when you replace them...and you'll probably have to touch up the regulation a little bit.

    The reason I made the PTG Playground many years ago was because I saw so many technicians trying to do complex repairs without mastering the very basic skills. You cannot do quality work based on sloppy basics. Work on your basics, which will help you pass the RPT Technical Exam, and then complex jobs will come easily.



    ------------------------------
    Ed Sutton
    ed440@me.com
    (980) 254-7413
    ------------------------------



  • 21.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago

    John Paul,

    What Ed said.

    Alan

    P. S. Ed's very sound advice also applies to anyone out there that might think they can learn how to become a piano technician simply by asking questions on this list alone.



    ------------------------------
    Alan Eder, RPT
    Herb Alpert School of Music
    California Institute of the Arts
    Valencia, CA
    661.904.6483
    ------------------------------



  • 22.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Posted 13 days ago

    Thank you for posting this reply Ed. I have not done (if not learned) all the above things before.

    I do have the Piano Technician academy online course including the videos (Going through aural tuning at the moment). Plus I do have a full kit with a wide variety of tools for regulation. 
    I have a picture of what I have for now.



    is it okay I try to call you about my situation ed?

    I have not gotten into anything too deep or complicated yet, just tuning the upright and grand regulation on a grand action model. I definitely don't want to rush into anything without proper guidance.

     My phone number is (951) 240-1440



    ------------------------------
    John-Paul Karas
    Murrieta CA
    (951) 240-1440
    ------------------------------



  • 23.  RE: Tuning Repairing, and voicing a Yamaha P22 from 1984

    Registered Piano Technician
    Posted 13 days ago
    I'm a bit behind on this one, and catching up -- so I apologize if this has already been said or I'm missing something:

    I do not think you need to replace the flanges at all. In all cases (butt plates or not) it is faster to leave the flanges on the action rail and replace the cords themselves.

    For the butt plate variety you gain access by loosening the screw just enough to remove the hammer butt. For conventional flanges you can remove the dampers (which go back in with a lot less re-adjustment). Bill Monroe published a journal article a couple years ago on the latter procedure. 

    Doing it that way saves a lot of time because you don't have to space or travel the hammers, save for maybe a few minor adjustments.

    Personally I like the white flange cord formerly sold by Pianotek, now from Schaff as number 932W. If you can't get a Schaff account or the shipping is too rich for your blood, this stuff is fine too: https://www.howardpianoindustries.com/silk-cord/