Discussion Posts

  • Posted in: Pianotech

    Two cents is'n't a pair of dime. -chris ------------------------------ Chernobieff Piano Restorations "Where Tone is Key" chernobieffpiano.com grandpianoman@protonmail.com Lenoir City, TN 865-986-7720 ------------------------------

  • Posted in: Pianotech

    Chris It's called a paradigm. I don't use impedance formulas for calculating anything. But make no mistake, the rate of energy transfer in pianos is a reality that we contend with one way or the other. Whether it's voicing, hammer selection or soundboard ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    I used to tune a small Boston grand that was in a jazz club. It was fairly old, probably one of the original Boston models. The piano stayed in tune quite well except for the 5th and 6th octaves; not only did it consistently drop 5-10 cents but over the ...

  • Posted in: Pianotech

    I don't agree with this. We think about these things with minds that are designed to calculate phenomena that are mostly visible by our senses. What is happening at 440-1000hz is not visible to the naked eye, and therefore hard to formulate a visual notion ...

  • Posted in: Pianotech

    David, I'm not questioning the impedance theory, i'm questioning its value for the piano technician. I see its value in electrical circuits and wires selection, but not the piano. An electrician can measure directly with meters. What such device for piano ...

  • Posted in: Pianotech

    Hello Chuck, And that's exactly where they are. Good luck! Peter ------------------------------ Petrus Janssen Peachtree City GA 678-416-8055 ------------------------------

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    Total agreement on full room climate control. It's the entire structure that's involved.  Peter Grey Piano Doctor ------------------------------ Peter Grey Stratham NH 603-686-2395 pianodoctor57@gmail.com ------------------------------

  • Posted in: Pianotech

    Benjamin, Thanks! Apparently a mover switched the legs so the access hole to reach the cheek block screw is at the back of the piano instead of where it belongs!

  • Posted in: Pianotech

    Keith wrote: "Having a board that moves free with minimal loading is one that will last longer, IMO" I can't speak to whether not will last longer but a board that moves too freely will likely sound percussive with inadequate sustain. Impedance means, ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    Steve,  The energy you speak of is contained, or as is often the case, inadequately contained in the front segment of wire...the entire length of wire between capo and tuning pin. Some front segments are so badly designed, Jesus Christ himself would not ...

  • Posted in: Pianotech

    Without the actual dimensions looking at pictures on the video is really not sufficient information to make any assessment about how stiff the board is. Nor is the fact that this one happens to be over built any indication that the impedance matching ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    I used to tune a small Boston grand that was in a jazz club. It was fairly old, probably one of the original Boston models. The piano stayed in tune quite well except for the 5th and 6th octaves; not only did it consistently drop 5-10 cents but over the ...

  • Posted in: Pianotech

    Ian, Why thank you for the unexpected compliment.  These were Renner Blue Points and i voiced them this way. Bass section I applied B-72 (1 pass for bichords, 2 passes unichords about a 1-16 mixture), top 6 notes also received B-72.  The rest i applied ...

  • Posted in: Pianotech

    Further. The fact that a C6 hammer sounded better than the heavier G4 hammer supports my thesis. The lighter hammer (and it probably differed dimensionally as well, i.e., the thickness of the felt) in this case was a better match.  The hammer definitely ...

  • Posted in: Pianotech

    Most of the time the screws come up from underneath.  Sometimes I've had to remove the fallboard first in order to access the cheek block screws from the top. At least twice I've had to remove those rubber buttons you describe to access the screws from ...

  • Posted in: Pianotech

    Ok but that just begs the question. If it doesn't matter what hammer you use and it's just a matter of how much work you have to do then what are you accomplishing with the work you have to do? The answer is to get the hammer to comply with the belly ...

  • Posted in: Pianotech

    Without knowing the before and after dimensions (panel thickness and rib dimensions: length, width and depth and include crown and downbearing settings) it's hard to make any comment. How do we know the assembly wasn't overbuilt to start? ------------------------------ ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    "Bottom line: I tell my customers that if they want tuning stability, they need to control RH in the room. Period." - Fred Sturm I totally agree with that. Also, with churches and institutions that can't, don't or won't control temp. & RH in the room, ...

  • Posted in: Pianotech

    Thanks Paul! I didn't think to look at the "other end" of the legs-I'll check it out.

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    Just a thought What puzzles me about the bridge being the culprit due to humidity changes,,,,, Why not just seal the areas that moisture can get into the bridge? edges of the glue joint and the cap can all be sealed as to not react to humidity. Temperature ...

  • Posted in: Pianotech

    Get under the piano with good light and your screwdriver. Each of the front legs has a hole to access the cheek block screw. If you can't find the screw head movers may have swapped the front legs. If so, support the piano with a couple piano jacks & ...

  • Posted in: Pianotech

    I totally agree with you. Energy is conserved. One of the first laws of physics. If you can't account for where the energy goes when applied to a system, it needs more work. Energy is lost through friction in the action. It is lost when the action can't ...

  • Posted in: Pianotech

    It is a very touchy skill. Harder to see in an upright, unless you remove the hammers. You need to be looking at the moment of the beginning of lift. Are both ends lifting simultaneously? If one end is lifting slightly (and I mean very slightly) ahead ...

  • Posted in: Pianotech

    A picture would help.  There should be a screw underneath the keybed.  The little button on top is probably not covering a screw.  If the leg covers the area where a screw might be located, perhaps the legs are mixed up.  Usually there's an access hole ...

  • Posted in: Pianotech

    Folks, I have a customer with a Story & Clark grand made by Yamaha in the early 70’s and I can’t quite see how to remove the cheek blocks and key slip. Leg bolt on the underside of the keybed. There is a little brown button on the top of each cheek block, ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    I was involved in beta testing a humidity control system that sealed the bottom of the piano (plastic taped to the rim, foam around the nose bolts) and maintained the RH within + or - 1% (data logger in the cavity showed that this was true). This was ...

    1 person recommends this.
  • Posted in: Pianotech

    Chris, Excellent voicing on this Baldwin, nice work! Ian ------------------------------ Ian Graham Piano Technician Instrument and Clock Restoration www.igraham.ca ------------------------------

  • Posted in: Pianotech

    <Ron thought that the movement of the bridge pin caused the beat, 88 agraffe pianos often will have beats in new and healthy caps. Press the pin in the direction of the string, and the beat speeds up...it doesn't go away. So in the complexity of the ...

  • Profile Picture

    RE: Obvious scam

    Posted in: Pianotech

    Feel free to use this reply: "You're in luck. You've contacted the network of piano technicians heeding Trump' call to place a Steinway baby grand piano in every room of his Mar a Lago resort (https://www.maralagoclub.com/guest-suites). Call their number ...

  • Posted in: Pianotech

    Feel free to use this reply: "You're in luck. You've contacted the network of piano technicians heeding Trump' call to place a Steinway baby grand piano in every room of his Mar a Lago resort (https://www.maralagoclub.com/guest-suites). Call their number ...

  • Posted in: Pianotech

    Thanks Jon. That makes sense and is helpful! ------------------------------ Mark Davis Piano Tuner/Technician ------------------------------

  • Profile Picture

    Making a spring

    Posted in: Pianotech
  • Posted in: Pianotech

    I presented a talk at a local PTG meeting a few years ago where I presented my "beliefs".  I would be happy to give it again if anyone is interested. Ron Nossaman's observation that pressure on the bridge pin will stop a false beat is an important observation, ...

  • Posted in: Pianotech

    I think that by now, I have probably seen most variants of these emails. They have 3 things in common: They all are scams They all look and sound alike They are annoying. I spend less than 2 seconds on them by glancing over them. "Giving away" and "late" ...

  • Posted in: Pianotech

    Well tonight I get this email (Sent from Michelle Lindemann : lindemannm733@gmail.com ) Notice the wording is off a bit, not an English speaker? : Good Day Sir/Ma, I am giving away my late Son Steinway Baby Grand Piano to a lovely home ...

  • Posted in: Pianotech

    ok...start a new thread...it could be of general interest ------------------------------ Jim Ialeggio grandpianosolutions.com Shirley, MA 978 425-9026 ------------------------------

  • Posted in: Pianotech

    I post this NOT to be snarky or as a calling out of others, but to further the conversation for positive advancement. I was concerned about some of the past postings regarding impedance mismatching. Since my theories are somewhat opposite in nature, as ...

  • Posted in: Pianotech

    Jim, Any reply to this (and I have one) would clutter up this thread. We could continue this off list or on a new thread. ------------------------------ Blaine Hebert Duarte CA 626-795-5170 ------------------------------

  • Posted in: Pianotech

    Agreed, after much futzing with this.  I just use the best maple I can find...reclaimed stuff from honking thick work tops from the 40's, and recent vacuum kiln dried stock, which  I think is going to be real nice resonant stock. ------------------------------ ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    To me none of it really matters since the problem is solved with good climate control.  Peter Grey Piano Doctor ------------------------------ Peter Grey Stratham NH 603-686-2395 pianodoctor57@gmail.com ------------------------------

    1 person recommends this.
  • Posted in: Pianotech

    Greetings,    Seems I remember Ron opining that if there was a harder cap on the bridge, and the pin was not bottomed out in the hole, the pin/cap assembly would rest on top of the bridge as a unit and the expansion/contraction would occur in the softer ...

  • Posted in: Pianotech

    Hi Ed, This makes more sense than what I wrote. However, I distinctly remember in my conversations with Ron, his opinion that 1- the cap was zero point of movement...which makes no sense to me, and 2- that the foot of the pin does not have to be bottomed ...

  • Posted in: Pianotech

    I'm thinking more about this, and wondering if I've got it right: The higher let-off is set, the less the jack needs to move to clear the knuckle, since the knuckle slides away from the top of the jack as the hammer shank is lifted.  If the jack needs ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    As I understood Ron's hypothesis, it is the opposite of what Jim expresses. Ron, as I understood him, believed that the bridge pin is held more tightly deep in the root than at the surface, so that the bridge pin does not move up and down, relative to ...

  • Posted in: Pianotech

    Peter, It took me a a few times seeing your posting of All/Alcohol to figure out that you were referring to the brand name All fabric softener plus alcohol. I misinterpreted the All as some chemical abbreviation that I was unfamiliar with. What is the ...

  • Posted in: Pianotech

    Blaine: Ron's hypothesis was, that: Since the front and back bridge pins are slanted at opposing, 18  deg angles (or close to that), a string, in tension, around those opposing contact points, is trapped in a very constrained geometrical relationship. ...

  • Posted in: Pianotech

    Here's a photo of how I was instructed early-on as to the placement of the clips. ------------------------------ Regards, Jon Page mailto:jonpage@comcast.net http://www.pianocapecod.com ------------------------------

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    Jim, Could you briefly describe your effort at testing Ron's work? ------------------------------ Blaine Hebert Duarte CA 626-795-5170 ------------------------------

  • Posted in: Pianotech

    For the Journal's series on What to Buy, February will discuss specialized repair kits. The following are already covered: Vertical Shank Replacement Center Pin and Bushing Replacement Hammer Filing Key Rebushing Stringing Cleaning We're ...

  • Profile Picture

    RE: Unison smear?

    Posted in: Pianotech

    I would suggest investing in a data logger and putting it in the piano for 2 weeks so it records 24 x 7 at 5 minute intervals. Graphs printed out will show what is exactly going on in a day . You only have 2 readings listed 32 and 45 % - Dampp Chaser's ...