balance rail bearings

Brian Henselman musicmasters@worldnet.att.net
Sun, 3 Oct 1999 00:47:05 -0500


Yeah, I got this tip from Mr. Spurlock too.  However, I fashioned my
"key-lifter" for split punching insertion from an old Steinway pedal rod
(you know, the old type that we all throw out and replace with a
threaded/adjustable cap type).  I just hack-sawed the rod at about 12
inches, ground down the rough edges with a bench grinder, put the rod in a
vise, a pulled it into shape.  The metal is really soft and it's very easy
to shape into the perfect key-lifting bridge.  I also thought that it was
somewhat poetic that I was using an old disgarded, obsolete, genuine
Steinway part to level keys on Steinway grands.

BTW.  I completely agree about the key beam height.  Lots of modern D's and
some B's have had to have Kluge keyboards made to replace the "de-celerated"
action design.  Way too much key-flex and whipping on modern Steinways using
the "accelerated bearing system.

ps.  I consider Steinway's "modern" if they were built since WWI (c.1917).
Not a lot has changed since then.  Yeah, accelerated action, jack regulating
screws, and spring loaded tabs in the back-action, etc.  But we
replace/modernize/update all of that during restoration anyway...

Cheers,
Brian Henselman, RPT


-----Original Message-----
From: dale r fox <foxpiano@juno.com>
To: pianotech@ptg.org <pianotech@ptg.org>
Date: Saturday, October 02, 1999 10:51 PM
Subject: Re: balance rail bearings


> Actually, a coat hanger is  not sufficient to the task.  I Use 1/8 "
>steel rod about 12" in length with both ends bent at 90 degrees about
>1&1/2" from the end to make a rather long based U shape.     l________l
>  This support is then placed under the keys just behind the front rail
>pins to hold the keys up whilst playing with the balance rail punchings.
>The 'U' is upside down at this point   with the long section of rod
>holding the keys elevated.  Using a Kawai / Spurlock style action support
>allows placing of slit paper punchings under the felt punchings with the
>aid of alligator forceps. Use of the action support eliminates the
>possibility of scratching or worse of the stretcher which can easily
>happen when  the action is upended on the tails of the keys.  I use this
>method on virtually every action.  Steinways with balance rail bearings
>included.  BTW,  wish Steinway would dispense with those,  at least on
>the larger grands.  The keys need beam height way worse than they need
>the marketing hype.  B's and D's have way to much flex to be good
>mechanical levers under hard blows.
>
>Credit for this method should be passed on to Bill Spurlock and Fern
>Henry.  At least that's who taught me this time saver.
>
>Dale Fox
>
>
>
>On Sat, 2 Oct 1999 20:06:57 -0600 "Joe & Penny Goss"
><imatunr@primenet.com> writes:
>>Bob,
>>I seem to remember a freebie given out at a convention a while back
>>that
>>might be of interest to you.
>>It was one of those tools that you could make from a coat hanger.
>>I do not remember the dimentions but perhaps someone else on the list
>>will.
>>The purpose of the tool was to hold a section of keys up so that you
>>could
>>remove or add the punchings.
>>Joe Goss
>>http://www.primenet.com/~imatunr/#15
>>----- Original Message -----
>>From: Robert A. Anderson <fndango@azstarnet.com>
>>To: <pianotech@ptg.org>
>>Sent: Saturday, October 02, 1999 6:11 PM
>>Subject: Re: balance rail bearings
>>
>>
>>> Newton wrote:
>>>
>>> "By standing the action on the back rail and protecting the
>>stretcher
>>> from the drop screws one can move the keys and bearings far enough
>>to
>>> see what is under the bearing and remove what is needed with a good
>>> pair of forceps."
>>>
>>> Newton, the bearing strip is 4 mm thick and butts up against the
>>> bearings. Lifting the key and bearing as high as possible will only
>>let
>>> me see down the pin a fraction of a mm below the top of the strip. I
>>> admit that I can fish for the punchings with my forceps and raise
>>them
>>> above the level of the strip, but I can only do this for the
>>naturals. I
>>> have a very good forceps, and I can't reach the punchings for the
>>> sharps. There just isn't enough room.
>>>
>>> Newton also wrote:
>>>
>>> "Steinway, or any manufacturer, is cheap and will not do anything
>>they
>>> do not have to do even if we do not always understand their
>>> rationale.  DOn't mess with it unless you really understand it."
>>>
>>> Manufactureres may be cheap, Newton, but the rest does not
>>automatically
>>> follow. I'll bet that you could find manufacturing practices that
>>are
>>> only done by tradition or that manufacturers might have
>>psychological
>>> commitments to keep going. For example, balance rail bearings
>>themselves
>>> are not cheap, but I have never been personally told by anyone that
>>they
>>> could tell the difference in touch between a key with the bearing
>>and
>>> one without the bearing. (I can't tell the difference.) I've noticed
>>> hearsay evidence that the bearings are better, and it makes a good
>>> marketing story for S&S. But I'm not convinced.
>>>
>>> Newton also wrote:
>>>
>>> "The strips are their to prevent the bering from twisting."
>>>
>>> This is the logical explanation for the strips. As I wrote, I'll
>>find
>>> out how much twisting is going to happen, now that I've removed the
>>> front strip. I'll report back with my observations. Can I assume
>>that
>>> your statement is one of logical inference, Newton, or have you
>>really
>>> taken out the strip and observed twisting? I can certainly twist
>>loose
>>> bearings easily enough, but they shouldn't be loose. I've had to
>>size
>>> bearing holes that were loose to the point of making noise. I find
>>them
>>> tedious to work with, and I'm sorry S&S uses them at all.
>>>
>>> Am I just inept at this levelling procedure or has anyone else
>>> experienced my problem?
>>>
>>> Bob Anderson
>>> Tucson, AZ
>>>
>>
>
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