Yamaha U1

[Michael Magness]

On Fri, Aug 22, 2008 at 8:11 AM, CALANDE Luc <luc.calande at versateladsl.be>wrote:

> Any advise for regulating this ? Don't find for exemple in Reblitz book !?
>
> LC
>
>
> ----- Original Message ----- From: <pianoguru at cox.net>
> To: "Pianotech List" <pianotech at ptg.org>; "Mark Wisner" <
> markwisner at earthlink.net>
> Sent: Friday, August 22, 2008 2:49 PM
> Subject: [Norton AntiSpam] Re: Yamaha U1
>
>
>
> The jack rail is effective in improving repetition..  Julia, you'll notice
>> that in other upright actions there may be felt on the back side of the
>> let-off rail to serve the same purpose, or a felt block on the jack near the
>> top, or a smaller felt block on the back of the catcher, all serving the
>> same purpose. The difference is that the rail is adjustable, to achieve the
>> absolute minimum of necessary movement away from the hammer butt.  The same
>> screw that mounts the rail is the adjusting screw.  If the threads of the
>> screw were the same along its length, turning it would affect no change in
>> the rail position, but the threads through the rail are "faster" threads
>> than at the tip where it enters the main rail, allowing for the tiny bit of
>> movement to finely control its adjustment.
>>
>> Frank Emerson
>>
>>
>> ---- Mark Wisner <markwisner at earthlink.net> wrote:
>>
>>> It's a jack-stop rail, and supposed to keep the jack from whipping too
>>> far on back on a very hard blow.
>>>
>>> -----Original Message-----
>>> >From: KeyKat88 at aol.com
>>> >Sent: Aug 21, 2008 6:15 PM
>>> >To: pianotech at ptg.org
>>> >Subject: Yamaha U1 "extra" rail
>>> >
>>> >Greetings,
>>> >
>>> >     What's with the extra rail in the front of the  Yamaha U1 action? I
>>> > have
>>> >never seen this before. Its down in front near the  letoff rail
>>> >
>>> >
>>> >Julia Gottshall
>>> >Reading, PA
>>> >
>>> >
>>> >
>>> >**************It's only a deal if it's where you want to go. Find your
>>> >travel
>>> >deal here.
>>> >(http://information.travel.aol.com/deals?ncid=aoltrv00050000000047)
>>>
>>>
>>
> Hi Julia

Find a copy of a Schwander regulation book and all will be revealed.

Most, if not all of the asian verticals and now Baldwin too, have copied the
Schwander vertical action which was originally used in the better Kimballs(I
know it's an oxymoron) back in the 70"s and early 80's. I may have a copy
around here somewhere, if I do I'll copy it and send it out this evening.

Mike


-- 
I feel sorry for the person who can't get genuinely excited about his work.
Not only will he never be satisfied, but he will never achieve anything
worthwhile.
Walter Chrysler



Michael Magness
Magness Piano Service
608-786-4404
www.IFixPianos.com
email mike at ifixpianos.com
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