[pianotech] Follow up report on BB Mason and Weickert felt

David Ilvedson ilvey at sbcglobal.net
Tue Dec 15 23:53:34 MST 2009


I'll attend...

David Ilvedson, RPT
Pacifica, CA  94044

----- Original message ----------------------------------------
From: "David Love" <davidlovepianos at comcast.net>
To: pianotech at ptg.org
Received: 12/15/2009 9:28:42 PM
Subject: Re: [pianotech] Follow up report on BB Mason and Weickert felt


>Let's not confuse tension with stiffness of the felt.  Ronsen's have plenty
>of tension but the stiffness may be lacking for some applications (and it
>depends on which felt and the pressing).  Some hard pressed hammers have
>very little tension most of it having been cooked out of them like throwing
>your nice wool sweater into the hot drier.  Of course whether the hammer
>sounds right depends on a number of factors including the match between
>hammer and piano and, of course, consumer taste.  It depends on what you're
>after.  I like Renners on the right piano and can't stand them on the wrong
>piano.  Same is true with, say, Ronsen Bacon felt hammers.  Personally I
>have a lower tolerance for a hammer that is too hard than for one that is
>too soft.  Overly soft hammers which are typically cold pressed, almost
>always respond well to careful use of hardeners/densifiers/stiffeners,
>however you like to call them.  Overly hard hammers often do not respond
>well to needling when the amount of needling required is excessive and on
>top of it they may be unstable.  A hammer which is modestly too hard can be
>fine to work with and stable.  A good example of the difference is those old
>Yamaha hammers used on the production pianos and the new hammers used on the
>CF or even the C7 pianos.  Those older hammers simply don't respond to
>needling the same way the newer ones do even though the newer ones are still
>quite firm.  So it also depends on the overall quality.  Renner hammers vary
>so much that it's hard to lump them into one category.  It's like saying, "I
>like (or don't like) jazz".  There are too many different iterations and
>styles to not be more specific.  Some of Renners hammers are ridiculously
>hard and some are firm but nice to work with.  Same with Abel.  We do have a
>lot of choices now, which is nice, but also a lot of uncertainty about just
>what you're going to get when you order something using only the
>manufacturer as your criteria.   

>Anyway, attend my seminar next year (date undetermined) on choosing
>replacement hammers.  All the criteria and methods needed to make a sound
>decision about what to use will be covered--time allowing.

>David Love
>www.davidlovepianos.com


>-----Original Message-----
>From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On Behalf
>Of David Ilvedson
>Sent: Tuesday, December 15, 2009 9:08 PM
>To: pianotech at ptg.org
>Subject: Re: [pianotech] Follow up report on BB Mason and Weickert felt

>Hi David,

>I'm seeing a lot of Ronsen hammers these days and I'm not sure I'm that
>impressed...I am impressed with some Renner hammers and others and have to
>wonder if something is missing when you don't build that tension into the
>hammer.   The necessity of opening the shoulders to make a cushion and the
>solidity of the low shoulders...I'm just posing some questions for
>discussion since the Ronsen seems to get so much press from those who use
>it...

>David Ilvedson, RPT
>Pacifica, CA  94044

>----- Original message ----------------------------------------
>From: "David Love" <davidlovepianos at comcast.net>
>To: pianotech at ptg.org
>Received: 12/15/2009 9:00:16 PM
>Subject: Re: [pianotech] Follow up report on BB Mason and Weickert felt


>>In know you're not asking me but my experience has been that, no they don't
>>need any more cushion.  The shoulders already have enough give--sometimes
>>too much.  If anything they need a more solid footing below the shoulder so
>>that the flexible shoulder has something to spring against.  Thus the
>>periodic need to strengthen the lower part of the hammer on some sets.  

>>David Love
>>www.davidlovepianos.com

>>-----Original Message-----
>>From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On
>Behalf
>>Of David Ilvedson
>>Sent: Tuesday, December 15, 2009 8:40 PM
>>To: pianotech at ptg.org
>>Subject: Re: [pianotech] Follow up report on BB Mason and Weickert felt

>>I find it interesting that you didn't need to do any shoulder needling.
>>The "cushion" is there already?   You immediately had projection...tone
>>above the strings?   

>>David Ilvedson, RPT
>>Pacifica, CA  94044

>>----- Original message ----------------------------------------
>>From: erwinspiano at aol.com
>>To: pianotech at ptg.org
>>Received: 12/15/2009 8:31:08 PM
>>Subject: [pianotech] Follow up report on BB Mason and Weickert felt



>>> As some may recall I reporting that we were doing a modest face lift to a
>>1976 
>>>Mason Hamlin BB. The dreaded Aeolian years.
>>> We applied two new top sections of bridge cap and rehabbed the pins in
>the
>>rest of 
>>>the bridge. We replaced Shanks and installed the New Ronsen Weicker felted

>>>hammers. The piano is done and the tonal results are very pleasing. The
>>teacher in 
>>>charge of getting it done is very talented young man with good repertoire
>>and he 
>>>was greatly impressed with the dynamics power and clarity.
>>> The final voicing protocol other than careful strike weight prep and
>>filing was 
>>>embarrassingly easy for the result. In the bass I added some 12 to 1 lac
>>acetone to 
>>>the mono-chords only for a bit more initial boost and four drops on the
>>strike point 
>>>from note 9 thru 21. The tenor was three drops on the top of each  up to
>>f-3 and 
>>>nada, zip, nothing from there to the top. Not exazctly filling the hammer
>>with lacquer 
>>>eh? No needling at all. Impossible?
>>>   I could not ask for better result and with minimul efforts. I've always
>>considered 
>>>that the Mason Piano needed a fairly stiff hammer and these were dense for
>>sure 
>>>but needles are no problem but presently it needs nothing. After some play
>>in time 
>>>I'll post back with a further review. I've just recieved another identical
>>set & they 
>>>have the same density, shape and weight as the first set. 
>>>  Kudos to our hammer head ally...Ray.
>>>  It occurs to me that some may weary of the hammer felt news, but then
>>that's 
>>>what the list is for and also what the delete button is for. 
>>>   I hope no one is snoring
>>>   You have my open invitation If you are in the area to stop by and enjoy
>>the sound 
>>>for your self!
>>>  Kindest regards
>>>  Dale Erwin

>>>WWW.Erwinspiano.com


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