Squeeking rep lever springs on Tokiwa wips

[Isaac sur Noos]

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For Hamburg models it is often necessary to add 1 mm spread when switching
from pre 74 parts to more recent. Not all action stack and whippens being
equal. Spread 112.5 - 113.5
Less spread = more heavy, but faster action, can work with a little less
dip.
Did you use CLP on the pinning ?

Isaac Oleg



-----Message d'origine-----
De : pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org]De la part
de Mark Dierauf
Envoye : jeudi 4 decembre 2003 22:42
A : pianotech@ptg.org
Objet : RE: Squeeking rep lever springs on Tokiwa wips

Thanks for the responses, Dale & Clyde. I had considered putting something
with some more "body" in the slots, and perhaps the protek grease is the
answer. I have spoken to Bob at Pianotek about this problem, and will again
before taking the next step. I'm not sure that I've given up on Tokiwa as a
result of this, but I'm gettin' there. Other than this, I like the parts,
and love the eveness of touchweight that I was able to get on both pianos
with the adjustable helper springs. One piano - a Mason AA with Renner
wips - went from the mid 60's (grams) to the upper 40's in the middle after
the switch over, and I removed 6 lbs. of lead from the keys. The customer
was beginning to have muscular problems that limited her practice time but
can now play for hours pain-free. The other set went on my own Steinway, and
even without the springs I got better touchweight & friction numbers than
with the Renner parts. I do have problems with checking on my piano that
disappear when I swap out samples with Renner wips, though. Although they
appear identical in the important aspects, I suspect that the Tokiwas are
shortening the action spread just slightly, but I haven't checked it yet.
Can someone remind me of what the spec is for S&S action spread?

- Mark

-----Original Message-----
From: Erwinspiano@aol.com [mailto:Erwinspiano@aol.com]
Sent: Thursday, December 04, 2003 11:25 AM
To: pianotech@ptg.org
Subject: Re: Squeeking rep lever springs on Tokiwa wips

In a message dated 12/3/2003 8:24:08 PM Pacific Standard Time,
mark@nhpianos.com writes:
  In the past year I installed two sets of "Miracle Wips", made by Tokiwa
via Pianotek. Both sets quickly developed fairly noisy squeaks where the rep
lever spring slides in the slot on the underside of the lever. I tried clear
Teflon and protek, both on the spring and in the slot, which originally had
painted on graphite. The springs are clean, and don't appear to have any
loose or missing plating or corrosion, and I've looked with a microscope.
Both pianos are in humidity-controlled environments. Both these sets are
also plagued by "Suddenly Tight Center-Pin Syndrome" with friction jumping
from 2 - 3 grams to 20 - 30 grams! After just spending several hours each on
both pianos, pulling every wip and checking/repining flanges & jacks and
lubing all the slots, the customer calls back to say: "Its baa-ack!"  Has
anyone ever run across this on any piano and found a permanent solution?

- Mark
     Actually I've had this squeaking on very few tokiwa parts but solved
the problem by lubing with protek grease. The tight pins syndrome in many
cases will just require re -pinning. The cause here can be A. glue
contamination B. plating on japanese pins sometimes fakes off & clogs up
felt (German ones too sometimes). C.Wood changing dimension. D. pinned too
tight to begin with & then the wood swells. E. Who could possibly know.
   Don't be to hard on the tokiwa parts with a blanket indictment. I've had
similar problems with most parts. Contact the importer at Pacific piano.
  Dale

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