[CAUT] [pianotech] Riblets

[Jeannie Grassi]

Thanks, Chris.
This is helpful in visualizing.  I assumed Pianotek supplied good
instructions, but I wanted to get a sense of what was involved.  Doesn't
sound too complicated.  

I assume this is to improve the treble area.  Would riblets help in the
bass?  I have a Yamaha C6 that is weak in the bass and I can't seem to find
any way to improve it significantly.  

Any recommendations that don't involve replacing the soundboard?
jeannie

-----Original Message-----
From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of Chris
Solliday
Sent: Friday, February 26, 2010 12:15 PM
To: caut at ptg.org
Subject: Re: [CAUT] [pianotech] Riblets

Hi Jeannie,
It is a turnbuckle that connects the rim to the belly rail. Fasten with 6 or
7 wood bolts, that are provided. I dry fit it by holding the thing in place
and screwing the buckle out a bit so it will stay in place, mark the holes
with a punch and remove the resonator then drill all my holes, use screw
lube, I use beeswax. Tighten wood bolts with a socket wrench.  A little
turning of the buckle and you're in.Tighten to just get it snug and then a
little  more and listen, go in 1/16th turns and listen, it usually doesn't
take much, and there is a point where going beyond diesn't do any mor
improving. And there is the point that is way beyond. Do not over tighten as
our friend from Ithaca can testify, you can tear out the belly rail if you
try hard enough. Takes about 1/2 hour. Support is more evenly distributed
along the belly rail. Projection, power and clarity are improved.
They come with very detailed installation instructions.
Chris
----- Original Message ----- 
From: "Jeannie Grassi" <jcgrassi at earthlink.net>
To: <caut at ptg.org>
Sent: Friday, February 26, 2010 2:59 PM
Subject: Re: [CAUT] [pianotech] Riblets


> Hi Chris,
> Can you please go into a bit more detail about installation of these.
> Thanks,
> jeannie
>
> -----Original Message-----
> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
Chris
> Solliday
> Sent: Friday, February 26, 2010 11:49 AM
> To: caut at ptg.org
> Subject: Re: [CAUT] [pianotech] Riblets
>
> The device is the Grijalva Treble Tone Resonator (Pianotek part # RH-4TRL)
> and it would improve your problem, it might even do so amazingly, I just
> wouldn't want to promise that much always, as results vary.
> I have put over ten of these on and have always been satisfied, sometimes
as
> I said the results are truly superior. Soundboard Geritol.
> Chris Solliday, RPT
> ----- Original Message ----- 
> From: "Ron Nossaman" <rnossaman at cox.net>
> To: <pianotech at ptg.org>; <caut at ptg.org>
> Sent: Friday, February 26, 2010 12:50 PM
> Subject: Re: [CAUT] [pianotech] Riblets
>
>
> > Andrew Anderson wrote:
> > > The school whose Steinways I service would like to ameliorate the poor
> > > balance between bass and treble in their D.  This D was a really weak
> > > treble.  Voicing the hammers up makes for a harsh attack but doesn't
> > > seem to address power.
> > >
> > > Could someone who has utilized riblets on a S&S D comment on their
> > > experience.
> >
> > I haven't dried riblets on a D, but I know of a couple of
> > instances where it was tried, and heard one of them first
> > hand. The consensus was that it was somewhat less bad, but not
> > really better. Still, it's worth a try for the price of making
> > a couple. I think the belly rail, unsupported through the top
> > half of the scale by other than the "little stick", offers
> > more potential, however. Pianotek sells a turnbuckle adjusted
> > brace that will likely help more than riblets.
> >
> > Or if you'd like a more extensive modification...
> > Ron N
>