[pianotech] yamaha C6

[Andrew Anderson]

I've had a problem with a Kawai RX6 where pins were too tight and  
would "unwind" after being "set".  Changed the way I "set" the pins.   
Steinway style tuning doesn't work on this one.  The note had to be  
set at the middle of the torque range on the pin.  Pull down too hard  
and it would spring up.  Pull up too hard and it would spring down.   
Rendering was a bit of an issue but it improved with the same  
methodology you mentioned.

It always takes me about 1/2 again my usual tuning time.  I did have a  
full DC system put on it and it helped but those coil spring tuning  
pins are a bear to set.  I'm coming back to a better tuning state now  
so I guess I'm getting the hang of it.

Is your area plagued with high humidity too?

Andrew Anderson



On Sep 8, 2011, at 10:24 PM, Leslie Bartlett wrote:

> Rendering is not unreasonable. The piano is probably 20 years old.   
> Well, I did a nasty and put a thin film of protek/Teflon on the  
> bearing points, and think that helped a bit.  It’s as bad as some of  
> the Chinese things I have had to despise- and for a Yamaha, which  
> has been my favorite “brand” to tune, mostly because I did hundreds  
> of P22’s in a school system, along with a bunch of C 7’s- but this  
> piano is unique in my experience.
> Thanks
> les
>
> From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org]  
> On Behalf Of Andrew Anderson
> Sent: Thursday, September 08, 2011 6:53 PM
> To: pianotech at ptg.org
> Subject: Re: [pianotech] yamaha C6
>
> does it have to do with rendering?
>
> On Sep 8, 2011, at 5:34 PM, Leslie Bartlett wrote:
>
>
> I’ve been tuning a C6 for 7 years or more, and it has every time  
> been h*** to tune, and a 3-hour job. Nothing will stay stable. I’ve  
> been doing it every two months now for awhile and today was the  
> second time I didn’t have to go through each string on second pass.   
> Is it possible that the agraffes have been ground so sharply that  
> one can’t get a stable termination point?   I’m a decent tuner and  
> have done some mean pianos, but this one has left me befuddled.  Any  
> sage advice??????  I think it will be replaced by the first of the  
> year, but I’ll still be dealing with it for some time.
> Thanks
> Les bartlett
>
>
>
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