Yamaha C7 Pinblock Fit

[Todd L. Mapes]

Jim,

Thanks for the list of things to examine.  I'll pass it on.  I didn't
get to do any "touchy feely" on the piano, just heard the problem from
my friend in his request to ask you guys for help, so I can't comment on
rendering or anything like that.  He did say the pins felt good.  I was
under the impression that what took the unison so long to tune was that
all three strings kept moving on him and every time he'd get one side in
tune with the center, the other side would already be way out, and as he
went up the piano, the whole thing was moving around on him.  Mind you,
he's got enough experience (25 yrs) to understand pitch raising and so
I'm sure he wasn't referring to pitch drop due to large swings in
pitch.  Sorry for the wild goose chase.  I'll pass on your top ten list
to my buddy and see if he can pinpoint any other problems.

Todd

JIMRPT@AOL.COM wrote:
> 

> 10.) one of the 'last' things I would suspect to cause tuning instability
> would be a poor plate flange/pinblock fit. This would be especially true if
> the piano was "20 years old" and had been tuned "every two
> weeks".........this just doesn't compute in my po ole head.................
> 
 
> Actually this sounds more like a rendering problem than a pinblock
> problem........in order for a pinblock to cause this type of difficulty
> either the tuning pins would be verrrrry loose or the block would have to be
> flopping around like an Oscar Meyer Wiener. Poor rendering on 'some' older
> C7's is not unheard of although it is the exception to the
> rule.................
> 
>  Really though we would need much more info on this thingee before any cogent
> opinions could be formed.
> Jim Bryant (FL)