mysterious sticking flanges

[John Ross]

Hi,
I have noticed that on some Yamaha Grands, of that
vintage.
I had to repin the offending flanges. I did notice a
blackness
at the pin, and assumed that it was a plating from the
pin that
had deteriorated.
After the repining, I have not had any reoffend.
Regards,
John M. Ross
Windsor, Nova Scotia, Canada
piano.tech@ns.sympatico.ca
----- Original Message -----
From: "cal munson" <fcm@pop.safepages.com>
To: "p" <pianotech@ptg.org>
Sent: Monday, November 12, 2001 10:00 PM
Subject: mysterious sticking flanges


> List,
>
>    I have noticed that sometimes Yamaha grand hammer
flanges become very
> sluggish after filing or sometimes just lifting them
to their furthest
> point of travel seems to do it. I've seen this only
on the older ones,
> say from around the 70's. Does anyone out there know
what is causing
> this?
>
> Cal Munson,
> Ann Arbor MI
>
> .
>