Chinese made Yamaha P22s - update

[Barbara Richmond]

My only experience with robertson screws, was following a tech who installed 
them in such a manner that heads were damaged.  Boy, that was fun.  Grrr....

Barbara Richmond, RPT
near Peoria, Illinois

----- Original Message ----- 
From: "Marcel Carey" <mcpianos at hotmail.com>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Monday, January 21, 2008 8:57 AM
Subject: RE: Chinese made Yamaha P22s - update


>
> Conrad,
>
> I never use the push pins to hold the dehumidifier. I find it MUCH easier 
> to use screws and a cordless drill. I use robertson screws with small 
> heads so the rod is held very efficiently. I always hated the push pins 
> AND screws supplied with dampp chaser systems. I just love robertson 
> screws for dampp chaser installs.
>
> Marcel Carey, RPT
> Sherbrooke, QC
> --
>>
>> I find that they are NOT Dampp-Chaser friendly.
>>
>> You CANNOT push the dehumidifier rod holding (push)-pins into the side
>> of the case.  You cannot HAMMER the pins into the case. (Bending or
>> breaking the pins are the only possible results with those methods.) You
>> must pre-drill the holes. (I happened to have a #57 bit which seemed to
>> work OK)
>>
>> Why?  Because the core of the panels is no longer wood. It is a small
>> amount of fiber holding a large amount of glue together. (Did Yamaha buy
>> Kimball methods?)
>>
>> OK, OK, so they've gone to a heavier piano and I've dealt with it, but
>> after I'd finished the install (I thought) and went to put the lower
>> panel back on, I found that there is not enough clearance for the fill
>> tube between the panel and the bottom of the keybed. Some carving of the
>> underside of the keybed will be necessary to give it room.
>>
>> Happy Monday... ;-{
>>
>> -- 
>> Conrad Hoffsommer, RPT - Keyboard Technician
>> Luther College, 700 College Dr., Decorah, Iowa 52101-1045
>> 1-(563)-387-1204 // Fax 1-(563)-387-1076
>
> _________________________________________________________________
>