switching to digest mode

[Jason Kanter]

Look for a message that came on 8/1 titled
ptg.org mailing list memberships reminder

all the info is in there.

----- Original Message ----- 
From: "pianotune05" <pianotune05 at comcast.net>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Saturday, August 12, 2006 5:36 PM
Subject: switching to digest mode


> HI everyone,
> I wanted to  know how to change to receiving the list on digest mode.  Any 
> suggestions?  Thanks
> Marshall
> ----- Original Message ----- 
> From: "Ric Brekne" <ricbrek at broadpark.no>
> To: <pianotech at ptg.org>
> Sent: Saturday, August 12, 2006 3:50 PM
> Subject: Key Bushing Clearance/Friction, was: Key mortise correction
>
>
>> Hi Terry
>>
>> You dont really.  0.002" and 0.005 are rather more like of theoretical 
>> values which ends up being very close to what the <<optimalized>> bushing 
>> feels like.  You develop a feel for this sideways motion in both the 
>> keybutton and the front bushings.  And... as such things go... the actual 
>> results vary a bit from tech to tech.  Experienced techs whov'e gotten 
>> good at this however display a pretty high degree of likeness in end 
>> results.
>>
>> As for how much friction this ends up yeilding.  Total key friction 
>> shouldnt end up being more then absolute max 2 grams IMB... and I strive 
>> for 1-1.5 grams.  I find it difficult to understand how you can 
>> consistantly get lower then this and still maintain firmness of play 
>> myself.
>>
>> Cheers
>> RicB
>>
>> ---------
>> Two questions: How do you go about measuring key bushing clearance? And 
>> how much key friction does these specs commonly yield?
>>
>> Terry Farrell
>>  ----- Original Message -----
>>  SNIP
>>  4. Tight key bushing's.  Gently squeeze the bushing to have .002" 
>> clearance at BR bushings and .005" for FR bushing's.
>>
>>  Regards Roger
>