[CAUT] Pinning - was; rehearsal room climate swings

[Michelle Stranges]

I personally will be looking forward to Don Mannino replying to this  
post.
(I hope he does..)

:)


On May 18, 2006, at 1:05 PM, Jim Busby wrote:

> Hi John, Ron,
>
> How does that (RH swings) affect your center pinning?? When could you
> effectively repin? Pinning during low RH may cause the pins to  
> seize up
> during high RH, and loose pinning might occur with the opposite
> scenario.
>
> I recently repinned an M during 45%RH and when it went down to 20% my
> 5-7 grams went to 2-4 grams! (For you "swingers" it went from about  
> 3-5
> swings to 7-10 swings) Not only did this cause rep spring problems but
> the sound of loose hammer pinning is different than good pinning.  
> (Chris
> Robinson/Rick Baldassin did some spectrum studies which verified  
> this.)
>
> This is a concern I've had which I don't remember ever being  
> addressed.
> I've just tried to "get by", but there must be some pinning wisdom out
> there that I'm missing.
>
> Regards,
> Jim Busby BYU
>
> -----Original Message-----
> From: caut-bounces at ptg.org [mailto:caut-bounces at ptg.org] On Behalf Of
> John Minor
> Sent: Tuesday, May 16, 2006 1:23 PM
> To: caut
> Subject: [CAUT] rehearsal room climate swings
>
> I've been fighting wide swings in temp/humidity in university
> buildings for 13 years now and the tuning stability seems to
> get worse each year. One of our buildings recently underwent
> HVAC updates and the air exchange is now much more rapid that it
> ever was. I suspect this constant high volume flow of outside
> air around the pianos has a great deal of destabilizing effect.
>
> Has anyone tried using Edwards String Covers to shield the
> pianos from all that airflow?
>
> Any ideas?
>
> John Minor
> University of Illinois
>
> The 2 images are from a DICKSON DATA LOGGER tucked under the
> soundboard of a Steinway B in large rehearsal room. It was set
> to log hourly readings.