rusted piano strings

[mccleskey112 at bellsouth.net]

It's been my experience that the reason that strings form rust is because of 
condensate that form on them when the atmospheric condition is correct for 
such an occasion. I think that occurrence is called dew-point. Dose that 
make sense?
Gerald McC
----- Original Message ----- 
From: "Don" <pianotuna at accesscomm.ca>
To: "Pianotech List" <pianotech at ptg.org>
Sent: Monday, February 18, 2008 3:20 PM
Subject: RE: rusted piano strings


> Hi Greg,
>
> There is some benefit to a grand DC system without the covers. It's much
> better to use them, and I will no longer install a system without the
> bottom cover.
>
> At 03:56 PM 2/18/2008 -0500, you wrote:
>>Don,
>> I believe the results are conditional upon the string cover and/or
>>bottom cover not better with them.
>>
>>Greg Newell
>>Greg's Piano Forté
>>www.gregspianoforte.com
>>216-226-3791 (office)
>>216-470-8634 (mobile)
>>
>>-----Original Message-----
>>From: pianotech-bounces at ptg.org [mailto:pianotech-bounces at ptg.org] On 
>>Behalf
>>Of Don
>>Sent: Monday, February 18, 2008 2:40 PM
>>To: Pianotech List
>>Subject: RE: rusted piano strings
>>
>>Hi Greg,
>>
>>from: http://unieke.com/Unieke%20Nov%201/fq.htm
>>
>>"The higher the temperature the faster the rusting (corrosion and
>>oxidization of metal) occurs. Rule of 75: 75 degrees + 75 % Relative
>>Humidity = Accelerated Corrosion"
>>
>>As the DC system is set to 42% RH it will affect rust by slowing down the
>>process by lowering the RH. It will work better with bottom cover and
>>string cover.
>>
>>At 02:15 PM 2/18/2008 -0500, you wrote:
>>>Mark,
>>> I disagree. I do not believe that the addition of a Dampp-Chaser
>>>system would have the effect you wished for. What makes you believe that 
>>>it
>>>would? It's hung under the soundboard, the strings are above, with only
>>nose
>>>bolt holes to allow conditioned air to waft upwards.
>>>
>>>Greg Newell
>>Regards,
>>Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
>>Non calor sed umor est qui nobis incommodat
>>
>>mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/
>>
>>3004 Grant Rd. REGINA, SK, S4S 5G7
>>306-539-0716 or 1-888-29t-uner
>>
>>
>>
>>
>>-- 
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> 5:50 AM
>>
>>
> Regards,
> Don Rose, B.Mus., A.M.U.S., A.MUS., R.P.T.
> Non calor sed umor est qui nobis incommodat
>
> mailto:pianotuna at yahoo.com http://us.geocities.com/drpt1948/
>
> 3004 Grant Rd. REGINA, SK, S4S 5G7
> 306-539-0716 or 1-888-29t-uner
>