D-C 25 watt rods

[John Ross]

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Hi Greg,
I misunderstood what you were getting at, in the first e-mail.
I have always put in the higher wattage, bar since they became available =
in the toward the front of the piano position.
Best regards,
John M. Ross
Windsor, Nova Scotia, Canada
jrpiano@win.eastlink.ca
  ----- Original Message -----=20
  From: Greg Newell=20
  To: Pianotech=20
  Sent: Friday, February 13, 2004 7:19 PM
  Subject: Re: D-C 25 watt rods


  John,
          I looked at this somewhat differently than you describe below. =
I am not looking at 25 watts as 25 BTU's but rather just how much energy =
is being used by the rod. Since the short one and the long one use the =
same amount of electricity but are in fact different in size they it =
seems to follow that they would produce a different amount of heat. This =
is where my idea of an imbalance comes in. Is my thinking correct here?

  Greg


  At 03:51 PM 2/13/2004, you wrote:


    Hi Greg,
    25W concentrated in a short bar would feel hotter than, 25W in a =
long bar.
    Just think, one has more area to heat, and greater dissipation, so =
feels cooler. The shorter bar has the heat concentrated, and would feel =
hotter.
    I saw a picture of an 8 cylinder motorcycle, it was the same engine =
as powers some cars. I would think that as a motorcycle, it would appear =
to have more power, than the same engine pushing a car.
    Best regards,
    John M. Ross
    Windsor, Nova Scotia, Canada
    jrpiano@win.eastlink.ca

      ----- Original Message -----=20

      From: Greg Newell=20

      To: Ruth Phillips ; Pianotech=20

      Sent: Friday, February 13, 2004 3:20 PM

      Subject: Re: D-C 25 watt rods



      Listers and Listees,

              Thank you for the feedback. While it is not as much =
discussion as I had hoped it, I believe, had the desired result. While =
Ruth Phillips mentions below that the 25Watt Rod was discontinued as a =
system staple I have to disagree. The part number G6PS (top item on page =
22 of the Jansen catalogue includes both a 2' and a 4' 25 watt rod. I =
also disagree with others that posted (Don I think it was) who said that =
the two rods producing very different amounts of heat would not =
necessarily produce an imbalance. I paraphrased to clarify my point but =
I can't see how it could be anything but. Don's argument was that I did =
not take into account convection currents. It would seem to me that if =
one was too hot to hold and the other could be held all day being only =
luke warm then any convection currents would be more in the category of =
WIND to not produce an imbalance. I can agree with others who have =
posted that they never noticed any problems. Neither have I. Even though =
the two bars produce an entirely different amount of heat they are not =
necessarily doing damage. It seems that it could certainly be said, =
however, that they are not doing the best job possible. Any further =
thoughts?


      Greg



      At 06:25 PM 2/11/2004, you wrote:


        Greg - the 25 watt rod was discontinued as a system staple long =
ago. =20

        On the soundboard, once compression has taken place, drying the =
wood is not going to make it disappear.  When you install a system you =
will find that the wood changes - that is about all you can say with =
certainty.  With the right equipment, properly installed, the system =
will stabilize the wood.  Once it stabilizes, you can make corrections =
based on what you find at that point.  It may take some time as there =
will be residual change, such as there is when you change pitch.  Every =
change causes reactions, and you keep at it until the change is so =
miniscule that the reaction is meaningless.

        I hope this helps to clarify what you found.

        Ruth Phillips




      Greg Newell

      Greg's piano Fort=E9

      mailto:gnewell@ameritech.net=20


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  Greg Newell
  Greg's piano Fort=E9
  mailto:gnewell@ameritech.net=20



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