D-C 25 watt rods

[Greg Newell]

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John,
         I looked at this somewhat differently than you describe below. I=20
am not looking at 25 watts as 25 BTU's but rather just how much energy is=20
being used by the rod. Since the short one and the long one use the same=20
amount of electricity but are in fact different in size they it seems to=20
follow that they would produce a different amount of heat. This is where my=
=20
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=20
>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=20
>powers some cars. I would think that as a motorcycle, it would appear to=20
>have more power, than the same engine pushing a car.
>Best regards,
>John M. Ross
>Windsor, Nova Scotia, Canada
><mailto:jrpiano@win.eastlink.ca>jrpiano@win.eastlink.ca
>----- Original Message -----
>From: <mailto:gnewell@ameritech.net>Greg Newell
>To: <mailto:webb50@comcast.net>Ruth Phillips ;=20
><mailto:pianotech@ptg.org>Pianotech
>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=
=20
> I had hoped it, I believe, had the desired result. While Ruth Phillips=20
> mentions below that the 25Watt Rod was discontinued as a system staple I=
=20
> have to disagree. The part number G6PS (top item on page 22 of the Jansen=
=20
> catalogue includes both a 2' and a 4' 25 watt rod. I also disagree with=20
> others that posted (Don I think it was) who said that the two rods=20
> producing very different amounts of heat would not necessarily produce an=
=20
> imbalance. I paraphrased to clarify my point but I can't see how it could=
=20
> be anything but. Don's argument was that I did not take into account=20
> convection currents. It would seem to me that if one was too hot to hold=
=20
> and the other could be held all day being only luke warm then any=20
> convection currents would be more in the category of WIND to not produce=
=20
> an imbalance. I can agree with others who have posted that they never=20
> noticed any problems. Neither have I. Even though the two bars produce an=
=20
> entirely different amount of heat they are not necessarily doing damage.=
=20
> It seems that it could certainly be said, however, that they are not=20
> 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.
>>On the soundboard, once compression has taken place, drying the wood is=20
>>not going to make it disappear.  When you install a system you will find=
=20
>>that the wood changes - that is about all you can say with=20
>>certainty.  With the right equipment, properly installed, the system will=
=20
>>stabilize the wood.  Once it stabilizes, you can make corrections based=20
>>on what you find at that point.  It may take some time as there will be=20
>>residual change, such as there is when you change pitch.  Every change=20
>>causes reactions, and you keep at it until the change is so miniscule=20
>>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
>
>
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Greg Newell
Greg's piano Fort=E9
mailto:gnewell@ameritech.net=20

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