Hi all, I am finally back to working on the Wurlitzer 105 again after
a break for the holidays. I have most of the pipes made or in various
states of assembly. I am now ready to try voicing them.
I have built a manometer and a manifold that will allow me to adjust
the pressure to the required amount. I have been told that they should
operate at 8 inches of water.
What I need to know is: Is the 8 inches measured with the pipe playing
or with the pipe stopped? There is quite a pressure difference with it
(a pipe) open and closed. Enough in fact that with the pipe open and
the pressure adjusted, upon closing the pipe off, the water in the
meter spewed out the open end of the manometer tube.
I also have attempted to work up a set of drawings for the roll frame.
I have tried to use available materials and parts. I will have the
drawing posted on my 105 web page soon. If any of you would like, take
a look and let me know if you think it should work. All the gears,
shaft material and bearings are available through mail order and I will
have the part numbers, catalogue company and prices listed also.
Thanks to all!
Randy Charles
[ It's fortunate you were measuring air pressure, not suction, Randy.
[ When a manometer connected to a player piano goes overboard, the
[ water goes _into_ the wind chest! You will need a pressure
[ regulator for the completed organ; why not build it now? Then
[ the wind chest will stay at 8" WC pressure under any condition,
[ which is what you need while voicing and tuning the pipe rank. :-)
[ -- Robbie
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