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Thread: Newly acquired Mason & Hamlin 1200 3mp Liszt help?

  1. #31
    ppp Pianississmo cearley's Avatar
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    Quote Originally Posted by myorgan View Post
    3.5" won't be that far off, so you should be good. Of course, you could always restore the hand pump!

    Michael
    It would be impossible to find a person to run the hand pump these days. That would be interesting though.

  2. #32
    ppp Pianississmo cearley's Avatar
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    I checked with Arndt Organ Supply. I read them the label for the blower. The man said that it approximated a 1/2 hp blower. This is the size recommended for a reed organ with 11 ranks of reeds. So I am ok with this one.

  3. #33
    ff Fortissimo SubBase's Avatar
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    Quote Originally Posted by cearley View Post
    I checked with Arndt Organ Supply. I read them the label for the blower. The man said that it approximated a 1/2 hp blower. This is the size recommended for a reed organ with 11 ranks of reeds. So I am ok with this one.
    Big Masons with large reeds are more exacting in the CFM requirements than say, an Estey T. The Corno 16ft. (and the upper manual Sax. 8ft) should count as two sets, they are so wind-hungry. The 32ft pedal is similar, but no 4-note chords on it.
    Casey

  4. #34
    ppp Pianississmo cearley's Avatar
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    Arndt Organ Supply makes 2 suction blowers for Reed Organs.
    "#RO-6 (1/8th hp) 2 ” suction for up to 6 sets of reeds

    #RO-16 (1/2 hp) 4 ” suction for up to 16 sets of reeds."

    The #RO-16 is about $600 with S+H.

  5. #35
    ppp Pianississmo cearley's Avatar
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  6. #36
    ppp Pianississmo cearley's Avatar
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    Eolian Harp cover removed and mute open
    Mason & Hamlin under lid Eolian Harp mute open.jpg
    Valve on Right (removed and upside down)
    Mason & Hamlin under lid RT valve removed upside down.jpg
    Taken apart
    Mason & Hamlin under lid RT valve innards.jpg

    Hooks in the back. My other M&H has them. What are they for?
    Mason & Hamlin under lid hooks.jpg

  7. #37
    ppp Pianississmo cearley's Avatar
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    Tremulant linkages:
    Left side
    Mason & Hamlin under lid Tremulant L.jpg
    Yes, I know I will have to get some leather to replace that

    Right side
    Mason & Hamlin under lid Tremulant R.jpg

    There is something really strange going on with the Tremulant. When knob is all the way pulled out, the Choir Division loses all volume and gets really quiet. Sometimes, when you push the knob back in it gets loud again. Sometimes it does not. I have to turn off the blower and let it stop. When I turn it back on, all is normal. Any idea as what is happening?
    How does this Tremulant work? My other M&H has the normal fan placed behind the Treble end of the organ. It is not encased like this either.

  8. #38
    ff Fortissimo SubBase's Avatar
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    Hooks were for the reed puller.
    Casey

  9. #39
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    That square of leather is a gasket; it looks to have a massive hole in it.
    The low volume is because all the wind to the reeds is passing through the tremulant valve, which is less wind than the normal situation. There is a dowel under the white leather square that closes off the normal wind passages when Trem. is drawn.
    Trem is for a solo passage (which will be normal volume) or chords, which will be soft because of decreased wind.

  10. #40
    ppp Pianississmo cearley's Avatar
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    Quote Originally Posted by SubBase View Post
    Hooks were for the reed puller.
    Casey
    Well, that makes sense. I have one that I found in an antique store. Before, I used a crochet hook. It worked quite well.

    - - - Updated - - -

    Quote Originally Posted by SubBase View Post
    That square of leather is a gasket; it looks to have a massive hole in it.
    The low volume is because all the wind to the reeds is passing through the tremulant valve, which is less wind than the normal situation. There is a dowel under the white leather square that closes off the normal wind passages when Trem. is drawn.
    Trem is for a solo passage (which will be normal volume) or chords, which will be soft because of decreased wind.
    I knew that I would have to replace that piece of leather. The other one looks good. I didn't think that it would diminish the volume that drastically. It is about the volume of the Eolian Harp. The EO is so soft that I wonder what use it has. I had never seen a Reed Organ that had one before, let alone play one. I guess that it could accompany a prayer or something quiet. It is really a pretty stop.
    Casey, I am glad you know so much about ROs.

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