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Tuning enclosed divisions

Last post 07-19-2008, 12:47 PM by mpsnknox. 9 replies.
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  •  01-20-2008, 9:48 AM 47419

    Tuning enclosed divisions

    for those of you who tune pipes, how do you deal with enclosed divisions in terms of accessing them to tune them?

    Once you can tie your arms into a pretzel and your legs into a knot, you've got it under control
  •  01-20-2008, 10:05 AM 47420 in reply to 47419

    Re: Tuning enclosed divisions

    Maybe I can help with this Don.........

    You will find doors/openings to access all organ chambers.  For instance you might climb up a ladder to the Great division and off to either side you might find a hatch/door that will get you into the Swell, Choir or Solo division.  Many organs have all divisions on the same level.  Some organs the divisions could be stacked.  Example pedal and great on one level......the swell and choir/solo up above that, etc.  Organs are installed in MANY different configurations.  There are NO set rules.  It depends on the room and the available space you have to work with.  Within the divisions you will find walk-boards, ladders and an assortment of boards, cat walks, etc to get you around to the many pipes you are tuning.  I've seen a lot of beautiful designed organs chambers and I've seen some I hated.  I can't tell you the times I've said out loud....."I'd like to get my hands around the neck of the jerk (I'm using kind words) who designed this @@#%#@#$# chamber"...!!!

    Hope this helps. 


    "The Organ is in truth the grandest, the most daring,
    the most magnificent of all instruments invented by human genius."

  •  01-20-2008, 2:48 PM 47427 in reply to 47420

    Re: Tuning enclosed divisions

    Most organs have a hatch or some sort of access door, however I've seen some organs that require you tune the pipes from outside the shutters.  I'm familiar with at least two organs whose chambers can only be accessed by removing the façade pipes, then the shutters.
    Soubasse32
  •  01-20-2008, 3:41 PM 47428 in reply to 47427

    Re: Tuning enclosed divisions

    I kind of had visions of the tuner squeezing between open shutters, or something like that. But I did figure that there was some way around the shades.

    Once you can tie your arms into a pretzel and your legs into a knot, you've got it under control
  •  01-20-2008, 9:27 PM 47440 in reply to 47428

    Re: Tuning enclosed divisions

    Here you can see a door for a choir division 

  •  01-21-2008, 12:21 AM 47446 in reply to 47419

    Re: Tuning enclosed divisions

    Hi Austin766,

    For me, you really hit a nerve!  For all the younger guys out there who enjoy tuning; enjoy the challenges of tuning complex mixtures; especially those that love to pull an entire plenum together so not a note wavers!.... etc. etc., there is a certain inner reward that comes from a successful tuning job.  But after 50 years of tuning organs, one looses his enthusiasm for even standing on his head to reach those tiney little pipes under the perch board.  Especially when they are super octave pipes, and you've already tuned 61 of them, and have twelve more to go!  I fully agree with Don Furr and Soubasse32.  While most organs are laid out with fairly generous walkboards, perch boards, etc., there are a few that I want to murder the engineer that laid out the design of the instrument.  I have a Holtkamp that you must tune through the shutters.  The chest is six stops deep, and it's all you can do to reach the back row of pipes with a VERY long tuning iron.  After you've tuned the whole division, you have to go back through it and correct all the mutations that tend to draw with some of the "bossy" flutes and principals.  And for sure, I do that first (!) before starting on the mixture work. It's not much fun tuning a mixture through the shades!

    Then there's Moller.  Moller built as many stops as they could cram onto a chest or into a division swell box!  I have one that I must unrack half the stops to get to the back half.  I have another Moller that has a Rohrflote buried between 8' stops.  I must reach over two 8' stops to reach it, and then there are two more 8' stops behind it.  To make matters worse, the two bottom octaves of this division are planted in minor thirds, (I don't know why...it's supposed to save some room I guess), and it just makes a nightmare for the note holder to figure out what key to press next!  But my most classic Moller of all.....has an exposed Great 18 feet off the floor.  The Great Trumpet is on the very back of the chest.  What ivory tower engineer sat up all night and figured this one out?  The first option to tune the Trumpet is....unrack the great chest, (where the heck do you put a four rank mixture when it's the first stop to unrack, and you're standing on a ladder, 18 feet off the floor?), then unrack my tuning stop (4' Octave), and my alternate tuning stop (8' Principal) in order to get to the Trumpet.  By then, you've wiped out your tuning stops, so you have to tune the Trumpet to an electronic tuner, then replant the Principals and pretty much follow the same tuning plan...with the electronic tuner.  Now if you think tuning a mixture through swell shades is no fun, try tuning all those mixture pipes you've unracked and then replanted.  You have to tune them from scratch, standing on a ladder 18 feet up in the air! 

    The other option, which the tuner before me used, (and the one that I prefer to use) is to go into the Swell (which is placed directly behind the great), reach through the HORIZONTAL! shutters, then through holes that have been torn through the copper screened grill cloth, and tune the Trumpet from there.  Everytime, when I get done, I pull back a terribly scratched up arm and hand.  Of course, if a speck of debris, or a fly has fallen into the Trumpet and fouled a reed, you usually have no choice but to go through the Great, as afore mentioned, unracking the thing as you move toward the fouled pipe.  What a chore!  I also have a couple of Moller Artiste organs with a facade.  They're relatively easy to get into however.  After you remove the facade pipes, you loosen the bottom shutter flanges (these hold the shutter pins in place so they will pivot), pull out the shutter motor coupler dags at the top, unhook the shutter springs, and the whole shutter will come right out!  Then you can tune it from the front.

    I had an old Pilcher....when you opened the Swell or Choir access door, that's as far as you went!  Both divisions were wall to wall pipes.  The chests were built chromatic, smallest pipes facing you in the access doorway.  There was a stout rope that hung from the ceiling of the expression box.  You grabbed the rope with one hand, and tuning iron in the other.  You leaned forward, holding on to the rope and keeping your footing sure, behind you.  At least it didn't have a mixture in it.  Another Pilcher I used to have, had the Swell and Choir boxes so close to the side walls of the organ space that you could get stuck going up or down the ladder to access the entry doors leading into the division boxes.

    I have a very fine, and highly regarded Austin here in town that has a one foot square perch in the middle of the Great chest.  You climb over one side of the pedal division on a ladder, then descend down another ladder into the Great.  As you reach the bottom of the ladder, you can either take one more step (into the 4 rank and 3 rank mixtures,) or you can reach your foot out and step onto the perch.  Once you're on the perch, you get into three positions to tune the whole division.  Standing, and with a long tuning iron, you can reach the outer 8' basses; (I absolutely HATE to hit those beautiful tuning scrolls with a tuning iron!), then, squatting you can tune the 4' pipes, then balanced on your knees with your legs and feet jutting out behind you, you tune all the pipes underneath your perch, AND (!) the four rank AND (!) the three rank mixtures!  Needless to say, in this kneeling position, if you don't stay aware of your legs and feet behind you, your feet will be knocking pipes out of tune as you are tuning pipes in front of you.

    Then I have a German tracker that has a SKINNEY, skinney walkboard inside the Great box.  (The box I refer to is one of those boxes that have no shutters on the front of them....they just box the whole division in so the sound has only one egress....out the front.)  In the meantime, you're in the back of the box, trying to tune the dang thing.  This box has one door on the end of the skinney walkboard.  You can't squat or kneel down without your butt bending the pipes behind you!  And the whole chest is built diatonic, with the treble pipes in the center.  So, to make a long cussing session short, you stand and tune all the stops, bending over the little pipes in the center of the chest.  It's a real back buster!

    But you know, I think the organs I hate to tune the most are the German trackers that have no space built inside the box at all!  You would think they would be the easiest, looking at the structure.  Just a group of little doors on hinges in the back of the casework.  You just open the little doors and tune away.  WRONG!  Invariably, the mixture is right next to the back doors.  When you close those doors, they become a wall.  And the wall is so close to the pipes that it acts like a shade, causing those little pipes to go out of tune.  Just like when you shade a pipe with your tuning iron.  So you spend the better part of your entire tuning visit, opening doors, tweaking the little mixture pipes, closing the door and listening to see if the pipes will be in tune.  With some experience, you start listening to the beats of the pipe as you close and open the door.  The beating of the pipe will tell you whether to go sharper or flatter, etc. etc.

    Mark Twain was quoted as saying, "I'd rather decline a good scotch whiskey than decline a German verb".  When I've been asked to consider taking on a new German tracker as a client organ, the first thing I do is have a look at the position of that back wall.  If it is too tight, and especially if it has a mixture standing on the other side of that back wall, like Mr. Twain, I decline the offer. 

    Well, fellow techs, let's hear some of your horrow stories.  I just couldn't pass up telling you some of mine.  And above all, remember fellow tuners, .........."next" is a four letter word!

    Jay Mitchell.


    ....."next" is a four letter word. Jay999
  •  01-21-2008, 2:09 AM 47447 in reply to 47446

    Re: Tuning enclosed divisions

    Jay - I can identify with everything you've said!

    I've had my fill of German trackers too - mixture pipes so tight they look like a pack of cigarettes from overhead.  Angry

    Oh well, I can't add any more to what you've said - you've covered quite a bit.


    Soubasse32
  •  06-27-2008, 10:38 AM 57105 in reply to 47447

    Re: Tuning enclosed divisions

    Alittle late but.... here are pictures of laders inside stacked inclosed divisions. The swell is split on two levels... and the choir box is above it. Lots of Ladders!

    first pic.. the Chior box .. the second pic is looking down the ladder to the divided swell division. Note the 16' and 8' basses on the back wall of the swell.

  •  07-13-2008, 5:50 PM 58120 in reply to 57105

    Re: Tuning enclosed divisions

    What?  No mixtures next to the swell shutters?  Hmmmm.  A Koppleflote behind that Principal.  That must be fun to tune.  You reach over the pitch rank of the division to get at the Koppleflote.  A two story Swell division....and the upper level is always at the same temperature as the lower level...right?  Don't fall off that walkboard!
    ....."next" is a four letter word. Jay999
  •  07-19-2008, 12:47 PM 58642 in reply to 58120

    Re: Tuning enclosed divisions

    Actually that organ is typically right on 440 if the room has been cooled over night to 70 degrees.

    The mixture in the chior division is against the walk board and is not visible. The tuning stop is the tapperd frosted tin stop on the chest twords the front of the pic.

    But yes... watch your step in the swell division. There is no hand rail along the walkboard

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