DIYAPASON-L Digest #21 - Saturday, January 29, 2000 Re: [Residence Organs] Appropriate chest pressure by "Sam Vause" <firstname.lastname@example.org> RE: [Residence Organs] Re: [Residence Organs] Countersinks and othertool by "Louis Huivenaar" <email@example.com> Bouncing reservior by "Eric Sagmuller" <firstname.lastname@example.org> Bouncing reservoir (addition) by "Eric Sagmuller" <email@example.com> Re: [Residence Organs] Bouncing reservior by <Pipewheezr@aol.com> Re: [Residence Organs] Bouncing reservior by "Bernard C. Nordmann" <firstname.lastname@example.org> Re: [Residence Organs] Bouncing reservoir (addition) by <RDoer30176@aol.com>
(back) Subject: Re: [Residence Organs] Appropriate chest pressure From: "Sam Vause" <email@example.com> Date: Sat, 29 Jan 2000 08:48:35 -0700 I hope it helps him as much as it helped me! In my earlier post which started this thread, I mentioned my wind chest's pressure as 1-3/4". I got a private email asking me if this was only one side or both, and I replied "both," because if one column moves up that amount, the other would necessarily move down the same amount (given the tube was equal diameter throughout). It never occurred to me to SUM the = two numbers--how interesting! So, now I understand--the pressure in a wind chest is measured as "the doubled value of displacement of a water column." Cool--that means my = blower is really creating 3.5" pressure, more like what I was expecting... This is a GREAT list! Thanks! --sam Sam Vause (Chandler, AZ) ----- Original Message ----- From: GRSCoLVR@aol.com To: DIYAPASON-L@pipechat.org Sent: Friday, January 28, 2000 3:14 PM Subject: Re: [Residence Organs] Appropriate chest pressure Hi Kelvin--- You can make yourself a wind gauge very easily with a length of clear = tygon or plastic tubing. Say about 6 feet. Tywrap it around a old yardstick = with the 2 legs at the up side of the measuring lines. Fill the tube with = water, enough to get it to some inch marking exactly preferably. make some kind = of cork adapter for the other end of the tube to fit it to the windchest = hole. With note valve open, read the summation of the inches on the measuring device,,,,ie, 3 inches up and 3 inches depressed, =3D6 inch wind. The size = of the tubing makes no difference at all,,,its the weight of the water that does the measuring. Hope this helps, ---Roc
(back) Subject: RE: [Residence Organs] Re: [Residence Organs] Countersinks and othertools From: "Louis Huivenaar" <firstname.lastname@example.org> Date: Sat, 29 Jan 2000 19:04:57 +0100 Hello, It depends which type of pipe you want to put on the toeboard. Each stop has his own measure on the footh of a pipe. A dipason is different than a viola. For example. Louis Huivenaar Netherlands Harmonium and Reedorgan restorer Appraiser under Oath for Harmoniums and Reedorgans in Europe +31 75 684 4858 ( Tel/Fax Factory) +31 75 684 6552 ( Privat) +31 653 117 697 ( Mobil) Website: www.harmoniums.com -----Oorspronkelijk bericht----- Van: DIYAPASON-L@pipechat.org [mailto:DIYAPASON-L@pipechat.org]Namens Bart Kleineweber Verzonden: vrijdag 28 januari 2000 19:37 Aan: DIYAPASON-L@pipechat.org Onderwerp: [Residence Organs] Re: [Residence Organs] Countersinks and othertools Hi Randy and List: The countersinks I got from Tracker Tool Supply were 83 degrees. Buy the = 82 degree set, I don't think 1 degree should make a difference. > >since we're on the topic of burning holes and countersinks, i'm curious >what angle countersink is traditionally used for toeboards? [snip] >they >come in either 60, 82, or 90 degree angles. which should i use? > ______________________________________________________ Get Your Private, Free Email at http://www.hotmail.com DIYAPASON-L: a Discussion list for owners and builders of their own Residence Pipe Organs. HOMEPAGE : http://www.diyapason.pipechat.org List: mailto:DIYAPASON-L@pipechat.org Administration: mailto:owner-DIYAPASON@pipechat.org
(back) Subject: Bouncing reservior From: "Eric Sagmuller" <email@example.com> Date: Sat, 29 Jan 2000 20:05:07 -0800 Hi all, Speaking of reservoirs and the different kinds of valves used I have a problem with a bouncing or oscillating one. I don't know what you'd call the valve it has in it, but it is basically a flapper on the intake that closes against, or (fights against) the incoming air from the blower to regulate the reservoir pressure. This reservior is from an Estey. I am running a 1/2 HP Meidinger blower through about 4' of 8" orgaflex to it. I have only weights on it to regulate the pressure as most of the compass springs were missing. I have some nice Moller reservoirs from Rich Schneider I plan to use in the future, once I releather them, that use curtain valves. But for now I'm using the Estey one so I can have = something to play. The problem is that whenever I play a bass note just in the 8' range, along with some treble notes, the reservoir starts a very annoying bounce or oscillation. Needless to say the instrument becomes very = annoying to play. It sounds like a sick tremulant. Anybody have any ideas on a quick fix for this? I know there are some kind of stabilizers available. Maybe springs would do a better job than = weights. The blower came with the 8" orgaflex attached to it so I just used it that way. It actually only has a 4" outlet. When the reservior is inflated it = is very easy to make it bounce by hand. Thanks, Eric
(back) Subject: Bouncing reservoir (addition) From: "Eric Sagmuller" <firstname.lastname@example.org> Date: Sat, 29 Jan 2000 20:32:04 -0800 Hi all, I forgot to mention in my previous post, I soon hope to have my Spencer spiral ducted up from the basement. This will then replace the Meidinger. Maybe this alone will fix the problem due to less turbulance. I plan to = use a Static reservoir with a baffle and then a baffle at the other end of the line. It was also mentioned to me that I may need another reservoir along with the baffle, at the far end before my chest regulators. Is this necessary? I'll be running 4.5 - 5" wind up to the chamber then the chest reg. will be set at 3". Eric >Speaking of reservoirs and the different kinds of valves used I have a problem with a bouncing or oscillating one.
(back) Subject: Re: [Residence Organs] Bouncing reservior From: <Pipewheezr@aol.com> Date: Sat, 29 Jan 2000 21:22:48 EST When your regulater bounces out off control,the organ guy;s call it galloping.I had one do that,the blower regulater in at 11"and out at 5 or = 6 I don't remember.I tightend up the seal around the rod going from the lid to = the curtain valve.I have seen this more with weighted only = regulaters,springs seem to help dampen the movment.I have been told that a combonation of spring's and weight's are the best and most constant on the regulater. Have a good Sunday Dennis
(back) Subject: Re: [Residence Organs] Bouncing reservior From: "Bernard C. Nordmann" <email@example.com> Date: Sat, 29 Jan 2000 20:25:12 -0600 At 08:05 PM 1/29/00 -0800, you wrote: >Hi all, > >I have only weights on it to regulate the pressure as most of the compass >springs were missing. I do believe you've pinpointed the problem. The weights have inertia. Springs don't. So when you thump the top of the reservoir, or a sudden demand of wind does the same thing, the inertia of the weights along with the storage capacity of the reservoir form a classic resonant circuit, in this case an overdamped circuit which decays to nothing after a while. You also know the answer! Regards. - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Bernie Nordmann, St. Louis, MO -- Owner of a 3/13 Wurlitzer/Barton/Kimball/Dennison/whatever -- Registered Piano Technician, Piano Technicians Guild -- Full time computer consultant - Nordmann Consulting, Inc. -- Amateur radio operator, call sign KV0W -- Husband, father - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
(back) Subject: Re: [Residence Organs] Bouncing reservoir (addition) From: <RDoer30176@aol.com> Date: Sat, 29 Jan 2000 21:39:21 EST In a message dated 00-01-29 20:32:13 EST, you write: > It was also mentioned to me that I may need another reservoir along > with the baffle, at the far end before my chest regulators. Is this > necessary? I'll be running 4.5 - 5" wind up to the chamber then the = chest > reg. will be set at 3". > > Eric Hi Eric and List. If any part of the linkage inside the regulator has any play/slop, that = can cause osciation. Russ