DIYAPASON-L Digest #652 - Friday, September 20, 2002
 
Re: [Residence Organs]  measuring pressures
  by "John Vanderlee" <jovanderlee@vassar.edu>
Re: [Residence Organs]  measuring pressures
  by "David Scribner" <david@blackiris.com>
Connections
  by <Kzimmer0817@aol.com>
Wiring
  by <Kzimmer0817@aol.com>
Re: [Residence Organs]  Connections
  by "John Vanderlee" <jovanderlee@vassar.edu>
 

(back) Subject: Re: [Residence Organs] measuring pressures From: "John Vanderlee" <jovanderlee@vassar.edu> Date: Fri, 20 Sep 2002 08:32:00 -0700   >On 19 Sep 2002, at 12:51, merbine@bellsouth.net wrote: > > >> know I'll need to measure my own pressure, so is there an easy way of >> measuring these low pressures without a lot of plumbing, etc.? > > > There are usually a number of Dwyer Magnehelic pressure >gauges available on ebay for $10 -$15 . Some of the more common >ones I have seen have a full scale of 2",3", 5" ,10" or 15" w.c. The >gauges have a 1/8" fpt fitting for a hose attachment . > >Olliff Weldon We use the same gauge on our Theatre Wurlitzer. Except that we put little quick-disconnect fittings right in the PVC plumbing. Usually at a joint where there is a lot of "meat" to drill and tap into. The gauge has a hose with the male counter part. so we can check pressures at each rank without having to mess with the pipes.   John V  
(back) Subject: Re: [Residence Organs] measuring pressures From: "David Scribner" <david@blackiris.com> Date: Fri, 20 Sep 2002 07:49:32 -0500   At 10:50 PM -0400 09/19/2002, Olliff Weldon wrote: >On 19 Sep 2002, at 12:51, merbine@bellsouth.net wrote: > > >> know I'll need to measure my own pressure, so is there an easy way of >> measuring these low pressures without a lot of plumbing, etc.? > > > There are usually a number of Dwyer Magnehelic pressure >gauges available on ebay for $10 -$15 . Some of the more common >ones I have seen have a full scale of 2",3", 5" ,10" or 15" w.c. The >gauges have a 1/8" fpt fitting for a hose attachment .   You can also make yourself a manometer out of some plastic tubing fastened to a board. It is a LOT cheaper than buying a Magnehelic gauge.   Basically you mount the tubing in a U shape onto a board - have one end going to a toe hole on the chest and the other end open to the atmosphere. Fill the tubing about 1/2 way with water putting a bit of food coloring into the water so it can be read easily. The water will "balance" itself in the two legs of the U so it will be at the same level in both legs.   When the tubing is pressurized by the chest measure the distance between the two columns of water and that will be your pressure.   It may not be the most elegant solution but it is much cheaper and does the job!   David  
(back) Subject: Connections From: <Kzimmer0817@aol.com> Date: Fri, 20 Sep 2002 08:54:18 EDT     --part1_a4.2c6297cb.2abc747a_boundary Content-Type: text/plain; charset=3D"US-ASCII" Content-Transfer-Encoding: 7bit   List,   I've seen various ways mentioned to connect the cables between console and =   chest when I've viewed ads. I'd like to put junction boards on the end of =   each chest as well as "into" and "leaving" the switching panel. What are y'all using?   1. Modular phone jacks. I guess this includes other modifications. My phone plugs have 4 contacts, but I've seen some that have more. The CAT-5 =   system has more contacts per plug. I guess my question encompasses: what components do you use. Do you end up with a bunch of sockets (enough to cover all the notes) and the cable distributed to as many plugs as needed?   2. Krone connectors - I'm assuming that means the linear male and female plasic connectors that one sees inside other electrical appliances.   3. Pin blocks - what I have right now (all put together in 1972) looks = like headless brads nailed into a long board onto which the wires are soldered.   4. Punch down junctions - I'm thinking that these are the solderless = split connectors that you just punch the insulated wire down into and it automatically cuts thru the insulation and makes contact.   5. Other ideas.   Are there some websites that have examples of these connector setups? I guess one just needs to select a "system" to use and stick with it.   Thanks, Keith   --part1_a4.2c6297cb.2abc747a_boundary Content-Type: text/html; charset=3D"US-ASCII" Content-Transfer-Encoding: 7bit   <HTML><FONT FACE=3Darial,helvetica><FONT SIZE=3D2>List, <BR> <BR>I've seen various ways mentioned to connect the cables between console = and chest when I've viewed ads. &nbsp;I'd like to put junction boards on = the end of each chest as well as "into" and "leaving" the switching panel. = &nbsp;What are y'all using? <BR> <BR>1. &nbsp;Modular phone jacks. &nbsp;I guess this includes other = modifications. &nbsp;My phone plugs have 4 contacts, but I've seen some = that have more. &nbsp;The CAT-5 system has more contacts per plug. &nbsp;I = guess my question encompasses: what components do you use. &nbsp;Do you = end up with a bunch of sockets (enough to cover all the notes) and the = cable distributed to as many plugs as needed? <BR> <BR>2. &nbsp;Krone connectors - I'm assuming that means the linear male = and female plasic connectors that one sees inside other electrical = appliances. <BR> <BR>3. &nbsp;Pin blocks - what I have right now (all put together in 1972) = looks like headless brads nailed into a long board onto which the wires = are soldered. <BR> <BR>4. &nbsp;Punch down junctions - I'm thinking that these are the = solderless split connectors that you just punch the insulated wire down = into and it automatically cuts thru the insulation and makes contact. <BR> <BR>5. &nbsp;Other ideas. <BR> <BR>Are there some websites that have examples of these connector setups? = &nbsp;I guess one just needs to select a "system" to use and stick with = it. <BR> <BR>Thanks, <BR>Keith</FONT></HTML>   --part1_a4.2c6297cb.2abc747a_boundary--  
(back) Subject: Wiring From: <Kzimmer0817@aol.com> Date: Fri, 20 Sep 2002 08:57:28 EDT     --part1_15a.145f6df4.2abc7538_boundary Content-Type: text/plain; charset=3D"US-ASCII" Content-Transfer-Encoding: 7bit   List,   The organ I just purchased has miles of tiny white wires that appear to be = a little larger than darning thread. As they leave the magnet contacts, = they are bound into little cables leading to the console or the relay board.   I've heard that much of the older wiring is no longer meeting codes.   What guage of wiring do y'all use? Do you run individual wires (IOW, not cables) from the magnets to a junction box, then connect an organ cable = from there to the relay board?   thanks, Keith   --part1_15a.145f6df4.2abc7538_boundary Content-Type: text/html; charset=3D"US-ASCII" Content-Transfer-Encoding: 7bit   <HTML><FONT FACE=3Darial,helvetica><FONT SIZE=3D2>List, <BR> <BR>The organ I just purchased has miles of tiny white wires that appear = to be a little larger than darning thread. &nbsp;As they leave the magnet = contacts, they are bound into little cables leading to the console or the = relay board. <BR> <BR>I've heard that much of the older wiring is no longer meeting codes. <BR> <BR>What guage of wiring do y'all use? &nbsp;Do you run individual wires = (IOW, not cables) from the magnets to a junction box, then connect an = organ cable from there to the relay board? <BR> <BR>thanks, <BR>Keith</FONT></HTML>   --part1_15a.145f6df4.2abc7538_boundary--  
(back) Subject: Re: [Residence Organs] Connections From: "John Vanderlee" <jovanderlee@vassar.edu> Date: Fri, 20 Sep 2002 09:36:26 -0700   On our Wurlitzer re-installs we always use the phone system of connectors. Why re-invent the wheel? Another bonus is that if you see an office building being rehabilitated the phone company often strips out and dumps the previous cabling. so we haven't paid for a cable yet!   The beauty is the extensive colorcoding that makes connecting/trouble shooting easier. On a chest we use two 50 pin connectors, a M/F pair for each, already attached to cables. Now the chest or bottom board can be easily disconnected. For distribution we use the phone punchblocks, also salvaged. The punch blocks give you test points as well.   John V