DIYAPASON-L Digest #102 - Tuesday, May 30, 2000
 
Question on Zephyr blower alignment
  by "Dave McClellan" <drmc@speedfactory.net>
mixture pipes
  by <Pipewheezr@aol.com>
Re: blower coupling alignment
  by <TheGluePot@aol.com>
 

(back) Subject: Question on Zephyr blower alignment From: "Dave McClellan" <drmc@speedfactory.net> Date: Tue, 30 May 2000 08:52:03 -0400   To Kurt, Al, and other blower mavens on DIYAPASON-L.   I recently purchased an older 2HP Zephyr blower from Kurt. He warned me = to ensure that the blower motor and turbine unit shafts are aligned correctly before applying power (the 2HP Century motor is connected to the turbine input shaft by a resilient coupling mounted between two gear-like = retainers with internal teeth - one on the motor and one on the turbine shaft).   How can I tell if the motor and turbine shafts are correctly aligned?   I have not moved any of the adjustment bolts under the motor, but of = course there is ample slop in the mounting holes to allow misalignment.   Any advice would be appreciated. I would like to fire this baby up and = get some idea of the static pressure. I used Al's formulas (from and article = in "The Glue Pot") but made a lot of assumptions and am not confident of my numbers.   Regards, Dave      
(back) Subject: mixture pipes From: <Pipewheezr@aol.com> Date: Tue, 30 May 2000 11:14:11 EDT   I thought some one on the list was looking for a mixture for there home organ?   Want to Sell: Theatre Organ 3 Rank Mixture Category: Pipe Organs and Parts Wicks 3 rank mixture, voiced for Theatre Organ. 10" wind pressure Revoiced = by top pipe voicer. Was in Plummer Theatre Organ, Fullerton, California. Asking: $500.00 Don Near - donnear@aol.com Santa Ana, Ca USA Telephone: 714-544-1106          
(back) Subject: Re: blower coupling alignment From: <TheGluePot@aol.com> Date: Tue, 30 May 2000 15:40:16 EDT   > To Kurt, Al, and other blower mavens on DIYAPASON-L. > I recently purchased an older 2HP Zephyr blower from Kurt. He warned me = to ensure that the blower motor and turbine unit shafts are aligned = correctly before applying power (the 2HP Century motor is connected to the turbine input shaft by a resilient coupling mounted between two gear-like = retainers with internal teeth - one on the motor and one on the turbine shaft). > How can I tell if the motor and turbine shafts are correctly aligned? > I have not moved any of the adjustment bolts under the motor, but of = course there is ample slop in the mounting holes to allow misalignment. > Any advice would be appreciated. I would like to fire this baby up and = get some idea of the static pressure. I used Al's formulas (from and article = in "The Glue Pot") but made a lot of assumptions and am not confident of my numbers. > Regards, > Dave >>   Hi Dave:   This is my busy season so I am rushed and hope to get this out clearly. = On blowers with separate shafts like the old Kinetics and the Zephyrs I use = an inexpensive magnetic base dial gauge purchased from a machine tool = catalogue and a dial caliper although a micrometer would work if it fits in where = the measurements are taken. The process is one of checking to see that shaft centers are aligned and that they are both on axis. The shafts are turned =   with the dial gauge touching the shafts. If the shafts are OK the dial = gauge will show the same reading for all 360 degrees of rotation. Where the couplings have been lathe turned you may check them also. A couple of thousandths variation is normal with most bearings. Now where the = coupling halves face each other you take your dial caliper and measure several = points around to be sure the coupling faces are parallel. A good coupling will = be lathe turned and you will not get more than a few thousandths difference = in readings. Older blowers could just be checked with a set of outside = calipers by feel and most new ones will be close enough for government specs if = done the same way. I wish we had graphic interfaces on these e-mail computer setups. Let me give it a try: __ __ | | | | _________| | | |____________ | | | | _________| | | |____________ ^ ^ | | | | ^ ^ |__| |__| ^ ^ -------------------------------------------------- both shafts parallel = to line and |<-------->| should be the same face distance all around the coupling   motor side / blower shaft   There is my usual clear-as-mud descriptive narration.   My blower calculations in The Glue Pot were essentially for Spencers with their fluid dynamics but they should get you into the ball park with other =   brands.   Best of luck,   Al Sefl   p.s.: We have a wonderful tool store here on the left coast called Harbor =   Freight Tools. I believe they have a web site. The dial gauge is as low = as $7 on sale and the magnetic base to hold it on sale runs about $8. A dial =   caliper is on sale currently for $15. It is amazing what child slave = labour in China can do. At those prices I leave my American made Starret quality =   instruments in their cases and use the expendible gauges. I sure am proud = of our government for dealing so freely with the People's Republic to get me cheap tools in return for atomic secrets! ;-)