PSN-L Email List Message

Subject: Re: Oil Furnace Nozzle Connection
From: "Connie & Jim Lehman" lehmancj@...........
Date: Sat, 17 May 2008 06:58:09 -0400


Gary--the use of an oil furnace nozzle was adopted in the original =
design as it it made a clean "hinge" for the wire support.  We got the =
idea from a support for a 6 ft. Foucault Pendulum demo that worked well. =
 The nozzle used had a half inch screw area.  We drilled a half inch =
hole is the upper crosspiece at an angle the wire support wire would =
be--making a snug fit,  Then epoxy the nozzle in place.  Whatever wire =
is chosen must support the mass without fatigue, and must pass through =
the nozzle---enlarge the opening as necessary--but make it snug.  Drill =
a small hole on the back side of the upper crosspiece, bring the wire =
out and anchor.  If everything is pretty well in line, there is little =
stress on the nozzle--and it can do its thing!
  There are other designs for the hinges-upper & lower-- that work =
well--Whatever you choose   you want stability with a good structural =
support and minimal fatigue over time.

Best wishes,  Jim Lehman
  ----- Original Message -----=20
  From: Gary Lindgren=20
  To: PSN List=20
  Sent: Friday, May 16, 2008 6:13 PM
  Subject: Oil Furnace Nozzle Connection


  The typical Lehman uses an oil furnace nozzle as a connection point =
for the upper end of the music wire that is attached to the boom. What =
method is used to modify the nozzle in order to fasten the wire. What =
modifications are made.

  Thank you

  Gary Lindgren

  =20

  =20

  =20

  =20

  Gary Lindgren

  585 Lincoln Ave

  Palo Alto CA 94301

  =20

  650-326-0655

  =20

  www.blue-eagle-technologies.com

  cymonsplace.blogspot.com=20

  =20







Gary--the use of an oil furnace nozzle = was adopted=20 in the original design as it it made a clean "hinge" for the wire = support. =20 We got the idea from a support for a 6 ft. Foucault Pendulum demo = that=20 worked well.  The nozzle used had a half inch screw area.  We = drilled=20 a half inch hole is the upper crosspiece at an angle the wire support = wire would=20 be--making a snug fit,  Then epoxy the nozzle in place.  = Whatever wire=20 is chosen must support the mass without fatigue, and must pass through = the=20 nozzle---enlarge the opening as necessary--but make it snug.  Drill = a=20 small hole on the back side of the upper crosspiece, bring the wire = out and=20 anchor.  If everything is pretty well in line, there is little = stress on=20 the nozzle--and it can do its thing!
  There are other designs for the = hinges-upper=20 & lower-- that work well--Whatever you choose   you = want=20 stability with a good structural support and minimal fatigue = over=20 time.
 
Best wishes,  Jim = Lehman
----- Original Message -----
From:=20 Gary=20 Lindgren
To: PSN List
Sent: Friday, May 16, 2008 6:13 = PM
Subject: Oil Furnace Nozzle=20 Connection

The typical Lehman uses an oil furnace nozzle as = a=20 connection point for the upper end of the music wire that is attached = to the=20 boom. What method is used to modify the nozzle in order to fasten the = wire.=20 What modifications are made.

Thank you

Gary Lindgren

 

 

 

 

Gary=20 Lindgren

585 = Lincoln=20 Ave

Palo Alto = CA=20 94301

 

650-326-0655

 

www.blue-eagle-technologies.com

cymonsplace.blogspot.com 

 


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