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Vibroplex Pendulum Spring Mod for Slower Speed

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  • wz4cw@comcast.net
         Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed
    Message 1 of 9 , Jan 25, 2011
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           Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed notches in the spring, and the other had ground a slot in the spring.  While this type of non-reversable modification to the pendulum spring is not advised, they were correct in looking at the pendulum spring as a way to adjust the pendulum oscillation period.  This is in addition to the placement of weights on the pendulum itself.

           Actually, Vibroplex had already addressed this modification concern years ago.  In 1940, John La Hiff had patented a new type of adjustable pendulum spring.  It was first used in a new model Presentation Vibroplex beginning in 1948.  This bug looked like a Deluxe Original, but it also had a gold plated brass plate and the La Hiff adjustable pendulum spring.  One end of the spring was riveted to the rear part of the pendulum, but the other end of the spring slipped into a slot in the front part of the pendulum and was retained by two screws.  This adjustable spring could be made longer or shorter to control the speed.  The Presentation was made this way until 1978.  Beginning in 1979, Presentation models ceased to feature the La Hiff spring.

           Presentation models with the La Hiff adjustable spring are scarce.  However, one can really make a Vibroplex collection stand out.  I'm smiling because I have one.

       

      73  Carl  WZ4CW     SKCC 918     FISTS 13491
       

      .

    • k4oso@aol.com
      Carl, I have seen the filed notch mod on a Vibroplex and it does indeed slow the oscillations. The one I owned would have been impossibly rigid without the
      Message 2 of 9 , Jan 25, 2011
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        Carl,
        I have seen the filed notch mod on a Vibroplex and it does indeed slow the oscillations.  The one I owned would have been impossibly rigid without the mod. 
         
        Like you, I'm also smiling cuz I have Presentations with the La Hiff adjustable mainspring:  one "righty" and  one "lefty".
        73, Milt k4oso
         
        In a message dated 1/26/2011 12:25:55 AM Eastern Standard Time, wz4cw@... writes:

             Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed notches in the spring, and the other had ground a slot in the spring.  While this type of non-reversable modification to the pendulum spring is not advised, they were correct in looking at the pendulum spring as a way to adjust the pendulum oscillation period.  This is in addition to the placement of weights on the pendulum itself.

             Actually, Vibroplex had already addressed this modification concern years ago.  In 1940, John La Hiff had patented a new type of adjustable pendulum spring.  It was first used in a new model Presentation Vibroplex beginning in 1948.  This bug looked like a Deluxe Original, but it also had a gold plated brass plate and the La Hiff adjustable pendulum spring.  One end of the spring was riveted to the rear part of the pendulum, but the other end of the spring slipped into a slot in the front part of the pendulum and was retained by two screws.  This adjustable spring could be made longer or shorter to control the speed.  The Presentation was made this way until 1978.  Beginning in 1979, Presentation models ceased to feature the La Hiff spring.

             Presentation models with the La Hiff adjustable spring are scarce.  However, one can really make a Vibroplex collection stand out.  I'm smiling because I have one.

         

        73  Carl  WZ4CW     SKCC 918     FISTS 13491

         
      • wz4cw@comcast.net
        Milt-    That s why they re scarce - you have two!   LOL   I can t remember who, but I think it was you -  Were you saying that you had an idea to make
        Message 3 of 9 , Jan 25, 2011
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          Milt-

             That's why they're scarce - you have two!   LOL   I can't remember who, but I think it was you -  Were you saying that you had an idea to make "Vibroplex" style bug carrying cases like the old ones?  Maybe some day?  If so, were you aware that the very first cases were wood only?  No leatherette-   I think I have a couple of copies of old Vibroplex ads, showing a carry case-  Would you be interested?  If you ever get into case making, put a leather handle on it, not a new type plastic one-  You must be like me ,  up all night-
          73     Carl  WZ4CW   SKCC 918     FISTS 13491

           
        • richard_meiss
          Hi, All - More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate
          Message 4 of 9 , Jan 27, 2011
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            Hi, All -

            More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate really gold plated? I hate to try to polish it and find out that the gold layer is only a micron thick. Has anyone priced a replating job for just the decorative plate?

            73 de Rich, WB9LPU


            --- In cw_bugs@yahoogroups.com, wz4cw@... wrote:
            >
            >
            >
            >      Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed notches in the spring, and the other had ground a slot in the spring.  While this type of non-reversable modification to the pendulum spring is not advised, they were correct in looking at the pendulum spring as a way to adjust the pendulum oscillation period.  This is in addition to the placement of weights on the pendulum itself.
            >
            >      Actually, Vibroplex had already addressed this modification concern years ago.  In 1940, John La Hiff had patented a new type of adjustable pendulum spring.  It was first used in a new model Presentation Vibroplex beginning in 1948.  This bug looked like a Deluxe Original, but it also had a gold plated brass plate and the La Hiff adjustable pendulum spring.  One end of the spring was riveted to the rear part of the pendulum, but the other end of the spring slipped into a slot in the front part of the pendulum and was retained by two screws.  This adjustable spring could be made longer or shorter to control the speed.  The Presentation was made this way until 1978.  Beginning in 1979, Presentation models ceased to feature the La Hiff spring.
            >
            >      Presentation models with the La Hiff adjustable spring are scarce.  However, one can really make a Vibroplex collection stand out.  I'm smiling because I have one.
            >
            >
            >
            > 73  Carl  WZ4CW      SKCC 918     FISTS 13491
            >  
            >
            >
            >
            > .
            >
          • wz4cw@comcast.net
            Rich-      The Gold Plate is a brass plate that has been gold plated.  I would be very careful when doing any polishing.  I don t know for a fact how
            Message 5 of 9 , Jan 27, 2011
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              Rich-

                   The "Gold Plate" is a brass plate that has been gold plated.  I would be very careful when doing any polishing.  I don't know for a fact how thick the plating is, but I would guess that it is relatively thin.  Before Vibroplex moved from Mobile, AL, I spoke with employees there.  They cautioned me to be very careful with any attempt to polish the plate.  They quoted me a price of $80 for a complete new "Gold Plated" plate.  However, the plates seem to be custom made.  I'm guessing this, because they told me that to get a new plate, I would have to ship them the "chrome base" that I wanted the plate for so they could match all the holes in it.  I don't know if gold plates are available from Vibroplex Knoxville.  Since you already have a plate, you might inquire locally about replating it and the cost.  Good Luck!

              73    Carl  WZ4CW    SKCC 918     FISTS 13491

              ----- Original Message -----
              From: "richard_meiss" <wb9lpu@...>
              To: "cw bugs" <cw_bugs@yahoogroups.com>
              Sent: Thursday, January 27, 2011 8:55:57 PM
              Subject: [cw_bugs] Re: Vibroplex Pendulum Spring Mod for Slower Speed

               

              Hi, All -

              More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate really gold plated? I hate to try to polish it and find out that the gold layer is only a micron thick. Has anyone priced a replating job for just the decorative plate?

              73 de Rich, WB9LPU

            • Jerry
              I received an e-mail the other day from Scott W4PA at Vibroplex regarding a Gold Base Triple Key.. his reply; Please note - I m not building the gold plated
              Message 6 of 9 , Jan 28, 2011
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                I received an e-mail the other day from Scott W4PA at Vibroplex regarding a Gold Base Triple Key.. his reply;
                Please note - I'm not building the gold plated version right now as I am having trouble finding quality plating work.  Chrome version built to order, no charge made to your credit card until it ships.  We also have dust covers available for the triple key.
                
                73
                Scott Robbins
                W4PA
                
                So he 'May Not' be building Any Gold Base models at this time..so, yes, do be careful if trying to polish yours..you may have trouble replacing it ! Perhaps you can as him for advice on polishing ?  His e-mail   vibroplexknoxville@...
                Jerry VE6CPP

                On 1/27/2011 9:44 PM, wz4cw@... wrote:  

                Rich-

                     The "Gold Plate" is a brass plate that has been gold plated.  I would be very careful when doing any polishing.  I don't know for a fact how thick the plating is, but I would guess that it is relatively thin.  Before Vibroplex moved from Mobile, AL, I spoke with employees there.  They cautioned me to be very careful with any attempt to polish the plate.  They quoted me a price of $80 for a complete new "Gold Plated" plate.  However, the plates seem to be custom made.  I'm guessing this, because they told me that to get a new plate, I would have to ship them the "chrome base" that I wanted the plate for so they could match all the holes in it.  I don't know if gold plates are available from Vibroplex Knoxville.  Since you already have a plate, you might inquire locally about replating it and the cost.  Good Luck!

                73    Carl  WZ4CW    SKCC 918     FISTS 13491

                ----- Original Message -----
                From: "richard_meiss" <wb9lpu@...>
                To: "cw bugs" <cw_bugs@yahoogroups.com>
                Sent: Thursday, January 27, 2011 8:55:57 PM
                Subject: [cw_bugs] Re: Vibroplex Pendulum Spring Mod for Slower Speed

                 

                Hi, All -

                More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate really gold plated? I hate to try to polish it and find out that the gold layer is only a micron thick. Has anyone priced a replating job for just the decorative plate?

                73 de Rich, WB9LPU

              • Steve
                Rich, Carl and Jerry, The gold was polished off the brass plate of my Presentation, with ease. But, the brass is shiny. Story - I bought the Presentation for
                Message 7 of 9 , Jan 28, 2011
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                  Rich, Carl and Jerry,
                   
                  The gold was polished off the brass plate of my Presentation, with ease.  But, the brass is shiny.
                   
                  Story - I bought the Presentation for a very good price.  The second jewelry store I approached had a real jewelry repair and design person.  He offered his shop and himself to assist in cleaning the bug at no charge !
                       He gave me a handful of small plastic bags and told me to disassemble the key placing a part to a bag; then return.  I did.
                       Our cleaning assembly line had that key shimmering.  Alas, the gold was gone.  The bug sounds the same.  It catches your eye from inside the glass cabinet.  I am beginning to cry.
                  Steve, NU7T
                   
                  FCC Section 97.313(a)  At all times, an amateur station must use the minimum transmitter power necessary to carry out the desired communications.
                   
                   
                • w2blc
                  This company might just offer the perfect answer for replating the gold plate on a Vibroplex Presentation: http://www.caswellplating.com/pickakit/index.html
                  Message 8 of 9 , Jan 28, 2011
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                    This company might just offer the perfect answer for replating the "gold" plate
                    on a Vibroplex Presentation:
                    http://www.caswellplating.com/pickakit/index.html


                    --- In cw_bugs@yahoogroups.com, "richard_meiss" <wb9lpu@...> wrote:
                    >
                    > Hi, All -
                    >
                    > More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate really gold plated? I hate to try to polish it and find out that the gold layer is only a micron thick. Has anyone priced a replating job for just the decorative plate?
                    >
                    > 73 de Rich, WB9LPU
                    >
                    >
                    > --- In cw_bugs@yahoogroups.com, wz4cw@ wrote:
                    > >
                    > >
                    > >
                    > >      Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed notches in the spring, and the other had ground a slot in the spring.  While this type of non-reversable modification to the pendulum spring is not advised, they were correct in looking at the pendulum spring as a way to adjust the pendulum oscillation period.  This is in addition to the placement of weights on the pendulum itself.
                    > >
                    > >      Actually, Vibroplex had already addressed this modification concern years ago.  In 1940, John La Hiff had patented a new type of adjustable pendulum spring.  It was first used in a new model Presentation Vibroplex beginning in 1948.  This bug looked like a Deluxe Original, but it also had a gold plated brass plate and the La Hiff adjustable pendulum spring.  One end of the spring was riveted to the rear part of the pendulum, but the other end of the spring slipped into a slot in the front part of the pendulum and was retained by two screws.  This adjustable spring could be made longer or shorter to control the speed.  The Presentation was made this way until 1978.  Beginning in 1979, Presentation models ceased to feature the La Hiff spring.
                    > >
                    > >      Presentation models with the La Hiff adjustable spring are scarce.  However, one can really make a Vibroplex collection stand out.  I'm smiling because I have one.
                    > >
                    > >
                    > >
                    > > 73  Carl  WZ4CW      SKCC 918     FISTS 13491
                    > >  
                    > >
                    > >
                    > >
                    > > .
                    > >
                    >
                  • Earl Needham
                    Thanks for that! My 56 Presentation has a small area where the plating is missing, and I made it worse trying to cleans something off where it really wasn t
                    Message 9 of 9 , Jan 28, 2011
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                      Thanks for that! My '56 Presentation has a small area where the plating is missing, and I made it worse trying to cleans something off where it really wasn't dirty. I'll have to look into replating it when I get home.

                      Vy 7 3
                      Earl
                      KD5XB

                      KD5XB -- Earl Needham http://groups.yahoo.com/group/cw_bugs Quoting from the Coast Guard: ZUT Posted via Blackberry


                      From: "w2blc" <w2blc@...>
                      Sender: cw_bugs@yahoogroups.com
                      Date: Sat, 29 Jan 2011 01:06:38 -0000
                      To: <cw_bugs@yahoogroups.com>
                      ReplyTo: cw_bugs@yahoogroups.com
                      Subject: [cw_bugs] Re: Vibroplex Pendulum Spring Mod for Slower Speed

                       

                      This company might just offer the perfect answer for replating the "gold" plate
                      on a Vibroplex Presentation:
                      http://www.caswellplating.com/pickakit/index.html

                      --- In cw_bugs@yahoogroups.com, "richard_meiss" <wb9lpu@...> wrote:
                      >
                      > Hi, All -
                      >
                      > More smiles here - I checked my Original Presentation, and it has the La Hiff spring. Which brings me to the next question - is the gold base plate really gold plated? I hate to try to polish it and find out that the gold layer is only a micron thick. Has anyone priced a replating job for just the decorative plate?
                      >
                      > 73 de Rich, WB9LPU
                      >
                      >
                      > --- In cw_bugs@yahoogroups.com, wz4cw@ wrote:
                      > >
                      > >
                      > >
                      > >      Several days ago, two persons were telling how they each had modified the pendulum spring on a Vibroplex bug to slow its speed.  One had filed notches in the spring, and the other had ground a slot in the spring.  While this type of non-reversable modification to the pendulum spring is not advised, they were correct in looking at the pendulum spring as a way to adjust the pendulum oscillation period.  This is in addition to the placement of weights on the pendulum itself.
                      > >
                      > >      Actually, Vibroplex had already addressed this modification concern years ago.  In 1940, John La Hiff had patented a new type of adjustable pendulum spring.  It was first used in a new model Presentation Vibroplex beginning in 1948.  This bug looked like a Deluxe Original, but it also had a gold plated brass plate and the La Hiff adjustable pendulum spring.  One end of the spring was riveted to the rear part of the pendulum, but the other end of the spring slipped into a slot in the front part of the pendulum and was retained by two screws.  This adjustable spring could be made longer or shorter to control the speed.  The Presentation was made this way until 1978.  Beginning in 1979, Presentation models ceased to feature the La Hiff spring.
                      > >
                      > >      Presentation models with the La Hiff adjustable spring are scarce.  However, one can really make a Vibroplex collection stand out.  I'm smiling because I have one.
                      > >
                      > >
                      > >
                      > > 73  Carl  WZ4CW      SKCC 918     FISTS 13491
                      > >  
                      > >
                      > >
                      > >
                      > > .
                      > >
                      >

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