[HAM] Recapping generators

[Michael Fulk]

My  dear loving God!!!

The shunt resistance wires are there to lower the overall impedance of the
tonewheel coil in order for "additive synthesis" to occur.

As the Hammond Organ's invention depends on this additives synthesis for
its very raison d'etre, cutting shunt wires from tone wheel coils is
destroying the instrument.

Those coils, as is, sans the shunt, become high impedance because of their
many turns[omitting other poop for sake of clarity].

Very bad ju-ju.

Sincerely,
Michael Fulk
P.S. Coil can be restored by installing 16 ohm carbon[or other
material]resistor.




> [Original Message]
> From: kai lammervo <tonecab at yahoo.com>
> To: The Hammond Forum <hammond at zeni.net>
> Date: 8/20/2006 3:55:55 AM
> Subject: Re: [HAM] Recapping generators
>
>
>
> Organfreak <scott195 at centurytel.net> wrote:        At 07:58 AM 8/19/2006,
kai lammervo wrote:
> > > or "why R/C filters don´t work in pre-65 units?".
> >
> >That's not true either. It's nonsense.
> >
>
> I don´t know if this is just your usual provocative style, but try to
deny this:
>    
>    As you can see in latest version of schematics(A100, afaik) tones
37-43 are shunted to ground via 16ohm resistance wire. Tones 44-48 have
transformers on them.
>    
>   Later post -64 TG´s don´t have these resistance wires on tones 37-43 or
transformers on tones 44-48, just those R/C filters on tones 37-48. Just 
look at the top of TG and you see empty holes where those transformers used
to be. Bells ringing?
>    
>   Only way to make R/C filters work like they should in pre-65 TG´s is to
remove those transformers on tones 44-48, AND to cut those resistance 
wires on tones 37-43. After that tones 37-48 are considerably LOUDER than
before, so you have to pull back those  pick-up rods slightly to maintain
levels you had before! Cutting those resistance wires is extremely
dangerous because they are wound around those pick-up bobbins.  There´s
great danger you cut the pick-up coil too, and then you are in trouble.
>
> If you just add those R/C filters without cutting those resistance wires
and removing those transformers you have to push forward slightly those
pick-up rods to maintain same level, and that makes those tones sound thin
and slightly distorted! Have I seen some company selling these, but not
telling the whole truth...
>  
>    
>    
>    
>   >I have "R/C filters" on my 1956 C-3 (1962 generator). They work just
fine.
>
>
> What did I say above?
>
>
> You denied also that post -64 TG´s sound different. You MUST know that
resonance circuits in later TG´s had higher Q-factor than before. No need
to explain how it affects to the sound? 
>
> I still wonder if there have been more types of resonance circuits than
just two? Anybody?
>
>
> Did I miss something? My apologies to techs who don´t want this
information out there! Yes, I was provocated...