<VV> Monza clock diode install

[jvhroberts at aol.com]

 The diode totally kills the back EMF that produced arcing across the points, substantially increasing their life span. 

 

John Roberts
 

 

-----Original Message-----
From: Daniel Monasterio <dmonasterio at hotmail.com>
To: jvhroberts <jvhroberts at aol.com>; Matt Nall <patiomatt at aol.com>; VirtualVairs <virtualvairs at corvair.org>
Sent: Mon, Feb 13, 2012 8:39 pm
Subject: RE: <VV> Monza clock diode install


I'm really concerned about this topic. What for is the addition of a diode in this case ?
Not sure about my memory but, remember on using a capacitor (or condenser ?) to make the clock points last for a longer time, as it minimizes the arc when the points open.
What for is the diode ?


Daniel Monasterio




>  Actually, Matt, putting the diode across the clock terminals won't do anything. The diode needs to dump the back EMF when the points open. So, the diode needs to either be a shunt across the coil or across the points. And the points end of the coil isn't accessible from outside the clock housing. 
> 
>  
> 
> John Roberts