----- Original Message -----
Sent: Monday, June 11, 2007 1:48 PM
Subject: [FlyRotary] Re: MSD type
Ignition CD or not? was Re: Spark Plug Cleaning
Im almost certain it was Ed.
Bob Mears
Supermarine Spitfire
-----Original Message-----
From: Ed
Anderson
To: Rotary motors in aircraft
Sent: Mon, 11 Jun 2007 9:01 am
Subject:
[FlyRotary] MSD type Ignition CD or not? was Re: Spark Plug
Cleaning
Given the interest in getting rid of SAG - its important
that we are all on the same wavelength when discussing components. For
example, there are a whole bunch of different MSD ignition systems out there -
I'm not certain that they are all Capacitive Discharge types. It may
made a difference regarding their ability to avoid/delay on set of SAG.
At least Lynn's assessment about the rise time of the CD
type driven coils being so fast as not to permit much voltage leakage
via the lead deposits and thereby avoiding SAG seemed to make sense to
me.
So the question to Bob Mears is do you recall whether
the MSD system being used was a Capacitive Discharge type?
Thanks!
Ed
----- Original Message -----
Sent: Monday, June 11, 2007 8:56
AM
Subject: [FlyRotary] Re: Spark Plug
Cleaning
SAG can appear any where apparently. We
ran a MSD system on our race care and still ran into the
problem. The problem ended when we switched to alcohol,
but thats not a fix for airplanes!
Bob
Mears
Supermarine spitfire