Posted for Charlie Kohler <charliekohler@yahoo.com>:

 
 Walter ,
 Sure, I don't see a problem with that at all. As a course teaches, detonation
is always nearby  (1 inch on the red knob) but it's not always destructive.
 I guess you could say there's detonation and then there's DETONATION.
 So the explanation of light/ medium /heavy need to be quantified with actual
temperatures/pressures.  The melting point / time of  exposure the piston
 gets
 would determine whether or not it was eroded.
 
 Charlie K.
 
 
 ----- Original Message ----
From: Walter Atkinson <walter@advancedpilot.com>
 To: Lancair Mailing List <lml@lancaironline.net>
 Sent: Sunday, April 30, 2006 1:52:02 PM
 Subject: [LML] Re: Hot pistons
 
 
 On Apr 27, 2006, at 9:57 PM, Charlie Kohler wrote:
 
 Detonation erodes the center of the piston.
 
 Charlie:
 
 Remember the cylinder we showed in class that had 20 hours of light
 detonation, 3-4 hours of medium detonation and about 30 minutes of
 heavy detonation that looked absolutely pristine and showed no signs
 whatsoever of any damage?  How does that reconcile with the above?