Mark Wrathall wrote:

Mark wrote:
"...He gave me a copy of a free drag magazine called

 Drag Sport. It has an articale in the rotary by Jim Mederer in it

which has

 some good points on the differences in thermal stresses between the

leading

 and training plugs."

Paul wrote:
Mark can you scan that article and upload it?

Mark wrote:
Sorry Paul, I left it on a table in Copenhagen airport. Brian, can you swing
by Hayes and grab another copy?

The gist of Mederer's article was that the trailing plug see's a duty cycle
of over 70% immersion in combustion gas, were the leading plug is down
around 25%.

 
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