From: Barry Lovelock
Date: 17 Aug 2002
Time: 08:08:49
Remote Name: 62.6.78.241
I did think about the ball and ring thing at school, but so long ago, had forgotten the result!
As I truthfully suspected - it's an A7 so it doesn't really matter!!
Worth reading John Sutton's notes on pressurised engine cam bearings again now, which may have some application to the next question.
Barry.