[ On Mon, 10 Sep 2007 17:49:25 -0700, jon_banquer Should I start listing all the people / companies with no mechanical engineers who have designed their own engines, gearboxes, etc ] After being repeatedly asked to post the list you offered to post you shut up Jon and don't post it, why is that Jon? Oh! Never mind I know. You made it up, when called can't post any examples, real examples just excuses for not posting them. Tom