On Wed, Nov 26, 2014, at 09:44, Mike Hanz wrote: " use a 1/4" brass rod to pulse the end of the dynamotor shaft as axially as possible." Note Mike's point about "brass". The metal "hitter" should be softer than the "hitee" (i.e. the dyno shaft.) Don't hit steel with steel! - Les -- http://www.fastmail.com - A no graphics, no pop-ups email service