Yetti Posted November 17, 2018 Report Share Posted November 17, 2018 Depending on the prop length you may have taken the tips super sonic. That's bad for a prop. Quote Link to comment Share on other sites More sharing options...
Peter T Posted November 18, 2018 Author Report Share Posted November 18, 2018 Thank you all for your input. Factory tack was fairly accurate at 2000 RPM. I will check it at high RPM and go from there. Quote Link to comment Share on other sites More sharing options...
thinwing Posted November 19, 2018 Report Share Posted November 19, 2018 On 11/16/2018 at 1:12 PM, mooniac15u said: When Mandatory SBs come up there's usually a chorus of folks pointing out that SBs aren't mandatory for part 91. I'm curious whether this SB is a CYA for Lycoming or if there is evidence that overspeed usually causes actual damage. Do any of the pros on MS have experience with overspeed teardowns? This is a serious question with no intent to be argumentative. Not recommending anything,but I had a O360 on a an experimental S1S ,fixed pitch solid crank that I routinely operated at 3200 rpm during maneuvers... Quote Link to comment Share on other sites More sharing options...
thinwing Posted November 19, 2018 Report Share Posted November 19, 2018 Also as I recall,we took advice of IAC ,and halved the TBO....some accelerated wear on rockers but nothing unusual...note we were 500 rpm over stock ,probably developing 235 hp from an engine originally designed for 180 Quote Link to comment Share on other sites More sharing options...
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