livinisfishin Posted July 4, 2011 Report Share Posted July 4, 2011 I am looking at a mercury 9.9 outboard. I have been told the measurement is 18 inches , does that make it a long shaft? Link to comment Share on other sites More sharing options...
Roy Posted July 4, 2011 Report Share Posted July 4, 2011 The key here would be...WHAT measured 18"? Link to comment Share on other sites More sharing options...
livinisfishin Posted July 4, 2011 Author Report Share Posted July 4, 2011 From the top of the transom bracket to the top of the cavitation plate. Link to comment Share on other sites More sharing options...
Roy Posted July 4, 2011 Report Share Posted July 4, 2011 This is how it is determined. http://www.iboats.com/ref/shaft_length.html Link to comment Share on other sites More sharing options...
livinisfishin Posted July 4, 2011 Author Report Share Posted July 4, 2011 Thanks roy, everything I've read says short shafts are 15" but a couple short shaft motors that I've measured are 18". I've also read that give or take acouple of inches is ok. So hopefully with my 15" transom an 18" motor isn't to bad. Link to comment Share on other sites More sharing options...
Rizzo Posted July 4, 2011 Report Share Posted July 4, 2011 better than having a 15 inch motor on an 18 inch transom! Should be fine the way it is, if it isn't raise the transon a few inches Link to comment Share on other sites More sharing options...
livinisfishin Posted July 4, 2011 Author Report Share Posted July 4, 2011 Thanks rizzo! Link to comment Share on other sites More sharing options...
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