Please note that the PICTURE UPLOAD function is not working. The iBoats Forum Moderators are working with the system administration folks at the parent company to get the issue resolved. This happened about a year ago and here we are again. In the meantime you can post photos as links to a picture hosting site of your choice. We are sorry about the inconvenience and will advise when the issue is resolved. Thank you for your patience.
How do I determine the prop diameter and pitch that I now have? I don't see any stampings on the outside of the prop, do I need to remove it and look on the backside of the hub? This is on a 2003 40hp Merc 2stroke.
They are usually stamped in the metal on the hub between two blades. If not take to any prop shop. The stampings are not 100% reliable if you did not buy the prop new as others in its history may have have had it repitched.
Thanks SL, I'll take it off and look a little closer. It is a new prop that came on the boat last year. I don't think it has enough pitch because I can easily overrev the engine when I trim up.
To get the right prop you need a tachometer and then determine the rpm at wide open throttle - compare it with the specs for your motor.<br /><br />Not all needed changes point to the prop. You may have to raise or lower your motor on the transom as well - best do this first if need be.
