Discussion in 'Boating' started by vlparrish, Feb 25, 2007.

  1. vlparrish

    vlparrish New Member

    Bedford, Kentucky
    I got a new prop for my 15 HP. It isn't running the rpms at top end like the old one did. I noticed the old one(factory Prop) was a bit lighter made and it had a sharp edge. The new one is heavier and has a flat edge that is about 1/8 inch thick. I was wondering if I could feather it a bit with a flat file on the leading edge and if this would help my rpms. I know that racing engines often times have a feathered crank so they can have more power and rpms. Vern
  2. jim

    jim New Member

    Jacksonville NC
    Vern lots of un answered questions!!!! Take your old prop back to your dealer and see what pitch and diameter it is.Sounds like you now have a different pitch which may have dropped your rpm.DON't do anything to the new one until you check this out.Most props have the pitch and diameter engraved somewhere on the hub.:smile2: