Prop for Ranger/Evinrude 225

Hi Randy 

Like everyone I need a little help.  I just bought a 2004 Ranger 621 Fisherman/Evinrude 225 HO.  The prop that came with the rig was a 21" cyclone 4 blade.  I can run 6000 rpms but only get 50 mph.  I have heard that the rpms should be kept closer to 5500 than 6000?  I believe a three blade will give me more top end?  I'm leaning toward a raker, if so what pitch should I look for to bring down the rpms.  Thanks up front for your help. 

Bill Olsen


Most of the 621ís I have done need a 22 Raker. The transom height is too high on that boat, so get the motor as low as you can. Most will run 58 or 60 with the engine down and a 3 blade Raker.




Please submit whatever questions you have to  All questions and answers selected will be displayed on this page as they come in.  Note: though all boaters are welcome, priority may be given to I.H.R. members.  Randy can not be held responsible for any advice given.  Though his information and expertise is second to none, he has no control over what you do with your boat.  It is up to you to boat safely and act responsibly, and his advice is only to be used as a guidance for your high performance boat/motor of which you are the one responsible for the risks involved.

Mark C.


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