Messages

Stu

Thanks for your reply.  I have read everything that I can find, but I suspect  I may have  missed some old posts.

I  have been  particularly impressed by the work done on black dragon with regards to the Beta 25 installation, and I know that Andrew Harvey was going to install a Beta 30 in his.

I am at the point were I know that I  am re-powering with a Beta Marine 25 or 30, and am trying to figure out if one will be better than the other.

I was unable to  find any details about the performance that Steve and Andrew" experienced with their re-power projects.  And it would be helpful to know what kind of prop size and pitch they were able to swing and the kind of  speed they  were getting.

Thank
John

Has anyone re-powered their Catalina 34 with a Beta 25 or a Beta 30 that can help me decide which would be the best application for my boat?

I have a 16 inch 3 blade max prop and am considering the Beta 25 or Beta 30 each with a 2.5:1 reduction gear.

I am interested in hearing about the prop size that you have used, and at what RPM you are able to hit hull speed at.  Also the cruising RPM that you find best and the boat speed at that RPM.  Additionally, does anyone have any experience with the Beta Marine 25 having too little power or the Beta Marine 30 having too much?

I know it may sound odd that the  Beta Marine 30 may have too much power, but the Beta Marine will swing a larger pitched prop, and could hit hull speed too soon, and not allow the engine to reach  its full  rated RPM.

I don't actually own a Catalina 34, but I have found your forum to be very helpful, and my Sabre 34 MKII has very similar characteristics.  The displacement and water line are almost the same (11900 lbs. displacement and 28.25" water line length)

Thank you so much for your help in advance
John