Hello, I have just joined and am looking for some help to find the correct prop size for my boat
My boat is an Australian (I am in Australia) 1989 Riviera 30 Fly bridge, the single engine is a AQAD40B and the Stern drive is a DP280.
I purchased the boat about 9 months ago and was told at the time it is over propped, I can only reach 3200 RPM WOT at about 10 knots. I have been working away fixing and upgrading a long list of jobs to do on the boat and have now come to getting the right sized props, I have been told I need 2 sizes smaller to be able to reach the 3600 RPM WOT. I have removed the rear 4 bladed prop to try and find a part number, which would give me a starting point to ordering new props 2 sizes smaller. However the only number I can find is the number 19 stamped into the hub, I have taken the whole hub back to alloy using paint stripper to remove years of anti foul and a wire bush on a grinder and the number 19 is the only number I can find. I know I need to order A series props to suit the DP280 stern drive. Would anybody have any suggestions on where to start? the boat weighs about 5000kg ( 11,000 lbs), engine and stern drive are mid 80`s both in good working order. I know the boat is under powered and is never going to go anywhere fast, but I would like a suggestion on what A series props to use, thank you for your help
My boat is an Australian (I am in Australia) 1989 Riviera 30 Fly bridge, the single engine is a AQAD40B and the Stern drive is a DP280.
I purchased the boat about 9 months ago and was told at the time it is over propped, I can only reach 3200 RPM WOT at about 10 knots. I have been working away fixing and upgrading a long list of jobs to do on the boat and have now come to getting the right sized props, I have been told I need 2 sizes smaller to be able to reach the 3600 RPM WOT. I have removed the rear 4 bladed prop to try and find a part number, which would give me a starting point to ordering new props 2 sizes smaller. However the only number I can find is the number 19 stamped into the hub, I have taken the whole hub back to alloy using paint stripper to remove years of anti foul and a wire bush on a grinder and the number 19 is the only number I can find. I know I need to order A series props to suit the DP280 stern drive. Would anybody have any suggestions on where to start? the boat weighs about 5000kg ( 11,000 lbs), engine and stern drive are mid 80`s both in good working order. I know the boat is under powered and is never going to go anywhere fast, but I would like a suggestion on what A series props to use, thank you for your help