OSlawyer Posted September 20, 2016 Report Share Posted September 20, 2016 I am contemplating putting a new prop on my 1996 Yamaha Saltwater 130 for my 19' Redfisher after clipping a rock with my current prop. Does anyone have any suggestions as to what might size prop might work the best for this boat and motor combination? Link to comment Share on other sites More sharing options...
lurem Posted September 21, 2016 Report Share Posted September 21, 2016 which prop did you have before? Where you happy with it? Post your previous performance numbers including top speed and Wide open RPM's and I'm sure someone can help you get it dialed in. Link to comment Share on other sites More sharing options...
OSlawyer Posted September 26, 2016 Author Report Share Posted September 26, 2016 I will report as soon as I can get back to my boat to figure out what size prop is on there now. It is a three blade stainless, but size I am unsure of. I do know that wot it runs at 5100 rpms, which seems a bit low. The boat will top out at about 41 mph (per the gps) with 1/3 tank of fuel and one person on board. Link to comment Share on other sites More sharing options...
OSlawyer Posted October 12, 2016 Author Report Share Posted October 12, 2016 I have finally had a chance to get tot he boat and find that I am running a stainless 13-1/4 x 19 three blade prop. My Yamaha 130 Saltwater series engine manual says it should run between 5,000 and 6,000 rmp WOT. I am actually running at 5100 to 5200 WOT. My top speed (as shown by my GPS) is about 41mph. Any suggestions as to what I can do to improve performance? Link to comment Share on other sites More sharing options...
Marshfly Posted October 14, 2016 Report Share Posted October 14, 2016 How far above your keel is the cavitation plate on the motor when it is trimmed level with the bottom of the boat? Link to comment Share on other sites More sharing options...
OSlawyer Posted October 15, 2016 Author Report Share Posted October 15, 2016 The cavitation plate appears to be about 1-1/2" above the step of the hull just below the transom. It is about 6-1/2 to 7" above the keel. Link to comment Share on other sites More sharing options...
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