High RPM Problem
I bought a used 1989 Bass Tracker 1600 TF with a
115HP Johnson V4 motor. This boat has an inset transom at the bottom.
As I accelerate to WOT the Tach shoots past the 5500 mark almost at 1/2 to
2/3s WOT. I don't press the issue so I cannot get up on plane.
There is also a porpoising problem. The current prop is a Raker
stainless....it only has "Raker" imprinted on the hub so I don't
know the pitch. I believe it is a 13" prop with 3 blades. The
motor is mounted on an aluminum wedge plate and has been lowered to the
last hole in the motor mount. To lower the RPMs I have to reduce
speed and drop trim creating a rough ploughing ride. I have not been
able to test for rockers yet. Thought maybe you had some ideas...it
seems like I am very under-propped.
Please submit whatever questions you have to IHRTechTalk@yahoo.com. 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.
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