Silver Maiden made her first run on the new Yanmar 1GM10 today. Her trip from the old marina to the the yard where I did the stuffing box was mostly by sail with a trolling motor to get out of the marina. I did not want to SPRAY salt water all over the engine. That is how bad the stuffing box leaked.
On a 10 minute run from the travel lift to the new marina in calm conditions I was only able to make 3 knots through the water at full throttle. I suspect the 1GM10 does not like the prop that was in use with the Palmer P60.
My understanding on trying to figure out a new prop is that I should make some runs noting speed vs rpm and supply the prop shop with that info and specs on the boat. Easy enough to do, but I have no tach. I also know nothing of how to do a tach on a diesel. I have read about optical tachs. I suspect that is what I have to do, but when I search the interwebs for optical tachs I am finding handheld units. Not very useful when I want to run up and down the bay with the boat.
Can anyone suggest something? I want to in the next few days, while the bottom is CLEAN to run my tests.
On a 10 minute run from the travel lift to the new marina in calm conditions I was only able to make 3 knots through the water at full throttle. I suspect the 1GM10 does not like the prop that was in use with the Palmer P60.
My understanding on trying to figure out a new prop is that I should make some runs noting speed vs rpm and supply the prop shop with that info and specs on the boat. Easy enough to do, but I have no tach. I also know nothing of how to do a tach on a diesel. I have read about optical tachs. I suspect that is what I have to do, but when I search the interwebs for optical tachs I am finding handheld units. Not very useful when I want to run up and down the bay with the boat.
Can anyone suggest something? I want to in the next few days, while the bottom is CLEAN to run my tests.