Well, the motor's in, running and afloat.
I first started it up in late April but I had other projects (new windlass
and strut) to finish before launching the boat.
When I first pulled away from the dock
it seemed all OK but I had to wait for a bridge opening so I shut down the motor
waiting for the train to pass. When I started it back up it seem like I was getting a lot of vibration out of the prop shaft. The higher the RPM
the worse it was.
So, I motored down stream (river) kind of testing as I went. I put it in reverse a few time and rev'd it a bit. It seemed to help just a little towards the end but I needed to dock
it and would deal with it the next day. I figured it was the partly used zink set too far forward from the cutless bearing throwing it out of balance. I couldn't get more then 2400 rpm
w/o it slapping the stern tube. And it was so bad that the PSS wouldn't seal 100%
Yesterday I donned the SCUBA gear
and pulled off the old zink and replaced it with a new one closer to the cutless bearing. While doing so some dumb seal kept messing with my fins.
I'm just glad it wasn't a shark.
This morning I took the boat out again. It seemed to help but I still could not get over 2700 rpm w/o the slapping. I did line up the motor
while on the hard
so I figure it's got to be the boat has reshaped itself in the water
, misaligning the couplers. So I spent the rest of the day re-alinging the couplers, it was only .010" (.25mm) from top to bottom & .006" (.15mm) side to side. I would think a soft coupler adaptor would have taken up any minor misalignment.
It was getting windy and rainy so I just tied the boat to the dock and did a test run.
It did good! I was able to get it all the way up to 3000 rpm w/o any major vibration. I checked the PSS and it was running real smooth w/o a drop. Tomorrow I'll take'r for a real spin.
Soooo, when they say the the couplers need to be aligned while in the water
, that's a TRUE statement!!!! Boats sure do
change shape on the hard
though! My old motor was aligned on the hard and did just fine in the water. Maybe it's the slop in the old used trans bearings that will allow for some error.
We'll see tomorrow!