I've searched this forum and haven't found anything quite like the problem I'm having. I'd be grateful for any help or pointers to relevant information I missed.
I have a 1994 Lund Alaskan that worked great with the original 50 hp Yamaha 2-stroke. Sadly after 24 years, I had to replace the outboard last month. I bought a 50 hp Tohatsu 4-stroke. The boat runs great at planning speeds, but has a lot of vibration at lower speeds. I primarily troll, so this is a major problem. It vibrates the floor and pedestal seats so much it is unpleasant to be in after 1/2 hour of trolling.
The installer said the transom was hollow when he drilled the holes to mount the motor, so added cross bars for support. Clearly I wish he'd given me a chance to rebuilt the transom first, but the stern does appear to be sturdy.
Also, many of the rivets in the floor have come come loose and probably should be fixed.
I know the boat needs some work, but I don't want to put a lot of effort in and still end up with the vibration problem. So, I am seeking advice on what I should do for the vibration problem:
- take the outboard off and rebuild the transom with something like CarbonBond that I've seen mentioned elsewhere on this forum
- replace the worn rivets in the floor
- buy a new boat that is built better for the new 4 strokes
- other ideas?
Thanks!
I have a 1994 Lund Alaskan that worked great with the original 50 hp Yamaha 2-stroke. Sadly after 24 years, I had to replace the outboard last month. I bought a 50 hp Tohatsu 4-stroke. The boat runs great at planning speeds, but has a lot of vibration at lower speeds. I primarily troll, so this is a major problem. It vibrates the floor and pedestal seats so much it is unpleasant to be in after 1/2 hour of trolling.
The installer said the transom was hollow when he drilled the holes to mount the motor, so added cross bars for support. Clearly I wish he'd given me a chance to rebuilt the transom first, but the stern does appear to be sturdy.
Also, many of the rivets in the floor have come come loose and probably should be fixed.
I know the boat needs some work, but I don't want to put a lot of effort in and still end up with the vibration problem. So, I am seeking advice on what I should do for the vibration problem:
- take the outboard off and rebuild the transom with something like CarbonBond that I've seen mentioned elsewhere on this forum
- replace the worn rivets in the floor
- buy a new boat that is built better for the new 4 strokes
- other ideas?
Thanks!