Knocking noise from the transom

[fishless]

Ok heres whats going on. at trolling speeds i get a LOUD knocking from either my bell housing or transom ring.

It sent me home early from a trip to Olcott this week. I got home and pulled the outdrive off. the gimbel bearing is new and still good. I own the expensive engine alignment tool. everything is good there. now my bell housing moves side to side I think way to much and the transom ring move up and down alot.

Would this make a noise like i am hearing? The outdrive and driveshaft are ok other that maybe my prop is out of balance.

Somebody help me please ,my old battle wagon ain't catching fish this way.

thanks Jim

[GAMBLER]

There are flaps that keep water from coming back into the engine that have rubber on them. Over time the rubber will wear off and you will hear a clapping noise at low speeds. I had mine replaced 2 seasons ago and they are doing it again. When my gimball bearing went, it made my boat sound like it was a deisel engine not a gas engine.

[fishless]

thanks gambler

new water flaps in her and gimble bearing is as new condition. recently replaced.

Jim

[jimski2]

"Old" may mean your engine stringers and transom could be rotten and your engine mounts are loose?

[jimski2]

A hint here is the new gimbal bearing recently installed, why?

[L&M]

Check & make sure the gimble bearing is properly seated in the housing.

[fishless]

Transom and stringers where replaced two years ago by a marina in ohio. they took the top half of the boat off to do it. the owner before me showed me the bill. glad i didn't have to pay for that.

I replaced the bellows and gimble bearing for good measure before i started fishing her.

Hank, I will check to see if I did seat the bearing all the way in. may be my bad. The owner before me used it as a ski boat. so I think he was kinda hard on it.

Thanks a ton guys.

Jim

[seasquirrel]

coupler going bad? does it change sounds if you trim it up?

[fishless]

Yes... it was going away if I trimmed up at the first days of our trip. Then it would not go away thought i was going to have to get towed in by the end.

Jim

[seasquirrel]

i would lean and listen to hank. Sounds like a gimbal bearing to me too