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matttillman 09-14-2013 09:32 AM

I hit a log!
We hit a submerged log yesterday. Terrible noise. We shut everything down, made sure we weren't taking on water and started it back up. Motored idled fine but in gear we had a vibration. Limped it back to the ramp and when out of the water there was only minor damage to the prop - not what I expected from the vibration.

Questions - does pretty minor damage (slightly bent blade) cause noticable vibration? After prop repair anything else that needs to be checked out?

Boat is 1990 PS 190. Thanks!

clrussell 09-14-2013 09:44 AM

While your prop is off check your shaft with a dual indicator. I did same thing, same boat actually. But I think I hit something direct because when mine hit I instantly had such a terrible shake you couldn't get it over idle speeds

waterlogged882 09-14-2013 09:46 AM


mikeg205 09-14-2013 09:46 AM

slightly bent prop can throw the prop out of balance... get a dial indicator to check if shaft is true.

hopefully prop took the brunt of it.

matttillman 09-14-2013 09:57 AM

Thanks guys! Ill check the shaft when I pull the prop tomorrow.

matttillman 09-14-2013 10:04 AM

Sorry, what should my tolerance be?

clrussell 09-14-2013 10:17 AM

I think Tolerance is .003?

Lumbergh 09-14-2013 11:54 AM

I got some lake weed from the shallows taking boat out end of last season.

Definite vibration. It doesn't take much...

pmikler 09-14-2013 03:38 PM

hit a log this year as well. The prop didn't look bent at all at first glance. In short, I had read it doesn't take much but was surprised how little will cause serious vibration.

snork 09-16-2013 08:32 PM

I noticed a post a few days back but can find it for the life of me, the post had a new and a used OJ prop I think it was 13.7x17 or something like that $250???

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