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Old 09-14-2013, 08:32 AM
matttillman matttillman is offline
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Boat: M/C Prosatar 190, 1990
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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!
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  #2  
Old 09-14-2013, 08:44 AM
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clrussell clrussell is offline
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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
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Old 09-14-2013, 08:46 AM
Cloaked Cloaked is offline
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Quote:
Originally Posted by matttillman View Post

Questions - does pretty minor damage (slightly bent blade) cause noticEable vibration?
yes..
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Old 09-14-2013, 08:46 AM
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mikeg205 mikeg205 is offline
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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.
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Old 09-14-2013, 08:57 AM
matttillman matttillman is offline
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Join Date: Nov 2009
Boat: M/C Prosatar 190, 1990
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Thanks guys! Ill check the shaft when I pull the prop tomorrow.
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  #6  
Old 09-14-2013, 09:04 AM
matttillman matttillman is offline
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Sorry, what should my tolerance be?
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  #7  
Old 09-14-2013, 09:17 AM
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clrussell clrussell is offline
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I think Tolerance is .003?
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Old 09-14-2013, 10:54 AM
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Lumbergh Lumbergh is offline
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Boat: 1991 ProStar 190
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I got some lake weed from the shallows taking boat out end of last season.

Definite vibration. It doesn't take much...
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  #9  
Old 09-14-2013, 02:38 PM
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pmikler pmikler is offline
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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.
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Old 09-16-2013, 07:32 PM
snork snork is offline
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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???

Last edited by snork; 09-16-2013 at 10:46 PM.
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