slipping

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rooster1

Seaman
Joined
Jun 14, 2007
Messages
54
i have a 25 hp merc on a 16 ft v hull i have only taken it out 3 times but i have a problem the motor would speed up but the boat wouldnt i took it to a repair shop and the propeller was stripped so they replaced it its still doing it but not as bad about half throttle it feels like its slipping i dont know if the motor is to small or the shaft isnt long enough
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: slipping

The cavition plate on the engine should be about level with the bottom of the boat if the engine is the right length shaft
 
R

rooster1

Seaman
Joined
Jun 14, 2007
Messages
54
Re: slipping

the plate is almost even with the bottom of boat could it be the boat is to big it almost seems like spinning tires on your car also the cavitation plate has a round plate on the bottom of it and half of it is broke off would that have any affect?
 
L

Laddies

Banned
Joined
Sep 10, 2004
Messages
12,218
Re: slipping

No and no is the engine cocked out a bit to far or is there a obstrution in front of prop on the bottom of the boat
 
kenmyfam

kenmyfam

Supreme Mariner
Joined
Aug 10, 2006
Messages
14,385
Re: slipping

Would the 16ft boat be fiberglass and heavy ??? Could be trying to do way too much with too little.
 
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