1973 225 omc stringer outdrive feels like its slipping at high rpm ???

[mx711rcer]

ok so i was out last week an was going at a good speed an the pin in the prop snapped.. when its snapped it was almost full throttle an it whinned out for a good 10 seconds till i grabbed throttle back.. i put in new pin an whent back out but ever since then it feels like a clutch slipping at high rpm.. its fine going slow.. anyone know what may be wrong?? im new to boating so all the help would be appreciated.. thanks,tim

 

[Daviet]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

You might check and see if you spun a prop hub.

 

[mx711rcer]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

how is that done??? im new to all this... thanks,tim

 

[Schroeder2565]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

The hub bushing is a rubber bushing that is pressed inside your prop between
The prop and the splined hub that fits the shaft of the lower outdrive.
It's purpose is to releive some of the stress of vibrations from the prop from
Being transferred to your outdrive shaft.
When they age they get brittle and it allows the prop hub to spin and slip between it and the prop. It usually shows up at high speeds first and will progressively get worse.
You can have a new bushing pressed in , but it will have to be done by a prop shop.
Most boat repair shops just ship them off to have a prop shop do them.
Maybe cost $100 give or take

 

[GMC2003]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

Have you checked the fluid in the lower unit. It requires OMC type C fluid. If you use anything else it will slip.

 

[superbenk]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

how is that done??? im new to all this... thanks,tim

Take a paint marker or silver Sharpie or something & make a mark across the prop shaft end & the body of the prop itself (outside the hub) so they line up. Go take the boat out on the water & drive it so you feel the slipping you described. Pull the boat out & see if the marks still line up or if they shifted positions relative to each other. If they moved, the prop hub has slipped & will need to be repaired or the prop replaced. If they still line up, the problem is somewhere else.

 

[Howard Sterndrive]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

get a spare prop and put it on.
I can't believe the number of people who boat without a spare prop. It's like having a spare tire for your car.

 

[mx711rcer]

Re: 1973 225 omc stringer outdrive feels like its slipping at high rpm ???

i have spare prop an it aint that....