Logo
FULL SITE MENU

Antique OMC Prop Question

T

Travis Wallace

New member
I have a 1960 Johnson 40. The prop is original. It's splineless w/shear pin. The motor overrevs and the boat slows when I give it a lot of throttle. My first thought was that the hub was spun, but...do these vintage props even have a rubber hub? If it's driven with a shear oin, why would it it need a rubber hub?

I removed and reinstalled the lower unit immediately prior to this symptom developing, so I'm concerned that I did something wrong and stripped the drive shaft or prop shaft. I'm new to mechanical work and I'm not sure how to proceed. Any thoughts/advice would be most appreciated!

Thank you!
 
It does have a rubber hub, and yes they do sometimes break loose and slip. The rubber absorbs the shock when you shift gears as well as touching bottom in skinny water.
 

Attachments

  • Prop Cutaway.jpg
    Prop Cutaway.jpg
    87.5 KB · Views: 5
Need a prop? They are costly to rehub. Just get me the size....I gotta clean up around here....there's WAY TOO MUCH TO AUCTION.
 
Back
Top