Spun Prop Hub?

[RubberFrog]

I think I spun the prop hub, but I am not sure how to visually inspect it. It is a flo-torque II hub on a 2006 Alpha 1 gen 2. The engine is a 5.0 mpi. The boat suddenly reved up while the boat slowed down. I was able to limp back to the dock doing 9.3 mph at 2500 rpm's. That rpm would usually have me going 20-25 mph.

I never over heated, there was no rubber smell and I see no rubber dust/chunks in the bilge. The prop has no damage. The engine was purring like a kitten the whole time. All fluids are full.

I tried turning the prop by hand in both forward and reverse and it did not move. I pulled the flo-torque sleeve out and it looks ok. But, I don't really know what I am supposed to see (if anything) when looking at the hub.

Any ideas?

 

[Bondo]

Re: Spun Prop Hub?

Scribe a small line across the face of the Prop,+ Hub,.....
Run It,.........
Then see if it still Lines Up......

I'd Think that there'd be Visible Damage with that Torq-Flo System,........
But,.... Maybe Not......

 

[RubberFrog]

Re: Spun Prop Hub?

I'm going to take it out tomorrow and see if the marks I made are still aligned. I went ahead and bought a new hub sleeve just in case. I also changed my fuel/water filter just to make me feel better.

I had a boat load of people yesterday (including a baby and a toddler) and it wasn't a good time to be experimenting with the throttle or prop.

 

[Bondo]

Re: Spun Prop Hub?

I'd be interested in the Outcome,........

The Hubs like that, that I've seen,........
Seems to Me, should Look Bad in your hand.............

I just can't think of Where it could Slip........

 

[Coors]

Re: Spun Prop Hub?

I'm going to take it out tomorrow and see if the marks I made are still aligned. I went ahead and bought a new hub sleeve just in case. I also changed my fuel/water filter just to make me feel better.

I had a boat load of people yesterday (including a baby and a toddler) and it wasn't a good time to be experimenting with the throttle or prop.

Ouch, Captain- that sucked.

 

[RubberFrog]

Re: Spun Prop Hub?

There was nothing wrong with the hub. I think Bond-o is right, if there is something wrong with a flo-torque hub it will be obvious. The hub is basically a hard piece of plastic so it can't just "slip." Something has to seriously twist or crack.

Anyway, I marked my hub and prop and took it for a spin after changing the water separator. Boat ran great. The hub never moved. Mistery solved.

I assumed that if the filter was getting bad that the boat would run rough or at least idle poorly, but it purred like a kitten without ever missing a beat. It even revved right up nicely. I don't get it....