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Old 23 July 2014, 18:03   #1
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Propeller fell off!

Hi all
On holiday up in the highlands and went astern with mucho mucho gusto to avoid hitting a buoy and no drive as the prop went for its own holiday. Thanks to my mate on his sib he rescued me and the prop.
The prop had come off over the nut and pin sliding off its rubber cush centre with no damage to prop or shaft.
The issue I have is that the brass lock thrust washer was not fitted as with it on the castle nut will not go onto the shaft enough to allow the split pin to be fitted by a country mile. The rubber Cush is fully in the centre of the prop. I have only recently put it on and been lucky that I have lost it next to the beach.

Photos below shows what was left
Click image for larger version

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Photo below shows with everything fitted and the nut is just on


Click image for larger version

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If I take off the stainless washer forward of the prop then it would fit but need advice please

Cheers
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Old 23 July 2014, 18:15   #2
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Not the right hub for the engine?
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Old 23 July 2014, 19:04   #3
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^^ What he said.
Make & model of prop?
Where did you buy it from?
Was the prop sold as right for your engine?
What do you mean by brass thrust washer - is this intended to fit over the prop to stop it coming off?
What fitting instructions came with the prop?

(If its a Flo-torq prop this shows what needs to be present:
http://www.mercurymarine.com/media/m...s/Flo-Torq.pdf )
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Old 23 July 2014, 19:47   #4
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The hub was sold with the prop from steel developments for Honda bf115 engine.
It could be the wrong hub which would explain all the issues.
The brass coloured thrust washer is in the picture with the prop fitted.
It has fitted in order :-
stainless thrust washer
hub/prop
brass thrust washer
18mm nut washer
Castle nut

I will get the box it came in out of the bilge in the morning and see if that will help else old prop goes back on for rest of trip.
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Old 24 July 2014, 03:27   #5
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As you've got the old prop with you - wise move - compare the dimensions of the two.
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Old 24 July 2014, 04:19   #6
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Quote:
Originally Posted by macattack101 View Post
The hub was sold with the prop from steel developments for Honda bf115 engine.
I've had a couple of props and hubs from Steel Developments and they have always been spot on. Julie is really knowledgeable and helpful and I'm sure that she will advise appropriately if you give her a ring.
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Old 24 July 2014, 10:13   #7
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If you can't get the pin on, you don't need the spacer (what you call a brass thrust washer.)

Had a similar problem replacing a prop on my F115; but the other way round: the new prop needed about 3/8" of space taken up, so had to buy a spacer to make up for that.

jky

Doesn't say anything about why yours failed though.
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Old 25 July 2014, 08:40   #8
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Found the problem, there were 2 forward thrust spacers fitted which took up all the shaft space. One removed and all greased up with the reverse thrust washer fitted and boat clocked 35knots racing across to isle of eigg in brilliant sunshine and flat seas. Happy days
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Old 25 July 2014, 12:32   #9
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It looks a cracking day out there today.

We are heading to The Old Forge in Inverie on Sunday for a bar meal.
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Old 25 July 2014, 14:02   #10
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Originally Posted by macattack101 View Post
Found the problem, there were 2 forward thrust spacers fitted which took up all the shaft space. One removed and all greased up with the reverse thrust washer fitted and boat clocked 35knots racing across to isle of eigg in brilliant sunshine and flat seas. Happy days
Hooray! Have fun
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