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Old 08-12-2014, 14:16   #46
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Re: Fitting a Prop

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Originally Posted by fstbttms View Post
Unnecessary, IMHO. Prop nuts do not fail except from corrosion.



Beating on the prop itself is going to certainly damage it. The proper (and only) tool that should be applied to a prop to remove it is a prop puller.
Thank you for all your helpful advice, fsstbttms!
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Old 08-12-2014, 14:47   #47
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Re: Fitting a Prop

Agreed, but it is common to apply an "impact adjustment" to the center of the puller itself to get the prop, flywheel, pulley or whatever to pop off.
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Old 08-12-2014, 15:01   #48
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Re: Fitting a Prop

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Thank you for all your helpful advice, fsstbttms!
I second this one - Thanks for your excellent advice on this and many other issues!
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Old 08-12-2014, 15:03   #49
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Re: Fitting a Prop

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Originally Posted by fstbttms View Post
.................. Beating on the prop itself is going to certainly damage it. The proper (and only) tool that should be applied to a prop to remove it is a prop puller.
And possibly the transmission as well.
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Old 08-12-2014, 15:18   #50
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Re: Fitting a Prop

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Originally Posted by a64pilot View Post
Agreed, but it is common to apply an "impact adjustment" to the center of the puller itself to get the prop, flywheel, pulley or whatever to pop off.
Very true, but that is not the same as hammering directly on the prop, as was suggested.
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Old 08-12-2014, 15:20   #51
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Re: Fitting a Prop

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Originally Posted by Exile View Post
Thank you for all your helpful advice, fsstbttms!
Quote:
Originally Posted by Sun and Moon View Post
I second this one - Thanks for your excellent advice on this and many other issues!
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Old 09-12-2014, 00:41   #52
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Re: Fitting a Prop

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Originally Posted by fstbttms View Post
...Beating on the prop itself is going to certainly damage it. The proper (and only) tool that should be applied to a prop to remove it is a prop puller.
This should be a sticky.
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Old 09-12-2014, 04:56   #53
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Re: Fitting a Prop

If you want some good advise try Lap Fitting A Propeller To A Shaft Photo Gallery by Compass Marine How To at pbase.com

I have found most of Mainsail's advice to be sound. Buy or make a proper prop puller. Nothing else will work on a well set prop. I made one and removed our prop which had been in place at least 20+ years, 15 of which was in the elements on the hard. (No, I don't want to talk about it!) I tried several ways to remove it and it wouldn't budge, but the tightened puller and a 1 second burst of an impact stamp gun and it slipped right off. Remember to disconnect the shaft from the transmission if you use impact anything as a good precaution.

Engine / Power Train | Sailing Vessel Vigah towards bottom of page.
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Old 09-12-2014, 09:21   #54
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Re: Fitting a Prop

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Originally Posted by bletso View Post
If you want some good advise try Lap Fitting A Propeller To A Shaft Photo Gallery by Compass Marine How To at pbase.com

I have found most of Mainsail's advice to be sound. Buy or make a proper prop puller. Nothing else will work on a well set prop. I made one and removed our prop which had been in place at least 20+ years, 15 of which was in the elements on the hard. (No, I don't want to talk about it!) I tried several ways to remove it and it wouldn't budge, but the tightened puller and a 1 second burst of an impact stamp gun and it slipped right off. Remember to disconnect the shaft from the transmission if you use impact anything as a good precaution.

Engine / Power Train | Sailing Vessel Vigah towards bottom of page.
That was another great "how-to" by MaineSail. It looks like I'll be reinstalling my prop out of the water after all since I also need to service the seacocks. What seems noteworthy is that MS recommends lapping if the prop or shaft are new, or if you don't know if it's ever been done. But he also cautions not to overdo it. He also says to use the big nut for the initial seating of the prop onto the shaft, but then to install the small nut first and then the big nut to lock it as fstbttms has already pointed out. May not matter much, but maybe the bigger nut provides more initial leverage to get the prop properly seated.

Anyway, thanks for the link.
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Old 09-12-2014, 09:31   #55
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Re: Fitting a Prop

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Originally Posted by fstbttms View Post
Beating on the prop itself is going to certainly damage it. The proper (and only) tool that should be applied to a prop to remove it is a prop puller.
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Old 09-12-2014, 14:51   #56
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Re: Fitting a Prop

You want to use the big nut to seat the prop as the big nut has many more threads, it can take a lot more torque before it distorts or strips.
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