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08-12-2014, 13:16
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#46
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Registered User
Join Date: Sep 2010
Location: Land of Disenchantment
Boat: Bristol 47.7
Posts: 5,607
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Re: Fitting a Prop
Quote:
Originally Posted by fstbttms
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.
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Thank you for all your helpful advice, fsstbttms!
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08-12-2014, 13:47
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#47
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Moderator Emeritus
Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
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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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08-12-2014, 14:01
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#48
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Registered User
Join Date: Nov 2009
Location: Florida Atlantic coast
Boat: Bristol 29
Posts: 353
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Re: Fitting a Prop
Quote:
Originally Posted by Exile
Thank you for all your helpful advice, fsstbttms!
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I second this one - Thanks for your excellent advice on this and many other issues!
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08-12-2014, 14:03
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#49
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Registered User
Join Date: Feb 2008
Location: North Charleston, SC
Boat: Camano Troll
Posts: 5,176
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Re: Fitting a Prop
Quote:
Originally Posted by fstbttms
.................. 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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And possibly the transmission as well.
__________________
Ron
HIGH COTTON
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08-12-2014, 14:18
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#50
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Hull Diver
Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 5,428
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Re: Fitting a Prop
Quote:
Originally Posted by a64pilot
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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Very true, but that is not the same as hammering directly on the prop, as was suggested.
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08-12-2014, 14:20
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#51
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Hull Diver
Join Date: Oct 2006
Location: Under a boat, in a marina, in the San Francisco Bay
Posts: 5,428
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Re: Fitting a Prop
Quote:
Originally Posted by Exile
Thank you for all your helpful advice, fsstbttms!
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Quote:
Originally Posted by Sun and Moon
I second this one - Thanks for your excellent advice on this and many other issues!
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08-12-2014, 23:41
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#52
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Registered User
Join Date: Apr 2007
Location: Marina del Rey, California
Boat: President 43 Sportfish
Posts: 4,105
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Re: Fitting a Prop
Quote:
Originally Posted by fstbttms
...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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This should be a sticky.
__________________
1st rule of yachting: When a collision is unavoidable, aim for something cheap.
"whatever spare parts you bring, you'll never need"--goboatingnow
"Id rather drown than have computers take over my life."--d design
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09-12-2014, 03:56
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#53
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Registered User
Join Date: Nov 2013
Location: Louisville, KY
Boat: Globe, cutter/ketch,38
Posts: 724
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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.
__________________
www.sailboatvigah.com Boats don't like being neglected, but then neither do significant others!
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09-12-2014, 08:21
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#54
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Registered User
Join Date: Sep 2010
Location: Land of Disenchantment
Boat: Bristol 47.7
Posts: 5,607
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Re: Fitting a Prop
Quote:
Originally Posted by bletso
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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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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09-12-2014, 08:31
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#55
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Registered User
Join Date: Aug 2006
Location: Skagit City, WA
Posts: 25,483
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Re: Fitting a Prop
Quote:
Originally Posted by fstbttms
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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__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard
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09-12-2014, 13:51
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#56
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Moderator Emeritus
Join Date: Oct 2013
Location: Jacksonville/ out cruising
Boat: Island Packet 38
Posts: 31,351
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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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