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Go Back   SailNet Community > General Interest > General Discussion (sailing related) > Replacing propellor in the water?
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Thread: Replacing propellor in the water? Reply to Thread
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Topic Review (Newest First)
07-09-2013 09:28 AM
Fstbttms
Re: Replacing propellor in the water?

Quote:
Originally Posted by SchockT View Post
What is the going rate for dive services?
Hull cleaning rates vary widely by region. Here it is typically $2.25/foot for sailboats, $3.00/foot for powerboats. Zinc replacement runs $10.00/zinc, plus the cost of the zinc. Hull cleaning needs to be done 6 times per year in the Bay Area.
07-09-2013 05:31 AM
SchockT
Re: Replacing propellor in the water?

I believe you! In your area there is a much bigger market for that kind of dive service. And if the diver is experienced and equipped with the right tools I am sure he can get a prop changed quickly enough for it to be cost effective. Frankly I would have thought that a $170 prop change would not be worth a pro diver's time. What is the going rate for dive services?

I have never hired a diver, but the guys I know that clean bottoms are sailors and recreational divers earning extra cash.
07-09-2013 02:59 AM
Fstbttms
Re: Replacing propellor in the water?

Quote:
Originally Posted by SchockT View Post
I don't even know anyone who has had such work done by a diver, but I guess it happens!
Yes it does. Every. Single. Day.

Quote:
Originally Posted by SchockT View Post
Most people I know use a tide grid or haul out for that kind of work.
Most places don't have tidal grids. And hauling out for prop work is inconvenient, time consuming, expensive and generally unnecessary.

Quote:
Originally Posted by SchockT View Post
The only kind of divers I see at the club are guys cleaning bottoms for extra cash.
There are approximately 130 dive services here in the San Francisco Bay Area alone. The one I own has allowed me to buy a house and put two kids through college. Don't assume that all hull cleaners are part-timers working for beer money.
07-09-2013 02:13 AM
Alex W
Re: Replacing propellor in the water?

I like my CS prop, but I'm not sure it's really a $500 improvement from the 2-blade Michigan Sailor that was on here. There is a bit less prop area (I measured them both when removed) so it's probably a bit more efficient when sailing and it's a little quieter from being 3 bladed instead of 2.

So, minor upgrades, but I probably should have kept thinking about it and considering if I'd rather have a feathering prop (lots more $$$).

I'd say use what you've got, and worry about the prop when you've got more sailing miles on the boat.
07-09-2013 02:11 AM
SchockT
Re: Replacing propellor in the water?

Quote:
Originally Posted by Fstbttms View Post
There is very little prop work that can't be done virtually 100% successfully while the boat is in the water. Prop R&Rs happen many times, every day, and the fact that the recreational boating community doesn't see a rash of (or any, really) problems arising from this practice is proof.
Quote:
I am sure that professional divers would disagree
See? I told ya!

I don't even know anyone who has had such work done by a diver, but I guess it happens! Most people I know use a tide grid or haul out for that kind of work. The only kind of divers I see at the club are guys cleaning bottoms for extra cash.
07-08-2013 10:37 PM
jimgo
Re: Replacing propellor in the water?

David, you're right, I could. But with any luck, the boat will be in the water before I get a chance to get there and pull the old prop.
07-08-2013 09:30 PM
davidpm
Re: Replacing propellor in the water?

Since the boat is out of the water now why can't he pull the prop clean it all up then put it right back on?

Now if he wants to remove it underwater he will know the exact tools he needs and it should come off easier the second time no??

I rented a puller of some kind from Napa that seemed to work with a little light tapping.
07-08-2013 08:05 PM
Fstbttms
Re: Replacing propellor in the water?

Quote:
Originally Posted by SchockT View Post
I am sure that professional divers would disagree...
There is very little prop work that can't be done virtually 100% successfully while the boat is in the water. Prop R&Rs happen many times, every day, and the fact that the recreational boating community doesn't see a rash of (or any, really) problems arising from this practice is proof.
07-08-2013 07:40 PM
SchockT
Re: Replacing propellor in the water?

When I pull my prop off I use a yoke and a bearing splitter:



You should never have to beat on the puller; perhaps a tap here and there, but you never want to hammer on your prop shaft unless you want to repair your transmission as well!

I can access my prop and still breathe through my snorkel, but I would never try to pull the prop that way. Zinc replacement and cleaning only. It is way too awkward, and too much risk of losing tools. Also, It is not uncommon to have to clean up the shaft, keyway and key before re-assembly. Doing that under water would be much less effective. The the temptation would be to rush the job and force it all back together, and THAT is a recipe for disaster.

I am sure that professional divers would disagree, but in my mind a prop change is something that should be done on the hard if at all possible.
07-08-2013 05:40 PM
smurphny
Re: Replacing propellor in the water?

Props that have been on a long time can be a real bear to get off. I wouldn't like to have to remove an electrolytically bonded prop underwater. Is your existing prop that bad that you can't wait? I would break it free before going in the water just to make sure it's not going to be a PITA. Inspect and clean the taper, free up the key while it's out so you know it's coming off easily when you're underwater. A real prop puller is designed for impact whereas a regular gear puller does not. The c-clamp idea is a really bad one. You can never accumulate too many tools.:-)
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