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Old 22-03-2009, 11:00 PM   #1
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Greasing hull?

Strange question for everyone....

What would the effect be of a very thin (the same kind of thickness as wax) layer of marine grease or similar on a boats hull, performance wise?

I know the yanks use lanolin quite a lot and claim it can increase speed, so i can't see it having a negative effect?

I'm not bothered about it increasing speed, just don't want it to decrease speed at all. The idea is just that it would give an antifouling effect at least for a period of time, I've noticed nothing ever grows on areas of white grease on outboards.

And yes, i know it's toxic etc etc, I'm just wondering!

Cheers, James
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Old 26-03-2009, 01:32 PM   #2
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I can picture the horrified look on the harbour masters face when he sees your boat surrounded by an oil slick and a few dead fish, seagulls and cormorants.

I've never heard of the grease stuff but I've got and old pot of antifouling 5L, Blakes I think that I never used you can have for £40 think I paid over £80 for it a few years ago. It 's black though.

And I think i mentioned this to you before, that if you can't lift the drive completely out the water that you could slip a bag onto it and shove some chemicals in to keep it sludge free, a bit like those floating paddling pools the americans drive their boats into.

I don't know what chemical they use but i bet you'd be happy filling it with greace
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Old 26-03-2009, 03:18 PM   #3
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Quote:
Originally Posted by larby View Post
Strange question for everyone....

What would the effect be of a very thin (the same kind of thickness as wax) layer of marine grease or similar on a boats hull, performance wise?

I know the yanks use lanolin quite a lot and claim it can increase speed, so i can't see it having a negative effect?

I'm not bothered about it increasing speed, just don't want it to decrease speed at all. The idea is just that it would give an antifouling effect at least for a period of time, I've noticed nothing ever grows on areas of white grease on outboards.

And yes, i know it's toxic etc etc, I'm just wondering!

Cheers, James
James
A friend of mine tried this product Safeboatskin some years ago on a 27 foot cruiser with good results, may be worth looking at it, haven't tried it my self.

http://www.ribcentre.net/shop.asp
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Old 26-03-2009, 03:26 PM   #4
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grease

[QUOTE=larby;152615]Strange question for everyone....

What would the effect be of a very thin (the same kind of thickness as wax) layer of marine grease or similar on a boats hull, performance wise?

I know the yanks use lanolin quite a lot and claim it can increase speed, so i can't see it having a negative effect?

I'm not bothered about it increasing speed, just don't want it to decrease speed at all. The idea is just that it would give an antifouling effect at least for a period of time, I've noticed nothing ever grows on areas of white grease on outboards.

And yes, i know it's toxic etc etc, I'm just wondering!

Use car wax and buff it up to a fine shine with a automotive lecky buffer,once you have done it,do it again,water wont stick,less friction,could put another 2 to 3 m.p.h. on your top end.negoiator and team williams do it in honda 225,guess who is always 1st.and 2nd.? Give mrs.plenty of spinach before lifting boat up,its a long job.
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Old 26-03-2009, 06:14 PM   #5
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Cheers for the replys guys! I didn't think anyone was gonna reply to this one!

lain, Thanks for the offer, there's no way i'm putting black antifoul on her though!! It would have to be white but i'm trying to think of a way of avoiding it. I'm going to be using your idea for the legs of the outboards for sure though.

dbe1, I've seen that stuff before, heard mixed reviews about it though. Any idea how long he got before having to lift and clean? my theory is that the other 'greases' i'm looking atare prob a bit more toxic, so may repel for longer!

Dowdy, A mate of mine does that, takes him forever and he has to re-do it every two weeks or so!! With the shape of the cat and the trailer it'd be a nightmare for me, i can just dry it out and tip it from side to side like e can with a mono. I'm looking for a bit of an easier option!

Cheers, James
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Old 26-03-2009, 11:41 PM   #6
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Buy a base box and fit in your boat, connect to shore power and just leave your favourite CD running.

Should act something like that ultrasonic stuff on the cheap, me thinks?

So instead of killing all surrounding fish with oh so toxic grease you'll be filling their lives with music.

You never know they might develop a taste to it and next time you go back to your boat might be greeted with some synchronised swimming routines

That would be cool.

Then net pairs of the little feckers and sell then to every fair-ground and aquarium in the world. Quids in me thinks.

Now that's a plan better than anything the A-team EVER came up with as it doesn't involve welding unnecessary bits of scaffolding to the front of a lorry.

And before anyone replies I know what's coming next...

SHUTUP FOOL!
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Old 27-03-2009, 08:38 AM   #7
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Old 27-03-2009, 09:29 AM   #8
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Cheers for the replys guys! I didn't think anyone was gonna reply to this one!

lain, Thanks for the offer, there's no way i'm putting black antifoul on her though!! It would have to be white but i'm trying to think of a way of avoiding it. I'm going to be using your idea for the legs of the outboards for sure though.

dbe1, I've seen that stuff before, heard mixed reviews about it though. Any idea how long he got before having to lift and clean? my theory is that the other 'greases' i'm looking atare prob a bit more toxic, so may repel for longer!

Dowdy, A mate of mine does that, takes him forever and he has to re-do it every two weeks or so!! With the shape of the cat and the trailer it'd be a nightmare for me, i can just dry it out and tip it from side to side like e can with a mono. I'm looking for a bit of an easier option!

Cheers, James
James

The guy used the boat every weekend and sometimes during the week even used it in the winter months, it only came out once a year and although it was lightly fouled a quick jet wash and it was clean.
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Old 27-03-2009, 07:07 PM   #9
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takes to long

Quote:
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James

The guy used the boat every weekend and sometimes during the week even used it in the winter months, it only came out once a year and although it was lightly fouled a quick jet wash and it was clean.
If you want to win gotta put the hours in,or just do the rear third,no underlings?Minimum wage jobbies?Engine hoist hire only 15 a day, your rear end up,propped,1 in waxing, 1 in polishing,job done in 2 hours.
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Old 27-03-2009, 08:22 PM   #10
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James

The guy used the boat every weekend and sometimes during the week even used it in the winter months, it only came out once a year and although it was lightly fouled a quick jet wash and it was clean.
Cool, so it was sat in the water when not in use? Sounds like this is the stuff for me!

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If you want to win gotta put the hours in,or just do the rear third,no underlings?Minimum wage jobbies?Engine hoist hire only 15 a day, your rear end up,propped,1 in waxing, 1 in polishing,job done in 2 hours.
This is true, but i'm only looking to win two races this year, don't mind shedding a few mph the rest of the time to get an easy life!
I've got an engine hoist and everything, and a guy who works for me, but i'm not about to start paying for it to be done!
I'll polish her for the races, but the rest of the time i just want an easy life, i've got enough on as it is! This speedcoat sounds like good stuff to me!

James
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Old 29-03-2009, 04:19 PM   #11
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Cool, so it was sat in the water when not in use? Sounds like this is the stuff for me!



This is true, but i'm only looking to win two races this year, don't mind shedding a few mph the rest of the time to get an easy life!
I've got an engine hoist and everything, and a guy who works for me, but i'm not about to start paying for it to be done!
I'll polish her for the races, but the rest of the time i just want an easy life, i've got enough on as it is! This speedcoat sounds like good stuff to me!

James

Speedcoat inconclusive on results see OSO
http://www.offshoreonly.com/forums/g...speedcoat.html
suited more to a heavy Vee IMHO
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Old 29-03-2009, 11:24 PM   #12
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Thanks for the link, TBH i'm really not looking to gain any top end, there's plenty of other things i could do to get that... I'm just looking to buy myself a couple more weeks between bottom scrubs and make my life easier. Boating with a baby!

Cheers, James
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Old 29-03-2009, 11:32 PM   #13
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Boating with a baby!

Cheers, James

here you go!

http://www.euphoriasailing.com/Water...fants/Crib.jpg
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Old 29-03-2009, 11:40 PM   #14
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Lol, wonder how it'd cope with a high speed impact!?
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Old 29-03-2009, 11:46 PM   #15
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Lol, wonder how it'd cope with a high speed impact!?
why you planning on hitting anything?
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Old 29-03-2009, 11:54 PM   #16
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Nope!! I was meaning with the water! Not planning that either though!!
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Old 05-04-2009, 04:22 PM   #17
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if speed is your objective (not anit-fouling), then the best bet is to ensure that your running surfaces are perfectly clean, straight and true; then sand with 400-600 grit paper.
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Old 05-04-2009, 05:59 PM   #18
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if speed is your objective (not anit-fouling), then the best bet is to ensure that your running surfaces are perfectly clean, straight and true; then sand with 400-600 grit paper.
Quote:
Originally Posted by larby View Post
Thanks for the link, TBH i'm really not looking to gain any top end, there's plenty of other things i could do to get that... I'm just looking to buy myself a couple more weeks between bottom scrubs and make my life easier. Boating with a baby!
Quote:
Originally Posted by larby View Post
I'm not bothered about it increasing speed, just don't want it to decrease speed at all. The idea is just that it would give an antifouling effect at least for a period of time
Quote:
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don't mind shedding a few mph the rest of the time to get an easy life!
As i've mentioned, a few times, it's antifouling i want. If it were speed then yes, i would blueprint the hull and sand, but i don't think a sanded bottom left in a warm marina for a season would do too well!!

James
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Old 05-04-2009, 09:05 PM   #19
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larby - sorry if i missed your initial desire. if you're not worried about gaining speed, then a strong anti-fouling paint is your best bet. Interlux makes a good one. you cannot expect to paint your bottoms and not lose some speed though.
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Old 06-04-2009, 08:00 AM   #20
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No worries - I've actually read loads of your posts on scream and fly whilst looking into this subject too. I know that antifoul is the easiest way, and that may be the way i go yet, but i was just wondering about coating with various other things. Mainly i was looking for answers referring to the handling created by 'greasing' the hull with silicone or similar.

Cheers, James
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