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  1. #11
    Join Date
    Nov 2005
    Location
    Sant Carles de la Rąpita
    Posts
    6,754

    Default Re: Panacea or Snake oil?

    Will it stay on - thats the first BIG question.
    I haven't yet found anything that actually sticks to the props.
    Usually it is OK for about 100 miles then it gradually comes off.
    There is a lot of power being dissipated from a prop driving a boat at full speed.

    For me, there are two problems to solve.
    1. - Make it stick
    2. - A coating that barnacles don't like to grow on.

    If this product solves those two problems, I'm up for it.
    That said though, I don't really want to be the guy who finds that it doesn't work.
    Getting this stuff off if it doesn't work can be a real problem.
    Usually, some of the coating remains in those "hard to get at" places.

  2. #12
    Join Date
    Apr 2005
    Location
    Looking out of the window
    Posts
    13,718

    Default Re: Panacea or Snake oil?

    Robert got the aquacote off without any moaning.

    Well enough he triluxed my gear last year (even though I didn’t ask him too
    Free supercharging Tesla referral code http://ts.la/jez9763

  3. #13
    Join Date
    May 2001
    Location
    Bucks & St Raphael SoF
    Posts
    1,304

    Default Re: Panacea or Snake oil?

    Quote Originally Posted by Hurricane View Post
    Will it stay on - thats the first BIG question.
    s.
    Agreed. I sent them an email asking what case studies they have, considering the only example on their site is a bloke with a jet wash. Also asked for the detailed application instructions and the process for re-coating the following season.

    TBH, I can't see that it will stick for very long

  4. #14
    Join Date
    Dec 2005
    Location
    Live London
    Posts
    3,298

    Default Re: Panacea or Snake oil?

    It is cheap enough to be worth a go unless it is really tricky to get on. Mark - do post the reply.

  5. #15
    Join Date
    Nov 2005
    Location
    Sant Carles de la Rąpita
    Posts
    6,754

    Default Re: Panacea or Snake oil?

    Quote Originally Posted by Whitelighter View Post
    Robert got the aquacote off without any moaning.

    Well enough he triluxed my gear last year (even though I didn’t ask him too
    Yea - but getting it off properly without scratching the bronze underneath.
    It is very difficult to get into all the little crevices.
    Remember, I polish mine.

  6. #16
    Join Date
    Jun 2011
    Location
    Volos-Athens
    Posts
    4,532

    Default Re: Panacea or Snake oil?

    fwiw,

    last year I abraded properly (Mike wont like that...) my props, shafts, tabs to 80grit
    applied 3-4-5 V. LIGHT coats of Velox primer by spraying it on (i.e. 80% goes to the surrounding env...)
    applied 4-5 V.LIGHT coats of Velox antifoul same way spraying it on from around 20cm on a day without any breeze.

    Result, still on and generally clean (wont dive in the marina to have a look now though, will take pics when boat is out in a couple of months)
    I was told by a local grp repair man that the problem with velox is thick layers which flake off, cannot go thinner than spraying, so that seems to work.

    Also tested some tab areas with another similarly foul smelling primer already in a spray can and much cheaper meant to be for priming galvanized steel before painting. Also looks like it's stuck fine so I'll use that this year and save some dosh on the velox primer


    V.

  7. #17
    Join Date
    Apr 2011
    Location
    Boat- SoF
    Posts
    4,623

    Default Re: Panacea or Snake oil?

    The will it last Q ?
    Each boats prop situation is different so a “ It works on mine “ does not necessarily mean it will work on yours .
    Revisiting the cavitation thread briefly there’s various degrees of heat and pressure along the blades , not necessarily constant , mostly variable depending ( not exhaustive list ) your prop speed , your AoA the way the boats trimmed , the boat speed .
    Anecdotally I have noticed the hub area of mines cleans off after a good run .Anything inc fouling spins off to shiny metal .
    Also being warm in the season and pretty high torque being sent through there’s only a minor drop of performance.ie I can still plane with fouled sterngear just takes a bit longer and knocks a few knots off for given rpm .
    But on a long run the performance gradually comes back as they self clean .

    So there’s no motivation from me for a “ panacea “

    Having said that I can and do snorkel/ dive etc to scape up the sterngear , so the fuel waste point is valid to a point but as Hurricanes implys 100 miles @ 1800 rpm they will be practically as smooth as a babies bottom , paint and fouling all washed off .
    Needs to last a whole season not just a few weeks at the start .

  8. #18
    Join Date
    May 2001
    Location
    Bucks & St Raphael SoF
    Posts
    1,304

    Default Re: Panacea or Snake oil?

    Here is the very lame (IMHO) reply from Prop Defender...

    "The detailed application instructions are enclosed with each kit and they are also available on the web www.propdefender.com
    In addition on home page under 'how long does it last' there is a link to a You Tube video showing the coating standing up to a 2000 psi industrial water jet.
    Your third question is difficult to answer. Theoretically you should not have to overcoat but should the coating be damaged then all that is needed is thoroughly clean the coating surface with the degreasing solution and apply a new top coat over the existing."


    If their only testing was done by a bloke in a pair of wellies with a jet wash, then I think I'd rather spend £50 on some wine!
    Last edited by markc; 07-03-19 at 15:39.

  9. #19
    Join Date
    Dec 2005
    Location
    Live London
    Posts
    3,298

    Default Re: Panacea or Snake oil?

    I appreciate the 2000 psi thing is not real life- but the reasons these things fail is they fall off - so maybe there is something in it?

    It is not dear and nothing else seems to work. Interesting the props can't be used for 4 days - 1 day to dry 3 days to cure.

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