Ultrasonic anti-fouling

[ytd]

they were selling the hanging copper anodes kit at this year's sydney boat show. From what I could get out of the salesman, the copper anodes are consumed but it takes a couple of years. Not sure where the cathode goes. He said that the field created between the electrodes was just as important as the copper ions flowing between them. None of the documentation was detailed. Maybe the polarity reverses so the electrodes become anode and cathode alternately. The system was quite expensive, targeted at big mobos because of its ability to protect props. Anodes also expensive. A special kind of copper only available from them.

 

[Quidi Vidi]

Thanks for letting us all know about this product, i too have now ordered one and i'm looking forward to building it during the winter. I love tinkering with my boat as my previous posts testify, i love problem solving and get great pleasure from coming up with solutions. Its thanks to people like you that the rest of us are kept infomed of new products that may or may not work and of course it gives all the negative people something to moan about so everyones a winner. I'll let you all know how i get on

 

[Norman_E]

I have just ordered two kits, will report progress.

 

[rogerthebodger]

Wow all the interest just wish I could get some commission on the sales.

 

[MonniotC]

Thanks for the shout.Have just ordered 2 for a try.
2 @£69.75 each ( 44' boat ) ! ( plus del and insurance ) £164.50 in total
Will report back soon!
Phil

Where did you get them for £69.75 each? The one on the jaycar website is 249 AUD, which at the current exchange rate is £156. Am I looking in the wrong place?

 

[trapezeartist]

Lots of enthusiasm for this diy ultrasonic, in stark contrast to previous posts about ultrasonic which were only discussing professionally made systems. I can only conclude that the real objection to ultrasonic is the price.

 

[Quidi Vidi]

Where did you get them for £69.75 each? The one on the jaycar website is 249 AUD, which at the current exchange rate is £156. Am I looking in the wrong place?

http://www.jaycarelectronics.co.uk/productView.asp?ID=KC5498&SPECIAL=NEW&form=SPECIAL

Try using this link

Delivery is an extra £10...........Bargain!

 

[MonniotC]

Thanks Bower15 - I've ordered one too. One hell of a difference in price between the oz price and the UK price!

 

[Silent Lady]

Thank You

Thanks Bower15 .. Ordered two .. Be interesting to see if it works . The CopperCoat keeps the barnicals off but I am hoping the ultrasonics will keep the weed off and stop the little b***ards sticking to my new prop ..

Always thought it was an interesting concept but at over a £1000 for an installation it was not worth the risk ..

 

[Quidi Vidi]

Guys, dont thank me, thank rogershaw who started the thread and found the items in the 1st place. I got the £69 link from bitmans post on this thread and just repeated it. I have no electronics experience so i'm looking forward to building this and will have a huge grin if it works, nothing ventured etc.

 

[Silent Lady]

In that case

Thanks to everyone . For the Thought . The Digging . The Best Price . Suppose we should have all got together and got a DEAL .. Someone is going to wonder why they are suddenly shipping lots of kits to a small island ..

 

[ytd]

spare a thought for us locals who have to pay A$249. No idea why jaycar are subsiding sales to the UK.

 

[rogerthebodger]

If any one is interested you can buy the article online and then source the components local to you.

 

[mattnj]

Does this require a skin fitting below the waterline?

 

[bendyone]

I hope this works for you, but I think it might not work as well as a more expensive system. I have been working with a manufacture of a "commercial" system who have done a lot of research in the type of US transducers. Their findings are that potted transducer are not a effective due to air bubbles in the potting compound. Also the power output needs to be high. My transducers are titanium faced which is the best for transmitting the US waves. In fact the output can be measured upto 50m from the boat. The US will kill weed attached to the hull but not anything that is free floating ie a fender with the bottom in the water grew weed.
All I can say 100% is that the system I have works for me in Calais

 

[bendyone]

Does this require a skin fitting below the waterline?

No just needs to be bonded to the inside, mine are a tube filled with caster oil.

 

[noelex]

I hope this works for you, but I think it might not work as well as a more expensive system. I have been working with a manufacture of a "commercial" system who have done a lot of research in the type of US transducers. Their findings are that potted transducer are not a effective due to air bubbles in the potting compound. Also the power output needs to be high. My transducers are titanium faced which is the best for transmitting the US waves. In fact the output can be measured upto 50m from the boat. The US will kill weed attached to the hull but not anything that is free floating ie a fender with the bottom in the water grew weed.
All I can say 100% is that the system I have works for me in Calais

Its nice to hear from someone with some technical knowledge, particularly in a new field like ultrasonics.
However I am not sure what you mean by "potted". The method of attachment of the transducers in this DIY system appears to be the same as the 2 popular commercial systems on the market.

How are the titanium transducers in your system attached to hull? What’s the alternative to “potted”?

 

[snooks]

Its nice to hear from someone with some technical knowledge, particularly in a new field like ultrasonics.
However I am not sure what you mean by "potted". The method of attachment of the transducers in this DIY system appears to be the same as the 2 popular commercial systems on the market.

How are the titanium transducers in your system attached to hull? What’s the alternative to “potted”?

My system has a threaded ring epoxied to the inside of the hull, the surface of the transducer was then smeared with liberal amounts of petroleum jelly, and the ring is checked for tightness monthly. You need to have a bond with the hull that doesn't contain air bubbles. The results of Yachting Monthly's test will be coming out mid December

 

[noelex]

My system has a threaded ring epoxied to the inside of the hull, the surface of the transducer was then smeared with liberal amounts of petroleum jelly, and the ring is checked for tightness monthly. You need to have a bond with the hull that doesn't contain air bubbles. The results of Yachting Monthly's test will be coming out mid December

Thanks Snooks, but this seems to be the same system as proposed by the DIY alternative. There obviously needs to be an air free medium, using petroleum jelly or something similar, as a coupling to conduct the sound waves.
I am still confused how the DIY and commercial systems differ.

 

[bitman]

real or scam?

Hi, xxxxx



Thanks for your order however, the order JUK123456 is on hold because the item you’ve ordered KC5498 weights 2.02KG so the total shipping fee was

41.49GBP but you’ve already made payment for the shipping fee 10.GBP so you need to pay extra 31.49GBP for the shipping fee.



If you would like us to process the order through then please leave your credit card details on techstore@jaycar.com.au or myself mjung@jaycar.com.au or free call on 1800 022 888.



I am looking forward to hear from you soon.

Kind regards,

Mi Jung

Jaycar Mail-order | JAYCAR Electronics

- 320 Victoria Road Rydalmere NSW 2116 Australia

* mjung@jaycar.com.au



Techstore, Web & Mail Orders:

FREE CALL ORDERS 1800 022 888

( +612 8832 3110 | Ê +612 8832 3118

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