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461 Feathering Prop - Rope Cutter - Tip

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John Allison View Drop Down
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    Posted: 29 November 2005 at 07:57

I've just been advised it's not recommended to try and fix a rope cutter to our 461 saildrive leg as we have the standard feathering 3 blade prop.  Apparently inserting the cutter is moving the prop too far aft - and one can risk damaging the splines.

Not an issue for me and I'm greatful to Hanse UK for the honest practical advice.

As I did not know this when I ordered my boat, I think it is worth passing onward now.  If any new buyer is still specifying and also think they may add a cutter at some future stage - they may wish to discuss possible alternates to the standard specified prop........

Cheers

JOHN



Edited by John Allison - 29 November 2005 at 08:00
No longer a Hanse owner - but loved the one we had!
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John Allison View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Allison Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2006 at 13:57

Further to the above - I gave some though on how easy I'd find it to dive and to clear a fouled prop on our 461 with just a snorkel.

'Hard' sprung into my brain.  I've also had two occasssions this past summer when I dived to check my anchor but found I did not have enough bottom time when reliant only on my lungs.

So having wached James Bond I decided to research what small and hopefully lower cost diving devices might be around that would enable me to stay under but at shallow depth, to work and breath OK, and also did not take up too much space.  I hope those with any similar needs finds this interesting.

It was not hard to locate an product named 'Spare Air'.  It's an aluminium small tank with an attached regulator / mouthpiece and it's proposed purpose is as a reserve device for regular scuba divers.  Sadly as it only holds 2 cu foot of air which could be a few as 30 breaths if you are breathing heavy, it is not only canned by the dive gear critics but also not really adequate to my needs.

I then found a next best alternative was to find smallest 'pony tank' which holds 6 cu foot of air and add a regulator to it.  But sadly costs in the UK for a good aluminium tank and regulator appeared to reach  £300 + VAT.

So using trusty ebay I found same from a USA dive supply company (who choose to market alo via ebay) and a bid of just over US$200 won me the auction.  Even with $35 carriage to the UK this is much cheaper for me. 

Have not yet had it delivered let alone used it, but will report back once I've done so.

Cheers

JOHN



Edited by John Allison - 16 January 2006 at 10:41
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Tikatam View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Tikatam Quote  Post ReplyReply Direct Link To This Post Posted: 15 January 2006 at 21:10

John,

Having caught 60ft of netting around my prop in thick fog, mid Channel on the way home from Cherbourg in June, clearing props is close to my heart! Our 300 is of course much smaller than your 461, but the prop is still a long way under the boat especially with all sorts of material floating around. One tip I learned from watching the diver in Yarmouth sort us out was that he tied all of the loose ends up to the boat as tight as he could. This meant that the lines stayed taught when he was cutting them, which in turn meant that he could see exactly where the problem was and minimise the time he spent under water - he did this with out the use of any air tank, but I dont think I could have done the same even in the flat calm waters of Yarmouth harbour!

Having informed the Coastguard that we were stuck 25 miles south of Needles Fairway, (in the westbound shipping lane)they decided to send the cavalry - Freshwater Lifeboat was alongside us exactly an hour after the first contact with Solent Coastguard. That is faster than you could get an AA van to a single lady driver on the motorway!

Suitably heafty donations were subsequently made together with a determination not to have to call upon their services again, so rope cutter fitted and an avid interest in exactly the type of product you have been searching for.

Freshwater lifeboat is, like Hamble and the Venturers boat at Lepe an independant operation - they are well worth supporting in addition to the normal RNLI memberships etc in my opinion. They are certainly on my Christmas list from now on!!

 

regards

Graham

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John Allison View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Allison Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2006 at 15:43

Hi Graham,

Been there.  I've free dived to cut loose nets before when in Oz but it's never an issue when it's sunny and the seas flat!  Can symapathise with your trip described above and pleased to hear you made it back eventually.

The pony tank we ordered was from Diver West in the states.  Suspect they'll have a site somewhere to view the item if you do have more interest.  As stated - I'll update all once I've got it and used it.

Cheers

JOHN

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JofB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JofB Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2006 at 23:13

This probably sounds oversimple but could you not use a length of hose to breath through, making sure, of course, that someone else on board was in charge of it at the other end?  You don't need to dive very deep and I am sure a system can be arranged to help hold the hose in place. 

I wouldn't choose to use such a system frequently or for long but as a simple short term solution to the immediate problem it should allow you to stay under for a short while - effectively it would be no more than an overgrown snorkel tube.

Jof
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JofB View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JofB Quote  Post ReplyReply Direct Link To This Post Posted: 16 January 2006 at 23:15
Meant to add a PS to say that I had my first look on board a 461 at Excel - VERY impressed and a lovely boat, although my wife was not amused at my enthusiasm as our new 400 was inside!
Jof
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digme View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote digme Quote  Post ReplyReply Direct Link To This Post Posted: 17 January 2006 at 00:18

Originally posted by JofB JofB wrote:

I wouldn't choose to use such a system frequently or for long but as a simple short term solution to the immediate problem it should allow you to stay under for a short while - effectively it would be no more than an overgrown snorkel tube.

Unfortunately, an overgrown snorkel tube is a death trap. Please, don't invent diving equipment or use equipment that isn't properly designed and tested.

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Alain & Anne View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Alain & Anne Quote  Post ReplyReply Direct Link To This Post Posted: 17 January 2006 at 09:52
Rope cutter and 461 saildrive

As anyone can see on the attached pic (hope the upload works!) there is no room on the shaft to fit a rope cutter on a Yanmar Sail drive equipped with a 18x13 Flex o fold propeller on this Hanse 461. This is the option X308 on the price list!
When thinking about the option to order, the question of the engine-prop system came at first. Having experienced a Max Prop on my present boat, I thought that could be a solution to have it fitted by the yard or after which is not a difficult job to do. The point is that you could not fit a Yanmar saildrive with a feathering or folding prop with a diameter of more than 18 inches and approves by Yanmar. Otherwise you loose the guaranty.
As you can read on the Yanmar technical bulletin only two folding prop are approved: the Flex O Fold and the Varifold with a diameter of  18 inches max.
Conclusion: no rope cutter with the approved Flex O Fold 18x13 propeller and a question regarding the capability of a 18x13 folding prop to cope with the 75 hp of the Yanmar 4JH3-TCE?
Discussion with props provider including "approved ones" show that this issue is not to be sorted out in the short term.
The pics was taken in Les Sables and the boat is the Hanse 461 of the 2005 Paris Boat Show, I hope we wil sail it next month!!

Alain




2006-01-17_095200_YanmarTechnicalBulletinPropellerselectionS D50.pdf
UHAMBO 430e#004
White hull-teck deck-Yanmar 55hp-long range cruising
OCC

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John Allison View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote John Allison Quote  Post ReplyReply Direct Link To This Post Posted: 17 January 2006 at 16:39

Hi Alain & Anne,

Yes agree it is a shame the Yanmar will not provide warrantly if one wished to go for a Max Prop as I think they are better than the Flex O Fold also.  Here are shots of our Flex O fold open and closed to compare with your folding two blader....

  

We've now had both (Max on last Grand Soleil yacht and Flex on 461) and the Maxi Prop seemed better to us.  Specifically its ability to stop the boat quickly.  To be fair we've never had an issue of drag with the Flex which we did experience sometimes with the Max, but the Flex need a real burst of power to engage in reverse and begin working to stop you.

Hear what you say about not wishing to risk Yanmar warranty by going with a non recommended prop - but you should be aware our experience in Spain and UK is the Yanmar agent warrantly is sadly worth very very little.

We've so far had two engine related issues, and in both cases the agents have ducked for cover the moment the 'warranty' word is used in our first yuear.  Guess what?  Offer hard cash each time they reappear happy to do the work.  How bad is that?

Hanse UK each time has always done the right thing by me and I love the boat, but if I were specifying a 461 today and knowing what I've experienced with Yanmar warranty, I'd have insisted they fitted a Max Prop. 

No issues for me in loosing warrantly that I've found does not exist anyway!  You'll possibly not find my warranty experiences with Yanmar agents replicated in France - and I hope by repeating them here you'll be aware enough to avoid any problems that may arise.

Regards

JOHN

 



Edited by John Allison - 17 January 2006 at 17:05
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Alain & Anne View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Alain & Anne Quote  Post ReplyReply Direct Link To This Post Posted: 17 January 2006 at 17:51
Hi John

The Prop on the pic is a three blades FOF 18x13 fitted by Hanse on a 75 hp Yanmar engine. I think that's the same you have on Swagman!
I agree with you about warranty and I think I will ask for the standard fixed blades prop when (if!!!) I buy the boat, and then fit the prop of my  choice.
But the issue of the rope cutter still remain!!

Regards

Alain
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OCC

Our blog: www.uhambo.fr

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