Does anyone want a 26M daggerboard mould?

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mike.clarke
Hi Jon,

Hi Jon,

Sorry I misunderstood your original post. If someone wants to use the mould to make more boards I'm sure they are welcome to borrow it from whoever is storing it. I don't know how the cost would work out as its a slow production process. Although it only takes a couple of hour at a time for each stage, most of the time is waiting for the resin to cure ready to do the next stage. So I'm not sure how someone would charge it at a commercial rate. I guess there is about 16 - 20 hours of work total for each board with prep and finishing but not sure how this would work out at commercial rates. If someone can be found to do the work I guess it could be more cost effective to make say 5 boards but not sure who would do it or what they would want to charge per board - but if the demand is there .....

I agree that owners should either have a spare or at least have access to one if they get damaged as its quite easy to damage them beyond repair. Once the central internal stiffener is damaged they can't be repaired. Even quite minor damage is difficult to repair properly with them being a hollow floodable part as they are deigned to break before they do damage to the structural part of the boat they are in.

I still haven't worked out how the rudders are built as although they appear to be a similar hollow flooded design to the dagger board the smaller thickness makes them more difficult to mould and then bond the two parts together. I guess someone will have to cut one open to find out at some point. That's how I managed to reverse engineer the dagger board to make sure it was the same as the original. Making an external shaped mould is the easy bit, and in principle the construction is the same as for the dagger board (full details of which are now downloadable from this web site) the difficult bit is working out how to make the edges bond properly in such a shallow part without introducing distortion - no one wants a bent rudder. It turned out to not be a problem for the thicker section dagger board. I now have two new ones.

Mike - Tarka 26M

john.richardson
I have read the 'M'

I have read the 'M' daggerboard contributions with interest - I had to buy one from the US in June 2016. The process worked out ok although it did take some time to receive as UK customs saw the word 'dagger' on the us paperwork and promptly shunted it into a security lock-up in Felixtowe, pending investigation! It then sat in its cupboard for a week as it could not be found! If anyone is proposing to buy one from the US, my advice is to get Blue Water Yachts to describe it as a keel on all paperwork!

For interest the costs were as follows: Basic cost of keel: $550.00, US internal transport: $55.00, Air freight to UK, inc delivery to my home: $210.00 - US total $815.00 @ 1.37 = £595.80. UK costs were VAT and import duty: £120.51, so a grand total of £716.31. Exchange rates are now somewhat less favourable now, so it would be a bit more expensive.

Pending confirmation of the actual cost of another from the mould, I would put my name down for one.

Has anyone got a mould for 'M' rudders? While I'm on, I think I need a new prop for my Yamaha 50, has anyone got any advice about the best one to get?

Regards to all, John Richardson 'Sonny' 26M

simon.armitage
Hi, John,

Hi, John,

I have an unused M rudder which you can borrow to make a mould but as Mike said, you need to cut it open to see the core and I am sorry but I can't let you cut mine open.

I am ashore now for the winter (early bird) so I won't ,hopefully, have need of it for 4 months or so.

Sorry, but am no expert on props.

Simon Armitage

Sowenna 26M

mike.clarke
Hi John,

Hi John,

We had to replace our prop this year when someone ran into it in the marina and bent a blade.

The standard prop for a Yamaha 50 high thrust fitted as original equipment on a Mac 26M is a - 13 5/8" x 13" K - which if you buy from the agent it will cost you £170.42 plus carriage but if you buy it from ebay at ssimarineoutboards it appears to be exactly the same prop and casting but costs £85 incl carriage. I can't tell the difference when the old and new are side by side ( -except for the blade not being bent on the new one).

Rather unhelpfully on ours Yamaha put the detail of the size and pitch on the side of the casting facing the motor gearbox so you can't see it until you remove the prop. To replace it you will need some proper marine water proof grease for the splines ( a tube of Yamaha Lical grease can be had from ebay for about £10) but apart from that its easy to remove and replace but you may need to replace the locking split pin with a new one. The other bits seemed to clean up easily with a stiff brush or a bronze wire brush. I replaced ours on the berth from a tender with the engine tilted up without any real problem, although part of the hub did need a little gentle persuasion with a soft faced hammer to part company with the old propeller once removed.

Hope this helps

Mike - Tarka 26M

keith.barton
Hi all,

Hi all,

ive just bought 2 x 500 gram tubs of 'REOLIT AQUA 2' water resistant grease at £9.48 each post free from: opieoils.co.uk , supposedly the bees knees in waterproof grease from eBay. It says on the pot:

Meets DEF STAN 91-34/1, MOD XG 286 AND NATO G-460 Specification for water resistant grease. Fuchs lubricants (UK) PLC.

Sounds good but probably no better than any other waterproof grease.

mike.clarke
Reolite Aqua 2 grease is a

Reolite Aqua 2 grease is a perfectly good calcium soap grease and is as it claims waterproof but the Yamaha grease is marginally better and will protect a bit longer for high pressure metal to metal surfaces such as the splines on the drive shaft with better protection in salt water as its a mixed calcium with lithium soap based grease which is why its a bit more expensive. Its also the grease originally specified by Yamaha (PS I'm a chemist that used to develop and design lubricants).

There are a number of calcium based waterproof grease that meet the same specification as the Reolite and can be used in salt water. The best greases significantly exceed the minimum specifications - the DEF standard and the NATO specs are essentially different organisations designation for the same performance specification and were actually for static protection rather than fast moving parts which is why the lithium is included for high pressure protection on fast moving parts.

Mike - Tarka 26M

keith.barton
Hi Mike,

Hi Mike,

Thanks for info, will definitely be changing to Yamaha grease. Is it just sold as Yamaha Waterproof grease or are any more details available/needed. We should collect our boat on Wednesday so looking forward to pumping grease where ever its needed!!

Keith.

mike.clarke
Hi Keith

Hi Keith

The Yamaha marine grease I was referring to is available in 225g tubes for about £10 and is called 'Yamalube LiCAL grease', not to be confused with the Yamaha general purpose marine grease which is similar to the Reolite. I would use this on the engine but the Reolite grease you mentioned is great for use on the trailer parts which never see high load pressures or fast rotating metal to metal surfaces like the prop shaft splines. One tube seems to last years in normal motor maintenance.

Mike - Tarka 26M

roly.simpson
What about trailer bearings

What about trailer bearings Mike. What do you recommend for them?

Roly

mike.clarke
Hi Roly,

Hi Roly,

The trailer bearings don't see what are considered high loads or high speeds when submerged so I would recommend any marine waterproof grease formulated for use in salt water. These are usually calcium based general purpose waterproof greases formulated for water immersion such as the Yamaha general purpose marine grease or the Reolite aqua 2 mentioned. They are sometimes referred to as marine white greases. Just check they are rated for salt water immersion on the spec as it is the anti corrosion properties as well as the ability to lubricate in a wet environment that's important. The same grease is often used for packing stern glands on inboard motors.

Mike - Tarka 26M

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