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Old 18-03-2008, 07:28   #121
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Originally Posted by GordMay View Post
"Margard" is a Silicone surface treatment, applied to Lexan.
I recall reading an independent engineering paper, that favourably reported on itís toughness (scratch-resistant) and anti-yellowing properties.
we are very happy with it , the only thing to watch carefully is the way it is installed , follow the instructions carefull and use the primer G and sealants from Bostik otherwise they do come loose.
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Old 18-03-2008, 07:32   #122
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\

Full speed can be obtained for a maximum of 3 hours giving us 9 knots plus.
What happens after 3 hours?
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Old 18-03-2008, 07:39   #123
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What happens after 3 hours?
with the 11 KW generator you go back to 7.2 knots because the battery,s are depleted to 40 % and the 7.2 hours can be maintained as long as there is diesel in the tank or in our case with a full tank of 700 liters 230 hours or a range on motors alone of 1656 NM , you are bound to find some wind even if it is only 6 knots to start sailing .
This picture has not taken into account that solar generation is taken place or maybe some wind generation , each hour of sunshine will generate an extra 2 KW

Greetings Gideon
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Old 18-03-2008, 08:35   #124
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with the 11 KW generator you go back to 7.2 knots because the battery,s are depleted to 40 % and the 7.2 hours (knots I assume) can be maintained as long as there is diesel in the tank
OK,

I get it.

Thanks.
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Old 18-03-2008, 08:38   #125
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The 40% depletion of the batteries is the switch over point and the batteries will not be used further for propulsion, that much is clear. But I thought with these high-tech lithium phosphate batteries you were able to go further in the depth of discharge.
I thought you even mentioned this as why there is such a weight reduction for a given Ah. Maybe I misunderstood?
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Old 18-03-2008, 08:44   #126
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The 40% depletion of the batteries is the switch over point and the batteries will not be used further for propulsion, that much is clear. But I thought with these high-tech lithium phosphate batteries you were able to go further in the depth of discharge.
I thought you even mentioned this as why there is such a weight reduction for a given Ah. Maybe I misunderstood?
No, you did not misunderstand but this is taken into account the standard
AGM gel batterys that cannot be depleted to 10 volts .( they can be not not to often because they will die)
If the optional Lithium Ion Phosphate batteries are used it will more than double the run time on batteries and will also double the time of full speed with the 11 kw generator
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Old 18-03-2008, 08:51   #127
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I wish every day that I had the money to buy a 435.

But then what would I eat.......??????
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Old 18-03-2008, 08:52   #128
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Forgive me if this has been answered but on the Fastcats are the green motion designed to retract into the hull or swing up and secure under the bridge deck?
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Old 18-03-2008, 08:53   #129
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I wish every day that I had the money to buy a 435.

But then what would I eat.......??????
Where are you at in Florida? I have a plan and 2 ski masks ......
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Old 18-03-2008, 09:02   #130
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I wish every day that I had the money to buy a 435.

But then what would I eat.......??????
In the souther Atlantic there is still lots of fish , I caught at least 200 kilo,s while en route from Cape Town to Miami and it tasted great.

Always welcome for a test sail Greetings
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Old 19-03-2008, 21:22   #131
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I would like to see a tiller instead of the wheel!
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Old 19-03-2008, 21:32   #132
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Tillers do have a more natural feel. I think that is especially so for those who learned to sail with a tiller. You certainly can feel the load on the rudder much more so
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Old 19-03-2008, 22:51   #133
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Tillers are hard to arrange on big cats

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I would like to see a tiller instead of the wheel!
Linking the rudders together is awkward without a wheel, on a good sized cruising cat with today's typical arrangement. Try drawing it, and I think you will find that the rudder shafts and tillers are in the way of the stern stairs and platform, and that the linkage is in the way of using davits for a dingy. Keeping the whole assembly clear of the waves leads to a pretty Rube Goldberg setup, etc.
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Old 20-03-2008, 01:36   #134
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Tillers do have a more natural feel. I think that is especially so for those who learned to sail with a tiller. You certainly can feel the load on the rudder much more so
If we where to use a tiller we would need to make a mechanical link and since we also want a high rear bridgedeck clearance that will not be possible. the nice thing is that cats this size are steered on the autopilot 98 % of the time so only when the cats is enetering a harbour or the occasional time when you want to had steer the wheel would be used.
The biggest disadvantage in using a tiller is that there is no forward visibility since the saloon is in the way.
The verdict : no tiller

Greetings and thank you
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Old 20-03-2008, 04:50   #135
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I guess I need to ride on one?

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If we where to use a tiller we would need to make a mechanical link and since we also want a high rear bridgedeck clearance that will not be possible. the nice thing is that cats this size are steered on the autopilot 98 % of the time so only when the cats is enetering a harbour or the occasional time when you want to had steer the wheel would be used.
The biggest disadvantage in using a tiller is that there is no forward visibility since the saloon is in the way.
The verdict : no tiller

Greetings and thank you
I could understand that , it does seem to be pretty high, what about making it trailerable? It would be nice to take it anywhere and how much does this baby weigh in as?
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