Subject: Re: [harryproa] Re:: C60 revised drawings
From: "Rob Denney harryproa@gmail.com [harryproa]" <harryproa@yahoogroups.com.au>
Date: 4/13/2017, 9:44 PM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 



On Thu, Apr 13, 2017 at 10:01 PM, lucjdekeyser@telenet.be [harryproa] <harryproa@yahoogroups.com.au> wrote:
 

Excellent points.

There are so many features right in this design that bringing up my comments is a bit unfair.

​Not at all, if you guys see anything that can be improved, let us know.​

  •       The salon roof is more realistic but I fail to see how this can be the result of intelligent infusion without additional mold?
​It is all done on a flat table, but there is a small amount of secondary laminating.  It can be done without, but is more work at this stage,.  This is probably version # fifty something, yet still a work in progress.  As Rob Riley says, Steinar's attention to detail is staggering.  I had not realised quite how focussed he is until i sat and watched him work.  

  •         I see no structural nor ease of building reason for not having the front face of the beams 45 degrees down to deflect waves downwards like the latest versions of the Farrier tri beams do
Easy enough to alter, but waves hitting here will be a very rare event.  ​

  •         Saloon deck clearance was lowered to prevent the step to the galley in the previous version, right?
​Yes.  Clearance next to the ww hull can be a lot lower than the lw one as it only sees waves when motoring straight into large, steep waves.  In these circumstances,  the motion will be such that it would be better to hit the waves at an angle anyway.   It is solid enough that wave slap won't be a structural issue​

  •         I understand why the two masts are at that distance from each other. Would there be a way to configure the sails such that one could profit from a slot effect between the two and have them approximate an articulated single wing when frontal apparent wind? Without moving the masts this would mean sails with lower aspect ratio … thus lower mast … thus lower light wind performance … ?   Moving the masts inward of course cuts up the interior volume.
​Could do.    In my experience, it is very hard to get unstayed schooner masts to interact effectively as the top lays off more than the bottom.  Better to put them far enough apart, with high enough aspect ratios that the interference is minimised.  ​


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Posted by: Rob Denney <harryproa@gmail.com>
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