Subject: Re: [harryproa] Bucket List harry forum
From: "Rob Denney harryproa@gmail.com [harryproa]" <harryproa@yahoogroups.com.au>
Date: 10/19/2014, 1:06 AM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au

 

Ron,
Come over for a sail in a few months and check it out.   

Larry,
All good ideas, which were considered on this boat and others.  Bucket List should never capsize, if the fuse and/or common sense are used.  I don't want it to be so easy to right that sensible limits are ignored.  

A sideways capsize is pretty slow and there is usually plenty of warning and time to do something about it.  However, pitchpoling can be quite sudden.  It would be catastrophic if someone landed in the water during a pitchpole, the boat self righted and sailed away.    Better to use the fuse or reduce sail.   Or drop all sail, pull up the rudders and go below for a snooze.  

David,
Canting the rig to ww is a performance enhancer, but as the hull lifts, the sail force increases, which speeds up the heeling, making it more likely to capsize.  
The drag from the mast does mean that the capsized boat floats with the mast pointing upwind.  The windage of the tramp, beams and ww hull deck all help with the righting.  As does wave action.
A diagonal capsize to windward is possible, but pretty unlikely.  Ditto for a capsize directly to windward.    It would be impossible to right the boat without assistance in either scenario.  

On Sat, Oct 18, 2014 at 4:02 PM, Larry Forgy larryforgy@gmail.com [harryproa] <harryproa@yahoogroups.com.au> wrote:
 

Rob,

This is very nice.  It seems like a natural step towards popularizing proas.  One of the features I like very much is the potential for self righting, which I think could be a major selling point for the boats.

The thing is, I have been in a few difficult and potentially catastrophic situations, and like everyone else, quickly became exhausted and overwhelmed by the forces involved.  In the middle of rough conditions, it seems to me that self righting would be a lot more successful if it does not require active inputs at the most stressful time.  So, I was wondering how difficult it would be to be able to cant the mast to leeward about 10 to 15 degrees, so that when the mast hits the water, the weight of the windward hull would still exert a righting force.

This canting could be built in and permanent, but then of course the rig would be less efficient and underpowered in light airs.  Or it could be done when the wind picks up, sort of as part of the reefing process.  To be adjustable, it could be accomplished in two ways (at least).  First, the mast step could be adjustable, probably by hydraulic means. This would probably be pretty heavy and expensive.  Secondly, the connecting beams between the hulls might have some 10-15 degree pivot built into them, either in the sockets or by curving the beams themselves.

You have probably thought of all this already, and these suggestions are probably very impractical, but perhaps can start some discussion on improved self righting.

Regards,
Larry Forgy


On Fri, Oct 17, 2014 at 4:13 AM, Rob Denney harryproa@gmail.com [harryproa] <harryproa@yahoogroups.com.au> wrote:
 


On Fri, Oct 17, 2014 at 2:13 PM, Ron Badley ronbadley@eastlink.ca [harryproa] <harryproa@yahoogroups.com.au> wrote:
Hey Rob,

Boat looks great. Wouldn't change a thing. Perfect tool for the job. Just might have to sell the Newick and get one....

RonB.


On 2014-10-16, at 4:53 PM, Rob Denney harryproa@gmail.com [harryproa] wrote:

>
> G'day,
> Just completed the video and updated the harryproa web page for the latest project, which is a 12m/40' version of Solitarry for shorthanded inshore and offshore racing charter.
>
> This is a new niche, only possible with a harry!   It is rightable without outside assistance and so simple that we can offer to pay for any non collision breakages.  It is also low cost.  Charter fees are $500/day, the boat can be purchased for $50,000, ready to sail.
>
> I am building the windward hull (nearly finished),  the rudders and their mountings to fiddle with the build methods.  The hulls are infused in flat panel moulds.  No grinding or sanding involved.  No fairing, except where i stuffed up.
> 12 hours to build the half mould, then 10 hours from empty mould to sucking resin with the resultant mouldings ready to glue together and paint.   The rudders will be built from flat panels.
>
> The beams, mast and lee hull will be built by Etamax, hopefully before Xmas.
>
> Another thing that sets this apart from most boat oriented ventures is that it is potentially a money maker.  Consequently shares in the boat (and the fleet, if everything works out) are available.  The return will be the same percentage of the nett profit as the investment was of the cost.  ie, for $10,000, you get 20% of the profit, (including sponsorship, if there is any) and as much as you want of the non booked sailing time.   Probably not as spectacular as buying Apple shares, but much more fun.
>
> Your comments on the boat, the concept and the presentation are welcome, as always.
>
> This may get exposure on numerous forums, many of which I don't follow.  If you post it (after the web page is back on line) or see it on any forums that I am not on, please let me know so I can answer questions and also as evidence for sponsors.
>
> Bucket List will live outside my place so will be available for test sails for anyone interested in harrys.
>
> Many thanks to Steinar (Norwegian harry builder) for the artwork, video and web page.  Steinar has taken over the harry styling, so future boats will look as good as his, while still being as low cost and  easy to build as possible.
>
> https://www.youtube.com/watch?v=ttXu3pRTzs8
> regards,
>
> rob
>
>



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