I have seen a very nice set up with a fork arrangement on a bullbar using manual winding. I was planning on using such a set up for unloading the lw hull from the trailer and attaching it to the beams.
--- In harryproa@yahoogroups.com.au, Dennis Cox <dec720@...> wrote:
>
> Hey Mike,
>
> Junk in the trunk and trailering - Me too!  That parts looking ugly!    I'm sure
> some kind of power device will be involved.  Hand truck looking thingy with
> hydraulics... I'd imagine.
>
> Sheeting - When drafting it up I had so much volume above head height over the
> hull flooring, it seemed a shame to let it go to waste.  That's where the "crows
> nest" was born.  Sailing in the sunshine with a full 360 degree view.  Plan on
> putting a helm up there and since its still windward of the masts, I could sheet
> from there.  For sheeting from the helm down on the bridge deck, I've not routed
> the sheets.  Its a TBD. 
>
>
> Dennis
>
>  
>
> ________________________________
> From: Michael Gehl <mike@...>
> To: harryproa@yahoogroups.com.au
> Sent: Tue, July 27, 2010 1:39:43 PM
> Subject: Re: [harryproa] 60' Trailerable Proa
>
>  
> Dennis - comments inline...
>
> On Jul 27, 2010, at 8:16 AM, Dennis Cox wrote:
>
>
> >
> >
> >Hey Mike,
> >
> >Thank you for taking the time to help me out.  I value anyone's actual
> >experience over my rationalizations.  I've never seen a Proa in the flesh, much
> >less sailed one.  Here are some of my rationalizations. .. please point out
> >anything that is wrong.
> I didn't mean to imply any experience whatsoever with a proa. Plenty of cat
> time, though, and as we all know most cats are no more than a misshapen proa
> with a mast halfway between a harry and Atlantic position!
>
>
>
> >
> >In my brief, I state two configurations. .. racing and cruising.  The idea
> >being... if I was trailering to a race, I would unload the "cargo" in the lee
> >hull.  Similarly, if I was cruising around and "found" a race to play in, and if
> >I sized up the competition, I could unload the "cargo" at the dock and go have
> >some fun.  That leeward cargo includes, most of the potable water, all fuel,
> >portable generator(s) , some of the battery bank.  I'm looking at electric
> >motors so the battery weight is sizable.  It also includes toys like kayaks,
> >bikes and general "junk" that any couple gathers in the attic.
> With the "junk in the trunk" I'd be curious how that gets loaded on the
> trailer...
>
>
>
> >
> >In race mode, we'd be on top of it all the time so getting caught aback
> >shouldn't be an issue.  In fact, in light airs (in a race) I'd plan on running
> >as a Pacific and freek out the competition by tacking and/or shunting at will. 
> >In Pacific "mode" as you suggest, I'd more readily fly the long hull (old lee
> >hull) and remove its surface drag.
> In race mode it'd probably be better to get the windward hull up in the air, as
> the longer hull would be more optimal at higher speeds. Of course that assumes
> there would be wind to support higher speeds. Have a hunch lifting that hull may
> be easier with the harry config, with less stuff in the ww hull.
>
>
>
> >
> >When running conservative. .. in cruise mode, the leeward righting moment is
> >170,000 ft-lbs.  To windward, its 57,000 ft-lbs (33% of leeward).  So I would
> >have had to be running pretty hard (more than 33%) before the shift to be an
> >issue.  Also, its my understanding, that the EasyRig weather vanes in an aback
> >situation.
> It's obvious you've given this some serious thought. How do you sheet the sails
> on the Atlantic version?
>
>
>
> >
> >Although I have not decided, I am also looking into doing wings instead of an
> >EasyRig.  In that case, they will not use sheets, but will have attached rudders
> >controlling their angle of attack.  They should wheather vane and eliminate any
> >possiblity of going aback.
> Now there's a solution!
>
>
>
> >
> >I am concerned that I'm missing something fundamental.  Besides the possible
> >lighter weight of the leeward hull, is there anything about the sail placement
> >(HarryProa vs Atlantic) that makes aback more sensative on an Atlantic?
> My main concern was over the trippiness of the windward-mounted boards, and a
> weird hunch that somehow a sail in line with the roll center makes a better
> lever arm. Statics class was too far in the swirling mists of time   to summon
> up useful memories...
>
> Looks like a fun project. May you have great success - and keep posting!
>
> Mike
>