EX40 LIGHT
The ideal design for ease of trailering might be to:
- Keep the Ex40 windward and leeward hulls,
- But skip the sunken cockpit and integrated tender, and instead
- Go with the open deck and tramps seen on the earlier Ex40F,
- With a motor on a sled under the windward hull, and
- A removable or flip-up toybox next to the leeward hull.
I don't /want/ to skip the beautiful cockpit, or the integrated
tender, because they are extraordinary solutions for a 40' boat
under 1,800 pounds, plus the tender solution is so elegant that it's
painful to think about not implementing it.
Alas, I'm so focused on the ease of getting the boat in and out of
the water at a crowded boat ramp that I don't see the tender working
out -- I want to be able to just drive onto a single trailer and
then haul the boat over the the prep area to deal with the masts.
We'd use the tender so infrequently (once every few years?) that
simplifying the main boat and going with an inflatable tender with a
roll-up floor makes more sense than fiddling with the integrated
tender.
After switching over to trampolines, the next tasks are to figure
out the toybox, motor, and winches.
The toybox could be a slender 2' wide box along the leeward hull
that could either be removed and ratchet-strapped to the leeward
hull between the masts, or alternately, hinged to the leeward hull
and flipped upside down on top of it between the masts. Though if
flipping, such as for a marina, it would have to have an open (or
open-able) top and bottom section near the center to allow access to
the leeward hull hatches.
If the sunken cockpit could be worked into that scheme, so much
the better, but I'm not sure I see that happening for marinas. It
could be lifted out for trailering, but I'd want it to stay in place
for marinas, and I think that might be asking too much in terms of
getting down to 14' and still having easy access to both hulls.
The motor could then be on a hinged sled under the main cockpit,
being just aft of the aft beam when fully lifted, so:
- The boat can easily be collapsed on the water for trailering
or marinas
- With a single set of fixed controls
- Without having to disconnect or move controls or a tender
- The motor won't interfere with the bunks, toybox, rudders,
tillers, or tiller extensions
- And it will still be relatively near the center of the boat.
Winches then either get moved to the beams, or possibly to a
transverse beam that pins into place when on the water, but gets
unpinned and lifted out and strapped to the now-flipped toybox for
trailering.
And maybe we also save 200 pounds in the process, keeping the
Bruce number at or above 2 when my wife and I are on board.
- Mike
'.'
eruttan@yahoo.com [harryproa] wrote
on 10/25/2019 8:56 PM:
Looking at the rendered Ex40.
If we imagine the beam is 20'. Then splitting the beam in half
is 10', which is pretty much the limit of the trailerable ww
cabin width. My guess is the 10' split line is at the lee edge
of the ww outside cabin seats.
So, probably the 12' trailerable could just reuse the Ex40
cabin.
The problem is the bridge deck. Or, more specifically, the helm
station, winch's, and toybox.
The walkthrough rendering of the Ex40 seems to have forgotten
the toybox/anchor system. To my eyes it looks hollow under the
winches. Rob has said Steinar is trying to heat his shed to get
some infusions done. I guess that is a race against the season,
as he is north of the Arctic circle, I think. So, he's busy for
a few more weeks, and our good thoughts go out to him. He is,
after all, doing a most sacred thing, building a boat.
That said, does the toy box/anchor high enough stressed to need
to be solid between the beams? Or can it drop in or flip down?
Or does it need to be solid to the lee beams and it needs to be
part of the lee cabin ~12'?
If the spacing is tight, perhaps do like the C60, no cabin
attached seating, and the box is the seating?
http://harryproa.com/wp-content/uploads/2017/12/C60-006.jpg