Ha, hows having dreams come true feel Mike?

  I'll let you know when it happens.   ;-)

  Many apologies for the delay.  November through March is normally my busy season with software development, and this year I inherited two additional projects.  Email, group chats, and anything of the sort has taken a back seat.  Now that things have eased up, I have time to ponder fast-and-light multihulls.

  So, after five months of time to ponder, I've flip-flopped several times before coming back to my original position.

  My personal goal: 

    - A permanent retractable motor sled underneath the ww hull, with the motor itself being aft of the cockpit when retracted
    - A simple winch, crank, or even set of blocks and a cleat, to raise/lower it
    - The motor is accessible for basic maintenance from the cockpit
    - Tramps between the cockpit and the lw hull


  Reasoning:

    - This is the lightest, fastest, cheapest way to go
    - I'll daysail 95% of the time without a dinghy on board
    - I'd like to be able to expand/collapse on the water without changing motor controls or moving the tender
    - There's more under-cockpit clearance this way than if we try to cram the tender underneath
    - And drive a single unit onto a bunk/multihull type trailer at any launch ramp

  The stock Ex40 design is truly brilliant, and other than the sled, I'm not sure I'd change a thing.

  Fortunately, nothing has to change other than building in mounts for either option.

   Add the permanent tender/sled if you'll use it, go with tramps or a roll-out flat deck if not.

  Which means that now much of my pondering will go back to ways to implement boat electronics, chartplotters, wind meters, and nav lights on a bidirectional boat.

  Thankfully none of that really affects the boat design.

  So now I have to fill the gap between today, when my dreams have been answered with a boat design, and the future, when this design shows up in my life.

  Which, while inconvenient, is still neat.  No other boat meets my criteria for speed and safety, so pinning down the general design is in some ways a miraculous first step.

        - Mike

 

Did someone sneak a disassembled pic onto the Ex40 page?

| The T40 is 4.7m/15'5" long x 1.8m/5'10" wide. As drawn, the boat would telescope to 4.35m/14'3". The tender would sit under the telescoped bridge deck clear of the water is it was 500mm/20" deep.

And MFW! there is a telescoping drawing? Where would one find this? I know there is a todo list, but just attach it to the message you big tease. 14'3"?

| Access to the motor would require a hatch in the cockpit floor.

When collapsed? That's gonna be a head down bitch, right? Or is the hatch big enough to climb down and sit in the tender?

| Assuming it was wet up correctly, a single line would winch the boat in and out, with the tender locked in place. It could then be lifted lowered as required. Or, the boat could be telescoped with the stern down, even while motoring.

Ha, hows having dreams come true feel Mike?

| The above assumes internal (ww inside lw) telescoping which will mean some changes to the deck layout. Over/under telescoping would require a major redraw, resulting in a somewhat different boat, I think.

And you got the sexyier beams too Mike.

| I'm not sure of this answers all the questions asked as the post has disappeared from my email and is not on the Groups page. Please ask again if I have missed anything.

Missing message is here https://au.groups.yahoo.com/neo/groups/harryproa/conversations/messages/13886

Everything answered I think. 20" beam clearance was the number right?
Dies that seem low?

| The Chat group move is also on the top of the 'to do' list. ;-)

Looking forward to it.

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Posted by: Mike Crawford <mcrawf@nuomo.com>

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