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 21 
 on: March 28, 2015, 08:52:16 PM 
Started by Dave B - Last post by pfithian
I see your motor is mounted at the highest position.  I think that is a good starting point, but it may still be too low.

When you are on plane, the A/V plate should be completely out of the water for the most efficient operation.  I couldn't achieve that until I mounted the motor on an SB-6 bracket.  You can see it here:  https://www.youtube.com/watch?v=12UpMxmUabg

And here:  https://www.youtube.com/watch?v=q-LTIByHwWU

If I were to build another Jumbo, I'd make the transom height at least 26.5".

 22 
 on: March 28, 2015, 08:44:00 PM 
Started by BobC - Last post by pfithian
But also the Tolman bottom beam really needs to be wider

One way to widen the boat and still use standard plywood is to use the Euro transom concept. 

It allows for a full 96" of width at the 25" (or as I suggest, 26.5") height from the bottom of the keel to the edge where the motor is mounted.  The rest of the width is built up by the shelf extensions that go from there to the gunwale.

See attached that I posted on another thread a few years ago.

 23 
 on: March 28, 2015, 07:16:29 PM 
Started by kchace - Last post by kchace
That definitely makes us pretty close.


 24 
 on: March 28, 2015, 05:50:07 PM 
Started by BobC - Last post by Oyster
couple lifting shackles built in, back under the chain hoist raise it then pull out and lower to dolly?  That was how I did my old pickup camper.  The hoist was on wheels and movable inside or out.
Well I may be confused. But I thought that he was needing to remove the top both after building and getting the boat out of his shed, and when storing it away after use until he can get an exterior cover built.  But of course you are correct if he can rig an easy lifting mechanism somewhere outside.

 25 
 on: March 28, 2015, 05:25:55 PM 
Started by elkhunter338 - Last post by gdwamsley
Super cool when you open the bottom up.  Satisfying when the dimensions all work out too

 26 
 on: March 28, 2015, 04:38:15 PM 
Started by elkhunter338 - Last post by cgrfish
Lookin good!  Pretty cool to unfold the bottoms and all of a sudden you can see your boat coming to life! 

 27 
 on: March 28, 2015, 04:12:14 PM 
Started by elkhunter338 - Last post by elkhunter338
Made progress today, unfolded the bottom panels and things looks perfect.  Set the 40" control point and the control point at the scarf.  The 55 deg. angle was spot on.  My dad used his smart phone on the straight edge and it said 55 deg.  I also cut a piece of plywood at the correct angle on the chop saw and it was flush on the floor to confirm.

 28 
 on: March 28, 2015, 04:06:39 PM 
Started by BobC - Last post by g8trwood
couple lifting shackles built in, back under the chain hoist raise it then pull out and lower to dolly?  That was how I did my old pickup camper.  The hoist was on wheels and movable inside or out.

 29 
 on: March 28, 2015, 03:51:35 PM 
Started by kchace - Last post by mjggjm12
Ken I just noticed we live pretty close to one another, I live in Milford.

 30 
 on: March 28, 2015, 03:50:29 PM 
Started by david.nolan.940 - Last post by luk diver
 "Sealed" decks on our 2003 were bone dry when I put a boroscope into the drain-plugs last year. As someone asked: fresh or salt-water? Deck ports with O-rings are a 'on going maintainance' thing from our experience of the one port over the fuel tank compartment. b & b

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