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07-14-2015, 05:34 PM
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#1
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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Radical Manatee Transom door mod
A swim platform might be a great design, but how easy is it to access. Access might be great, but maybe the platform sucks.
Anyway, my own boat is not an easy boat to fit with a platform. The original tailgate door on the transom is a decent idea, but access isn't so easy. Ladders "work", but that's about all you can say for us seniors. With high bulwerks and skinny-ass steps, climbing back into the boat can be painful. We realized that if water access were easy, our usage of the boat would probably triple. After making sure we had a really substantial platform, we played with the ideas of making the access just as convenient. The tailgate style of transom door didn't work with the plan. It was risky to do something radical, but we had to make sure that whatever we ended up with didn't alter the way the original transom design absorbed stresses. Additionally, the alteration had to ease entry and exit to and from the boat whether on the water or docking. Lastly, it had to become serve as the recovery area for our MOB plan. After a lot of thought, this is the best we could come up with.
The transom tailgate was removed and rebuilt. I couldn't find a band saw with a large enough throat to make the whole cut in one pass, so I built a jig around it so a saw could be utilized to make a 45 degree vertical (slightly helical) cut. This all sounds very smart, but the cut was made with a saws-all and didn't come out perfect. There was plenty of extra work created to smooth-out the mistakes. Each half of the door was fitted in the position of the original door, then hinged to lift first, then pivot 180 degrees inward. This takes some space from the veranda, but we were surprised how little the swing of each door needs. It only slightly altered the original position of the veranda furniture. Access to and from the swim platform is a dream, as if it is now just an extension of the veranda. Eight 3/8" stainless plate brackets make it feel as though it is part of the veranda floor. It fits perfectly with our MOB plan and has changed the way we will use and think about our boat. Dinghy access has also been completely facilitated, as has access to the boat from floating docks. We still need to build a wide-step ladder and finalize a position for it. Each door now has a hatch compartment built in to store masks, fins, or whatever. The way the doors fit together in the original wedged position direct the stresses exactly as before in the case of a direct hit on the transom. Although I'll probably add another hinge to each door, they play little part in keeping the doors in place and swing the 35 lb. doors easily. Photos to follow in the next post.
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Larry
"When life gets hard, eat marshmallows”.
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07-14-2015, 06:37 PM
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#2
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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Here's the first six photos with text in the photo. Click on photo to enlarge.
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Larry
"When life gets hard, eat marshmallows”.
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07-14-2015, 07:48 PM
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#3
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TF Site Team
City: Paris,TN
Vessel Name: Slo-Poke
Vessel Model: Jorgensen custom 44
Join Date: Jan 2013
Posts: 3,746
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Great idea . Beautifully executed as always . Larry you are da man .
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Marty
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07-14-2015, 07:49 PM
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#4
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Scraping Paint
City: -
Join Date: Oct 2007
Posts: 13,745
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Very clever and smart design. The next step is to change your avatar photo....
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07-14-2015, 07:52 PM
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#5
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Guru
City: Sarasota,FL/Thomasville,GA
Vessel Name: Steppin Stone IV
Vessel Model: Marine Trader Kelly Trawler 46
Join Date: Jul 2013
Posts: 1,815
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Wow I love it run it over to Marina Jack to show it off
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07-14-2015, 08:32 PM
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#6
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 11,628
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Larry, we talked about this at Indian Town last fall. They were supposed to be pocket doors, wtf?
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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07-14-2015, 09:26 PM
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#7
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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Quote:
Originally Posted by O C Diver
Larry, we talked about this at Indian Town last fall. They were supposed to be pocket doors, wtf?
Ted
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Can't figure it, Ted. It worked fine on Photoshop, but the real thing left the transom too weak. WTF?
__________________
Larry
"When life gets hard, eat marshmallows”.
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07-14-2015, 09:55 PM
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#8
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Guru
City: Fort Myers, FL... Summers in the Great Lakes
Vessel Name: Slow Hand
Vessel Model: Cherubini Independence 45
Join Date: Dec 2010
Posts: 11,628
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Quote:
Originally Posted by healhustler
Can't figure it, Ted. It worked fine on Photoshop, but the real thing left the transom too weak. WTF?
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WTF = what the f*ck.
Ted
__________________
Blog: mvslowhand.com
I'm tired of fast moves, I've got a slow groove, on my mind.....
I want to spend some time, Not come and go in a heated rush.....
"Slow Hand" by The Pointer Sisters
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07-14-2015, 09:58 PM
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#9
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TF Site Team
City: California Delta
Vessel Name: FlyWright
Vessel Model: 1977 Marshall Californian 34 LRC
Join Date: Apr 2008
Posts: 13,704
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That's a great mod, HH! Looks like you thought it all out well in advance and planned well for the big cut. But starting that big cut still must have been nerve wracking.
Very nice work!!
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07-15-2015, 08:38 AM
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#10
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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Quote:
Originally Posted by FlyWright
That's a great mod, HH! Looks like you thought it all out well in advance and planned well for the big cut. But starting that big cut still must have been nerve wracking.
Very nice work!!
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Exactly, and like I said, the cut wasn't without error. Hours and hours and hours of adjusting. While I was messing about in the archives, I came across this photo of Kassie, one of the best conditioned Manatees out there. For their solution, they made two separate platforms on either side of the tailgate so that when the tailgate was let down, there was a level area on both sides, voila...a swim platform. Trouble is, there are still the tailgate retainer cables to step over, and the platform ends up very high above the water. I don't know about you, but getting older, I don't need something else to trip over. Not much improvement in boat or water access over the tailgate alone.
__________________
Larry
"When life gets hard, eat marshmallows”.
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07-15-2015, 08:41 AM
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#11
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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To continue, here are some shots and descriptions after the cut. The top rail cap was cut with a table saw, and the rest was done with a saws-all. There was no progress until I actually hinged and mounted the doors as they would be, and then cut the 8 X 24 holes for separate access hatches in each door. Finally with the easy access to the inside, the glassing could be done from the inside while the doors were in the closed position, providing for a pretty good roughed-out fit. We used wax paper and waxed formica as a barrier to keep from glassing the doors together, but there were still a few places that adhered, and we had to saw the doors loose again with a hacksaw blade.
__________________
Larry
"When life gets hard, eat marshmallows”.
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07-15-2015, 08:53 AM
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#12
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Guru
City: LI or Fla
Join Date: Jul 2013
Posts: 1,148
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Great project, thanks for sharing!
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07-15-2015, 09:02 AM
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#13
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TF Site Team
City: Jacksonville
Join Date: Nov 2008
Posts: 10,952
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What a great modification.
Nothing like taking a sawsall to you boat.  You're a brave man.
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07-15-2015, 09:21 AM
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#14
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Guru
City: Hailing Port: Charleston, SC
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 8,276
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07-15-2015, 09:33 AM
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#15
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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Quote:
Originally Posted by Moonstruck
Don't forget about cruising! 
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Cruising?! What's that? Boats are for working and slaving and spending money on.
__________________
Larry
"When life gets hard, eat marshmallows”.
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07-15-2015, 09:51 AM
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#16
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Guru
City: Seattle
Join Date: Apr 2012
Posts: 1,142
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Masterful job, Larry. Reality really can be better than Photoshop!
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07-15-2015, 09:53 AM
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#17
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Guru
City: Hailing Port: Charleston, SC
Vessel Name: Moonstruck
Vessel Model: Sabre 42 Hardtop Express
Join Date: Nov 2008
Posts: 8,276
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Quote:
Originally Posted by healhustler
Cruising?! What's that? Boats are for working and slaving and spending money on.
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Oh yeah, I've been reading boating ads, and almost forgot a boat's real purpose.
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07-15-2015, 12:18 PM
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#18
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Guru
City: Beaufort, NC USA
Vessel Name: Sylphide
Vessel Model: Kingston Aluminum Yacht 44' Custom
Join Date: Aug 2014
Posts: 2,210
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Quote:
Originally Posted by Moonstruck
Oh yeah, I've been reading boating ads, and almost forgot a boat's real purpose. 
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That's Manatee, not porpoise.
Very nicely done, Larry. That tailgate setup was a bit goofy.
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07-15-2015, 05:55 PM
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#19
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Guru
City: Longboat Key, FL
Vessel Name: Bucky
Vessel Model: Krogen Manatee 36 North Sea
Join Date: Oct 2009
Posts: 5,182
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To continue, as mentioned, the attempt to glass the open ends really failed miserably. There was no choice but to mount and hinge the door halves in place to see where and how to add or subtract glass. In the mounting process, there were other issues to resolve. Here's how we addressed them. Click to enlarge.
__________________
Larry
"When life gets hard, eat marshmallows”.
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07-15-2015, 08:42 PM
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#20
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Guru
City: Pahrump, NV
Vessel Name: Pairadice
Vessel Model: Sold Selene 47
Join Date: Jul 2014
Posts: 1,943
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Pretty Spiffaly, nice improvement. But where is the shower gonna go?
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