R27 Dinghy lift completed

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R27 Dinghy lift completed

Postby stwendl on Thu Aug 08, 2019 4:34 pm

Took me some time of work and procrastination but the lift is done, installed and working.

A video of retrieving a 14ft kaboat inflatable kayak is on youtube.

The dinghy is lifted with two winches, each with a double drum, until it cradles the which frame. Then the frame is lifted
vertically, and the then the support frame is lowered with two screw drive pistons into its horizontal position.

The operation takes about 7 minutes to lift. Lowering is a bit faster due to less load to overcome.

Could probably be simplified with less winches. But I had fun designing and building it. Critical delays were caused by a welder who led me down and produced less than desired quality. By the time this was discovered, it was too late and I had to recover from his work and get repairs done elsewhere.

The entire frame was designed and tested to hold about 100lbs. but the dingy itself weighs only 58 lbs without motor. The unique design lifts the boat and rotates it so not water gets accumulated inside the dinghy.

There will be some modifications done that will lower the mechanism closer to the roof by about 4-5 inches. Just requires a different joint between the lift and the top luggage rack on the R27. Also the rack needs to be better secured to the hand rails so they don't slip out of the T-Fittings. Currently they are just secured with setscrews that in my opinion are not safe for a pulling load on one side of the rack. I currently have added safety lines until that issue is addressed.

The video was also shout in suboptimal lighting but still shows the operation. The video can be found on youtube as R27 dinghy lift and can be viewed here: https://www.youtube.com/watch?v=mEEGwbyudYA&t=12s
Difference between RVers and Boaters:
RVers move until they reach water, Boaters move until they reach land.
Ranger Tug owners can do both :)
stwendl
 
Posts: 572
Joined: Tue Aug 11, 2015 8:13 pm
City: palo alto
State/Province: CA
Ranger/Cutwater Model: R-27
Vessel Name: Cataleya

Re: R27 Dinghy lift completed

Postby TugScout on Thu Aug 08, 2019 6:06 pm

WOW!! How cool is that!! Nice Job!

Mark
TugScout
 
Posts: 79
Joined: Sun Aug 12, 2018 10:41 pm
City: Stanwood
State/Province: WA
Ranger/Cutwater Model: R-27
Vessel Name: Amy Marie (2012)

Re: R27 Dinghy lift completed

Postby Matty on Thu Aug 08, 2019 7:13 pm

Very nice. Probably a boat builder on the west coast that might want to offer that as an option...
Any thoughts on maximum cruising speed? I imagine you just need to be sure it is secured on all 4 corners.
Matty
 
Posts: 206
Joined: Tue Feb 20, 2018 11:58 am
City: New Smyrna Beach
State/Province: FL
Ranger/Cutwater Model: R-27
Vessel Name: IN THE FALL (2018)

Re: R27 Dinghy lift completed

Postby bill46 on Fri Aug 09, 2019 10:52 am

Cool
Where did you get actuators?
Electric or hydraulic?
Strength
I want something to lower mast on my 31CB.
thanks'
bill46
 
Posts: 271
Joined: Wed Jan 13, 2016 2:24 pm
City: Palm Coast
State/Province: FL
Ranger/Cutwater Model: R-31 CB
Vessel Name: Radio Active

Re: R27 Dinghy lift completed

Postby knotflying on Sat Aug 10, 2019 6:38 am

Impressive job! Having a solar panel would probably make installation a bit more complex and when anchored one would have to lift the dingy off the panel to allow charging, but a very nice feature.
“What we call reality is merely an ILLUSION we create for learning and enjoyment….”
knotflying
 
Posts: 4477
Joined: Sun Jul 25, 2010 5:42 pm
City: Charlestown
State/Province: RI
Ranger/Cutwater Model: R-27
Non-Ranger Model: http://illusionsmikeandjess.blogspot.com/
Vessel Name: (2011) Illusions

Re: R27 Dinghy lift completed

Postby stwendl on Sat Aug 10, 2019 10:18 am

Matty wrote:Very nice. Probably a boat builder on the west coast that might want to offer that as an option...
Any thoughts on maximum cruising speed? I imagine you just need to be sure it is secured on all 4 corners.


It is secure at full cruising speed of 23 knots
Difference between RVers and Boaters:
RVers move until they reach water, Boaters move until they reach land.
Ranger Tug owners can do both :)
stwendl
 
Posts: 572
Joined: Tue Aug 11, 2015 8:13 pm
City: palo alto
State/Province: CA
Ranger/Cutwater Model: R-27
Vessel Name: Cataleya

Re: R27 Dinghy lift completed

Postby stwendl on Sat Aug 10, 2019 10:20 am

bill46 wrote:Cool
Where did you get actuators?
Electric or hydraulic?
Strength
I want something to lower mast on my 31CB.
thanks'



The electric actuators can push/pull up to 330 lbs and are used for solar panel positioning. Available at amazon:

https://www.amazon.com/gp/product/B00NM ... UTF8&psc=1
Difference between RVers and Boaters:
RVers move until they reach water, Boaters move until they reach land.
Ranger Tug owners can do both :)
stwendl
 
Posts: 572
Joined: Tue Aug 11, 2015 8:13 pm
City: palo alto
State/Province: CA
Ranger/Cutwater Model: R-27
Vessel Name: Cataleya

Re: R27 Dinghy lift completed

Postby stwendl on Sat Aug 10, 2019 10:22 am

knotflying wrote:Impressive job! Having a solar panel would probably make installation a bit more complex and when anchored one would have to lift the dingy off the panel to allow charging, but a very nice feature.


There is plenty of space left on the roof for solar panels that would not be shaded by the boat. I choose a portside deployment but the unit is reversible to stbd if need be
Difference between RVers and Boaters:
RVers move until they reach water, Boaters move until they reach land.
Ranger Tug owners can do both :)
stwendl
 
Posts: 572
Joined: Tue Aug 11, 2015 8:13 pm
City: palo alto
State/Province: CA
Ranger/Cutwater Model: R-27
Vessel Name: Cataleya

Re: R27 Dinghy lift completed

Postby jaredjensen on Thu Aug 15, 2019 11:23 am

The YouTube link says the video is unavailable. Any chance you could repost that? We're about to buy a R29 and would love to stow the dinghy up top to keep the swim step clear.
jaredjensen
 
Posts: 1
Joined: Thu Aug 15, 2019 10:37 am
City: Gig Harbor
State/Province: WA
Ranger/Cutwater Model: R-29 Classic

Re: R27 Dinghy lift completed

Postby stwendl on Thu Aug 15, 2019 12:31 pm

The lift was designed specifically for a r27 Dimension and for a particular inflatable Kajak to be loaded Center on the r27
Difference between RVers and Boaters:
RVers move until they reach water, Boaters move until they reach land.
Ranger Tug owners can do both :)
stwendl
 
Posts: 572
Joined: Tue Aug 11, 2015 8:13 pm
City: palo alto
State/Province: CA
Ranger/Cutwater Model: R-27
Vessel Name: Cataleya


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